GLENCORE INTERNATIONAL AG

SEC source: 0001104659-26-023527 · tm268019-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,184,755

F1 · ownership.direct: The Common Stock reported on Line 1 of Table I is held directly by Glencore International AG. Glencore International AG is wholly-owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-25-111519 · tm2531156-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 4,948,591 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock was acquired on July 8, 2008 and has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock was acquired on July 8, 2008 and has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock was acquired on July 8, 2008 and has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock was acquired on July 8, 2008 and has no expiration date.

F1 · derivative.underlying_shares: Represents shares of Common Stock acquired upon the automatic conversion of 49,485.91 shares of Series A Convertible Preferred Stock upon the consummation of the transaction reported in Line 1 of Table 1.

F3 · ownership.nature: The shares of Common Stock reported in Line 2 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 1 of Table I is held directly by Glencore International AG. Glencore International AG is wholly-owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-25-111519 · tm2531156-1_4seq1.xml · nonDerivative · entry 2

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 17,505,947

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of Common Stock acquired upon the automatic conversion of 49,485.91 shares of Series A Convertible Preferred Stock upon the consummation of the transaction reported in Line 1 of Table 1.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock was acquired on July 8, 2008 and has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 2 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 1 of Table I is held directly by Glencore International AG. Glencore International AG is wholly-owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-25-111519 · tm2531156-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,500,000

SEC source: 0001104659-25-095789 · tm2527717-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 49,485.91

Underlying: Common Stock · 2,848 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-25-095789 · tm2527717-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,557,356

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 28.48 shares of Series A Convertible Preferred Stock on September 30, 2025.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001140361-25-029897 · form4.xml · derivative · entry 1

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F2 · security: The Issuer previously issued to Glencore Canada an amended and restated convertible note for $124,059,131.32 in original principal amount as of date thereof ("A&R Note 1"). The principal and accrued interest owing under A&R Note 1 may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price per share of $2.33 (as of August 7, 2025), subject to further adjustments.

F3 · security: A&R Note 1 matures on December 9, 2029 (or earlier upon the acceleration or redemption thereof, in each case in accordance with the terms of A&R Note 1). Interest on the note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis, and is based on the secured overnight financing rate plus 6% per year if interest is paid by PIK. Mandatory redemption will be required in the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to proration).

F4 · security: In connection with any optional or mandatory redemption, and provided that Glencore Canada has not elected to convert A&R Note 1 into Common Shares, following receipt of notice of such redemption the Issuer is required to issue a number of warrants to Glencore Canada that entitle it to acquire a number of Common Shares equal to the principal amount of the applicable Notes being redeemed divided by the then applicable conversion price and expiring on the maturity of A&R Note 1.

F2 · derivative.exercise_price: The Issuer previously issued to Glencore Canada an amended and restated convertible note for $124,059,131.32 in original principal amount as of date thereof ("A&R Note 1"). The principal and accrued interest owing under A&R Note 1 may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price per share of $2.33 (as of August 7, 2025), subject to further adjustments.

F5 · reported_value: Pursuant to an order of the Ontario Superior Court of Justice (Commercial List) dated August 1, 2025, which was recognized by an order of the United States Bankruptcy Court for the Southern District of New York dated August 4, 2025 in the Chapter 15 Proceeding, among other things, the Equity and Asset Purchase Agreement, dated May 14, 2025 and as amended (the "EAPA"), among Glencore Canada, the Issuer and the other persons listed on Schedule I thereto (the "Sellers"), was approved. In accordance with the EAPA, Glencore Canada effected a credit bid (the "Credit Bid") pursuant to which the Sellers sold, transferred and assigned to Glencore Canada, and Glencore Canada acquired and assumed from the Sellers, the Transferred Assets (as defined in the EAPA), the Transferred Equity Interests (as defined in the EAPA) and the Assumed Liabilities (as defined in the EAPA) (collectively, the "EAPA Transaction").

F6 · reported_value: (continued from footnote 5) In connection therewith, on August 7, 2025, the Issuer, Glencore Canada, GIAG, and other subsidiaries of the Issuer entered into the Collateral Release and Note Direction Agreement, pursuant to which and as contemplated by the EAPA, the EAPA Transaction and the Credit Bid, Glencore Canada Corporation directed the Company to, among other things, reduce the principal amount of A&R Note 1 by $30,867,124 (based on the $2.33 conversion price, convertible up to 13,247,693 Common Shares).

F5 · price: Pursuant to an order of the Ontario Superior Court of Justice (Commercial List) dated August 1, 2025, which was recognized by an order of the United States Bankruptcy Court for the Southern District of New York dated August 4, 2025 in the Chapter 15 Proceeding, among other things, the Equity and Asset Purchase Agreement, dated May 14, 2025 and as amended (the "EAPA"), among Glencore Canada, the Issuer and the other persons listed on Schedule I thereto (the "Sellers"), was approved. In accordance with the EAPA, Glencore Canada effected a credit bid (the "Credit Bid") pursuant to which the Sellers sold, transferred and assigned to Glencore Canada, and Glencore Canada acquired and assumed from the Sellers, the Transferred Assets (as defined in the EAPA), the Transferred Equity Interests (as defined in the EAPA) and the Assumed Liabilities (as defined in the EAPA) (collectively, the "EAPA Transaction").

F6 · price: (continued from footnote 5) In connection therewith, on August 7, 2025, the Issuer, Glencore Canada, GIAG, and other subsidiaries of the Issuer entered into the Collateral Release and Note Direction Agreement, pursuant to which and as contemplated by the EAPA, the EAPA Transaction and the Credit Bid, Glencore Canada Corporation directed the Company to, among other things, reduce the principal amount of A&R Note 1 by $30,867,124 (based on the $2.33 conversion price, convertible up to 13,247,693 Common Shares).

F2 · derivative.exercise_date: The Issuer previously issued to Glencore Canada an amended and restated convertible note for $124,059,131.32 in original principal amount as of date thereof ("A&R Note 1"). The principal and accrued interest owing under A&R Note 1 may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price per share of $2.33 (as of August 7, 2025), subject to further adjustments.

F3 · derivative.expiration_date: A&R Note 1 matures on December 9, 2029 (or earlier upon the acceleration or redemption thereof, in each case in accordance with the terms of A&R Note 1). Interest on the note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis, and is based on the secured overnight financing rate plus 6% per year if interest is paid by PIK. Mandatory redemption will be required in the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to proration).

F5 · derivative.underlying_shares: Pursuant to an order of the Ontario Superior Court of Justice (Commercial List) dated August 1, 2025, which was recognized by an order of the United States Bankruptcy Court for the Southern District of New York dated August 4, 2025 in the Chapter 15 Proceeding, among other things, the Equity and Asset Purchase Agreement, dated May 14, 2025 and as amended (the "EAPA"), among Glencore Canada, the Issuer and the other persons listed on Schedule I thereto (the "Sellers"), was approved. In accordance with the EAPA, Glencore Canada effected a credit bid (the "Credit Bid") pursuant to which the Sellers sold, transferred and assigned to Glencore Canada, and Glencore Canada acquired and assumed from the Sellers, the Transferred Assets (as defined in the EAPA), the Transferred Equity Interests (as defined in the EAPA) and the Assumed Liabilities (as defined in the EAPA) (collectively, the "EAPA Transaction").

F6 · derivative.underlying_shares: (continued from footnote 5) In connection therewith, on August 7, 2025, the Issuer, Glencore Canada, GIAG, and other subsidiaries of the Issuer entered into the Collateral Release and Note Direction Agreement, pursuant to which and as contemplated by the EAPA, the EAPA Transaction and the Credit Bid, Glencore Canada Corporation directed the Company to, among other things, reduce the principal amount of A&R Note 1 by $30,867,124 (based on the $2.33 conversion price, convertible up to 13,247,693 Common Shares).

F7 · valueOwnedAfter: Reflects the outstanding principal amount of A&R Note 1, exclusive of accrued but unpaid interest.

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG ("GIAG"). Glencore Canada Corporation ("Glencore Canada") is an indirect wholly-owned subsidiary of GIAG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001104659-25-065039 · tm2519591-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 49,514.39

Underlying: Common Stock · 16,477 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-25-065039 · tm2519591-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,554,508

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 164.77 shares of Series A Convertible Preferred Stock on June 30, 2025.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-25-030252 · tm2510907-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 49,679.16

Underlying: Common Stock · 3,593 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-25-030252 · tm2510907-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,538,031

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 35.93 shares of Series A Convertible Preferred Stock on March 31, 2025.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-25-000640 · tm251829-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 49,715.09

Underlying: Common Stock · 210,162 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-25-000640 · tm251829-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,534,438

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 2,101.62 shares of Series A Convertible Preferred Stock on December 31, 2024.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001140361-25-000124 · form4.xml · derivative · entry 3

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F12 · security: In connection with any optional or mandatory redemption, and provided that Glencore Canada has not elected to convert the New Note and/or the A&R Notes (collectively, the "Notes") into Common Shares, following receipt of notice of such redemption the Issuer is required to issue a number of warrants to Glencore Canada that entitle it to acquire a number of Common Shares equal to the principal amount of the applicable Notes being redeemed divided by the then applicable conversion price and expiring on March 25, 2030 (if the New Note) or the maturity of the applicable A&R Notes.

F5 · derivative.exercise_price: The Issuer previously issued to Glencore Canada two amended and restated convertible notes (the first note for $116,551,170.40 in original principal amount being "A&R Note 1" and the second note for $114,615,632 in original principal amount being "A&R Note 2" and together, the "A&R Notes"). The principal and accrued interest owing under A&R Note 1 and A&R Note 2 may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at conversion prices per share of $3.03 and $76.23 (each as of December 9, 2024), respectively, subject to further adjustments.

F8 · derivative.exercise_price: A&R Note 2 includes an event-driven modification to the conversion price, with such modification occurring on the date (the "Modification Date") that is the earliest to occur of (a) the last day of the fiscal quarter of the first commercial production from the Rochester hub, (b) the last day of a fiscal quarter of construction costs exceeding the construction budget set forth in the project loan financing by a set percentage, and (c) June 1, 2026. At the Modification Date, the conversion price will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the Modification Date plus a 25% premium per share, and (y) $76.23 per share, as may be further adjusted.

F10 · reported_value: The Issuer elected to have all accrued and unpaid interest on A&R Note 2 to, but not including, the interest payment date of December 31, 2024 be paid by PIK, which resulted in the aggregate principal amount of A&R Note 2 increasing by an additional $7,157,109.47 (based on the $76.23 conversion price, convertible up to 93,888 Common Shares).

F13 · price: Not applicable.

F5 · derivative.exercise_date: The Issuer previously issued to Glencore Canada two amended and restated convertible notes (the first note for $116,551,170.40 in original principal amount being "A&R Note 1" and the second note for $114,615,632 in original principal amount being "A&R Note 2" and together, the "A&R Notes"). The principal and accrued interest owing under A&R Note 1 and A&R Note 2 may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at conversion prices per share of $3.03 and $76.23 (each as of December 9, 2024), respectively, subject to further adjustments.

F9 · derivative.expiration_date: Until the Modification Date, A&R Note 2 accrues interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and A&R Note 2 is due and payable on May 31, 2027 in an amount equal to the principal amount of A&R Note 2 outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, A&R Note 2 accrues interest at the Floating Rate, plus 6% per annum if interest is paid by PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F11 · derivative.expiration_date: Upon the occurrence of the Modification Date, the terms of A&R Note 2 will mirror the following incremental terms of the New Note: the maturity will be amended to be five years from the Modification Date, the interest rate will be amended to match the interest rate applicable to the New Note, mandatory redemption will be required (including, from the Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to proration)), and the Issuer will provide guarantees and security for A&R Note 2 consistent with the New Note.

F10 · derivative.underlying_shares: The Issuer elected to have all accrued and unpaid interest on A&R Note 2 to, but not including, the interest payment date of December 31, 2024 be paid by PIK, which resulted in the aggregate principal amount of A&R Note 2 increasing by an additional $7,157,109.47 (based on the $76.23 conversion price, convertible up to 93,888 Common Shares).

F2 · valueOwnedAfter: Reflects the outstanding principal amount of the New Note and the applicable A&R Note, inclusive of the PIKs made through December 31, 2024 (each capitalized term as defined herein).

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation ("Glencore Canada") is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001140361-25-000124 · form4.xml · derivative · entry 2

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F12 · security: In connection with any optional or mandatory redemption, and provided that Glencore Canada has not elected to convert the New Note and/or the A&R Notes (collectively, the "Notes") into Common Shares, following receipt of notice of such redemption the Issuer is required to issue a number of warrants to Glencore Canada that entitle it to acquire a number of Common Shares equal to the principal amount of the applicable Notes being redeemed divided by the then applicable conversion price and expiring on March 25, 2030 (if the New Note) or the maturity of the applicable A&R Notes.

F5 · derivative.exercise_price: The Issuer previously issued to Glencore Canada two amended and restated convertible notes (the first note for $116,551,170.40 in original principal amount being "A&R Note 1" and the second note for $114,615,632 in original principal amount being "A&R Note 2" and together, the "A&R Notes"). The principal and accrued interest owing under A&R Note 1 and A&R Note 2 may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at conversion prices per share of $3.03 and $76.23 (each as of December 9, 2024), respectively, subject to further adjustments.

F7 · reported_value: The Issuer elected to have all accrued and unpaid interest on A&R Note 1 to, but not including, the interest payment date of December 31, 2024 be paid by PIK, which resulted in the aggregate principal amount of A&R Note 1 increasing by an additional $7,507,960.92 (based on the $3.03 conversion price, convertible up to 2,477,874 Common Shares).

F13 · price: Not applicable.

F5 · derivative.exercise_date: The Issuer previously issued to Glencore Canada two amended and restated convertible notes (the first note for $116,551,170.40 in original principal amount being "A&R Note 1" and the second note for $114,615,632 in original principal amount being "A&R Note 2" and together, the "A&R Notes"). The principal and accrued interest owing under A&R Note 1 and A&R Note 2 may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at conversion prices per share of $3.03 and $76.23 (each as of December 9, 2024), respectively, subject to further adjustments.

F6 · derivative.expiration_date: A&R Note 1 matures on December 9, 2029. Interest on the note is payable either in cash or by PIK at the Issuer's election, on a semi-annual basis, and accrued until December 8, 2024 at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 6% per annum if interest is paid by PIK, and from December 9, 2024 and thereafter accrues at the interest rate applicable to the New Note. Mandatory redemption will be required in the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to proration). The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F7 · derivative.underlying_shares: The Issuer elected to have all accrued and unpaid interest on A&R Note 1 to, but not including, the interest payment date of December 31, 2024 be paid by PIK, which resulted in the aggregate principal amount of A&R Note 1 increasing by an additional $7,507,960.92 (based on the $3.03 conversion price, convertible up to 2,477,874 Common Shares).

F2 · valueOwnedAfter: Reflects the outstanding principal amount of the New Note and the applicable A&R Note, inclusive of the PIKs made through December 31, 2024 (each capitalized term as defined herein).

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation ("Glencore Canada") is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001140361-25-000124 · form4.xml · derivative · entry 1

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F12 · security: In connection with any optional or mandatory redemption, and provided that Glencore Canada has not elected to convert the New Note and/or the A&R Notes (collectively, the "Notes") into Common Shares, following receipt of notice of such redemption the Issuer is required to issue a number of warrants to Glencore Canada that entitle it to acquire a number of Common Shares equal to the principal amount of the applicable Notes being redeemed divided by the then applicable conversion price and expiring on March 25, 2030 (if the New Note) or the maturity of the applicable A&R Notes.

F3 · derivative.exercise_price: The Issuer previously issued to Glencore Canada a senior secured convertible note (the "New Note"). The principal and accrued interest owing under the New Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares of the Issuer at the conversion price of $4.14 per share (as of December 9, 2024), subject to further adjustments. The New Note matures on March 25, 2029. Mandatory redemption of the New Note will be required in the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to proration).

F4 · reported_value: Interest on the New Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis, and is based on the secured overnight financing rate plus 6% per year if interest is paid by PIK. The Issuer elected to have all accrued and unpaid interest on the New Note to, but not including, the interest payment date of December 31, 2024 be paid by PIK, which resulted in the aggregate principal amount of the New Note increasing by an additional $6,573,643.75 (based on the $4.14 conversion price, convertible up to 1,587,836 Common Shares).

F13 · price: Not applicable.

F3 · derivative.exercise_date: The Issuer previously issued to Glencore Canada a senior secured convertible note (the "New Note"). The principal and accrued interest owing under the New Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares of the Issuer at the conversion price of $4.14 per share (as of December 9, 2024), subject to further adjustments. The New Note matures on March 25, 2029. Mandatory redemption of the New Note will be required in the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to proration).

F3 · derivative.expiration_date: The Issuer previously issued to Glencore Canada a senior secured convertible note (the "New Note"). The principal and accrued interest owing under the New Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares of the Issuer at the conversion price of $4.14 per share (as of December 9, 2024), subject to further adjustments. The New Note matures on March 25, 2029. Mandatory redemption of the New Note will be required in the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to proration).

F4 · derivative.underlying_shares: Interest on the New Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis, and is based on the secured overnight financing rate plus 6% per year if interest is paid by PIK. The Issuer elected to have all accrued and unpaid interest on the New Note to, but not including, the interest payment date of December 31, 2024 be paid by PIK, which resulted in the aggregate principal amount of the New Note increasing by an additional $6,573,643.75 (based on the $4.14 conversion price, convertible up to 1,587,836 Common Shares).

F2 · valueOwnedAfter: Reflects the outstanding principal amount of the New Note and the applicable A&R Note, inclusive of the PIKs made through December 31, 2024 (each capitalized term as defined herein).

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation ("Glencore Canada") is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001104659-24-105269 · tm2425424-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 51,816.71

Underlying: Common Stock · 13,192 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-24-105269 · tm2425424-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,324,276

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 131.92 shares of Series A Convertible Preferred Stock on September 30, 2024.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-24-077161 · tm2418649-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 51,948.63

Underlying: Common Stock · 29,014 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-24-077161 · tm2418649-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,311,084

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 290.14 shares of Series A Convertible Preferred Stock on June 30, 2024.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001140361-24-027741 · form4.xml · nonDerivative · entry 1

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Sinha Kunal · CIK 0001995318 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 280,240

F2 · kind: Restricted stock units ("RSUs") awarded by the Issuer to Mr. Sinha for service as a non-employee director of the Issuer under its 2021 Incentive Award Plan. Each RSU represents the contingent right to receive one common share of the Issuer subject to time-vesting conditions in accordance with the underlying award and Mr. Sinha's continued service through such vesting date.

F2 · shares: Restricted stock units ("RSUs") awarded by the Issuer to Mr. Sinha for service as a non-employee director of the Issuer under its 2021 Incentive Award Plan. Each RSU represents the contingent right to receive one common share of the Issuer subject to time-vesting conditions in accordance with the underlying award and Mr. Sinha's continued service through such vesting date.

F2 · price: Restricted stock units ("RSUs") awarded by the Issuer to Mr. Sinha for service as a non-employee director of the Issuer under its 2021 Incentive Award Plan. Each RSU represents the contingent right to receive one common share of the Issuer subject to time-vesting conditions in accordance with the underlying award and Mr. Sinha's continued service through such vesting date.

F3 · balance_after: Includes 220,855 RSUs. Mr. Sinha holds all the securities reported herein for the benefit of Glencore plc, Glencore International AG, and/or Glencore Canada Corporation (collectively, "Glencore"), and may, after vesting, if applicable, transfer the securities directly to Glencore or its subsidiaries.

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG, Glencore Canada Corporation and Kunal Sinha (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation is an indirect wholly-owned subsidiary of Glencore International AG. Mr. Sinha is the Global Head of Recycling at the Glencore group and is a director of the Issuer. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

F3 · ownership.nature: Includes 220,855 RSUs. Mr. Sinha holds all the securities reported herein for the benefit of Glencore plc, Glencore International AG, and/or Glencore Canada Corporation (collectively, "Glencore"), and may, after vesting, if applicable, transfer the securities directly to Glencore or its subsidiaries.

SEC source: 0001104659-24-042414 · tm2410597-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 52,238.77

Underlying: Common Stock · 4,562 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-24-042414 · tm2410597-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,282,070

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 45.62 shares of Series A Convertible Preferred Stock on March 31, 2024.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001140361-24-013125 · form4.xml · derivative · entry 3

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F10 · security: In connection with any optional or mandatory redemption and provided that Glencore Canada Corporation has not elected to convert the applicable A&R Convertible Note into Common Shares following receipt of notice of such redemption, the Issuer is required to issue a number of warrants to Glencore Canada Corporation that entitle it to acquire a number of Common Shares equal to the principal amount of the applicable A&R Convertible Note being redeemed divided by the then applicable conversion price and expiring on maturity date of the applicable A&R Convertible Note.

F6 · derivative.exercise_price: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F4 · shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F4 · price: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F6 · derivative.exercise_date: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.expiration_date: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.expiration_date: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · derivative.underlying_shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F5 · derivative.underlying_shares: Each A&R Convertible Note includes an event-driven modification to the Existing Convertible Notes, with the first such modification occurring on the date (the "First Modification Date") that is the earlier of (a) the date that is one month after the effectiveness and initial funding, if any, of a project loan financing for the Issuer's Rochester hub, and (b) December 31, 2024, and the second such modification occurring on the date (the "Second Modification Date" with either the First Modification Date or the Second Modification Date referred to herein as a "Modification Date") that is the earliest to occur of (a) the first commercial production from the Rochester hub, (b) construction costs exceeding the construction budget set forth in the project loan financing, and (c) June 1, 2026.

F6 · derivative.underlying_shares: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.underlying_shares: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.underlying_shares: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · valueOwnedAfter: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001140361-24-013125 · form4.xml · derivative · entry 2

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F10 · security: In connection with any optional or mandatory redemption and provided that Glencore Canada Corporation has not elected to convert the applicable A&R Convertible Note into Common Shares following receipt of notice of such redemption, the Issuer is required to issue a number of warrants to Glencore Canada Corporation that entitle it to acquire a number of Common Shares equal to the principal amount of the applicable A&R Convertible Note being redeemed divided by the then applicable conversion price and expiring on maturity date of the applicable A&R Convertible Note.

F6 · derivative.exercise_price: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F4 · shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F4 · price: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F6 · derivative.exercise_date: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.expiration_date: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.expiration_date: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · derivative.underlying_shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F5 · derivative.underlying_shares: Each A&R Convertible Note includes an event-driven modification to the Existing Convertible Notes, with the first such modification occurring on the date (the "First Modification Date") that is the earlier of (a) the date that is one month after the effectiveness and initial funding, if any, of a project loan financing for the Issuer's Rochester hub, and (b) December 31, 2024, and the second such modification occurring on the date (the "Second Modification Date" with either the First Modification Date or the Second Modification Date referred to herein as a "Modification Date") that is the earliest to occur of (a) the first commercial production from the Rochester hub, (b) construction costs exceeding the construction budget set forth in the project loan financing, and (c) June 1, 2026.

F6 · derivative.underlying_shares: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.underlying_shares: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.underlying_shares: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · valueOwnedAfter: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001140361-24-013125 · form4.xml · derivative · entry 1

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F9 · security: In connection with any optional or mandatory redemption and provided that Glencore Canada Corporation has not elected to convert the Senior Secured Convertible Note into Common Shares following receipt of notice of such redemption, the Issuer is required to issue a number of warrants to Glencore Canada Corporation that entitle it to acquire a number of Common Shares equal to the principal amount of the Senior Secured Convertible Note being redeemed divided by the then applicable conversion price and expiring on the sixth anniversary of the issuance of the Senior Secured Convertible Note.

F2 · derivative.exercise_price: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F2 · reported_value: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F2 · price: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F2 · derivative.exercise_date: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F3 · derivative.expiration_date: The Senior Secured Convertible Note will mature on the fifth anniversary of the closing of the Transaction. Interest on the Senior Secured Convertible Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis from the date of issuance, and will be based on the secured overnight financing rate plus 5% per year if interest is paid in cash and plus 6% per year if interest is paid in PIK. In the case that an event of default has occurred and is continuing, the interest rate will be the rate stated above, plus 1% per year (which additional 1% will be payable in cash).

F2 · derivative.underlying_shares: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F3 · derivative.underlying_shares: The Senior Secured Convertible Note will mature on the fifth anniversary of the closing of the Transaction. Interest on the Senior Secured Convertible Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis from the date of issuance, and will be based on the secured overnight financing rate plus 5% per year if interest is paid in cash and plus 6% per year if interest is paid in PIK. In the case that an event of default has occurred and is continuing, the interest rate will be the rate stated above, plus 1% per year (which additional 1% will be payable in cash).

F2 · valueOwnedAfter: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F3 · valueOwnedAfter: The Senior Secured Convertible Note will mature on the fifth anniversary of the closing of the Transaction. Interest on the Senior Secured Convertible Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis from the date of issuance, and will be based on the secured overnight financing rate plus 5% per year if interest is paid in cash and plus 6% per year if interest is paid in PIK. In the case that an event of default has occurred and is continuing, the interest rate will be the rate stated above, plus 1% per year (which additional 1% will be payable in cash).

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001140361-24-013593 · form4.xml · derivative · entry 3

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F10 · security: In connection with any optional or mandatory redemption and provided that Glencore Canada Corporation has not elected to convert the applicable A&R Convertible Note into Common Shares following receipt of notice of such redemption, the Issuer is required to issue a number of warrants to Glencore Canada Corporation that entitle it to acquire a number of Common Shares equal to the principal amount of the applicable A&R Convertible Note being redeemed divided by the then applicable conversion price and expiring on maturity date of the applicable A&R Convertible Note.

F6 · derivative.exercise_price: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F4 · shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F4 · price: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F6 · derivative.exercise_date: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.expiration_date: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.expiration_date: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · derivative.underlying_shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F5 · derivative.underlying_shares: Each A&R Convertible Note includes an event-driven modification to the Existing Convertible Notes, with the first such modification occurring on the date (the "First Modification Date") that is the earlier of (a) the date that is one month after the effectiveness and initial funding, if any, of a project loan financing for the Issuer's Rochester hub, and (b) December 31, 2024, and the second such modification occurring on the date (the "Second Modification Date" with either the First Modification Date or the Second Modification Date referred to herein as a "Modification Date") that is the earliest to occur of (a) the first commercial production from the Rochester hub, (b) construction costs exceeding the construction budget set forth in the project loan financing, and (c) June 1, 2026.

F6 · derivative.underlying_shares: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.underlying_shares: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.underlying_shares: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · valueOwnedAfter: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001140361-24-013593 · form4.xml · derivative · entry 2

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F10 · security: In connection with any optional or mandatory redemption and provided that Glencore Canada Corporation has not elected to convert the applicable A&R Convertible Note into Common Shares following receipt of notice of such redemption, the Issuer is required to issue a number of warrants to Glencore Canada Corporation that entitle it to acquire a number of Common Shares equal to the principal amount of the applicable A&R Convertible Note being redeemed divided by the then applicable conversion price and expiring on maturity date of the applicable A&R Convertible Note.

F6 · derivative.exercise_price: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F4 · shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F4 · price: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F6 · derivative.exercise_date: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.expiration_date: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.expiration_date: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · derivative.underlying_shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F5 · derivative.underlying_shares: Each A&R Convertible Note includes an event-driven modification to the Existing Convertible Notes, with the first such modification occurring on the date (the "First Modification Date") that is the earlier of (a) the date that is one month after the effectiveness and initial funding, if any, of a project loan financing for the Issuer's Rochester hub, and (b) December 31, 2024, and the second such modification occurring on the date (the "Second Modification Date" with either the First Modification Date or the Second Modification Date referred to herein as a "Modification Date") that is the earliest to occur of (a) the first commercial production from the Rochester hub, (b) construction costs exceeding the construction budget set forth in the project loan financing, and (c) June 1, 2026.

F6 · derivative.underlying_shares: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 22,649,003 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.underlying_shares: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.underlying_shares: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · valueOwnedAfter: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation, and as of March 13, 2024, the aggregate outstanding principal of $225,357,584.66 of the Existing Convertible Notes includes $25,357,584.66 in PIK interest. At the closing, one of the A&R Convertible Notes will have an original principal amount of $116,551,170.40, and the other A&R Convertible Note will have an original principal amount of $108,806,414.26 plus accrued and unpaid interest through but not including the closing date on the outstanding $200 million original principal amount of Existing Convertible Notes.

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001140361-24-013593 · form4.xml · derivative · entry 1

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F9 · security: In connection with any optional or mandatory redemption and provided that Glencore Canada Corporation has not elected to convert the Senior Secured Convertible Note into Common Shares following receipt of notice of such redemption, the Issuer is required to issue a number of warrants to Glencore Canada Corporation that entitle it to acquire a number of Common Shares equal to the principal amount of the Senior Secured Convertible Note being redeemed divided by the then applicable conversion price and expiring on the sixth anniversary of the issuance of the Senior Secured Convertible Note.

F2 · derivative.exercise_price: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F2 · reported_value: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F2 · price: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F2 · derivative.exercise_date: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F3 · derivative.expiration_date: The Senior Secured Convertible Note will mature on the fifth anniversary of the closing of the Transaction. Interest on the Senior Secured Convertible Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis from the date of issuance, and will be based on the secured overnight financing rate plus 5% per year if interest is paid in cash and plus 6% per year if interest is paid in PIK. In the case that an event of default has occurred and is continuing, the interest rate will be the rate stated above, plus 1% per year (which additional 1% will be payable in cash).

F2 · derivative.underlying_shares: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F3 · derivative.underlying_shares: The Senior Secured Convertible Note will mature on the fifth anniversary of the closing of the Transaction. Interest on the Senior Secured Convertible Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis from the date of issuance, and will be based on the secured overnight financing rate plus 5% per year if interest is paid in cash and plus 6% per year if interest is paid in PIK. In the case that an event of default has occurred and is continuing, the interest rate will be the rate stated above, plus 1% per year (which additional 1% will be payable in cash).

F2 · valueOwnedAfter: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F3 · valueOwnedAfter: The Senior Secured Convertible Note will mature on the fifth anniversary of the closing of the Transaction. Interest on the Senior Secured Convertible Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis from the date of issuance, and will be based on the secured overnight financing rate plus 5% per year if interest is paid in cash and plus 6% per year if interest is paid in PIK. In the case that an event of default has occurred and is continuing, the interest rate will be the rate stated above, plus 1% per year (which additional 1% will be payable in cash).

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001140361-24-015374 · form4.xml · derivative · entry 3

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F10 · security: In connection with any optional or mandatory redemption and provided that Glencore Canada Corporation has not elected to convert the applicable A&R Convertible Note into Common Shares following receipt of notice of such redemption, the Issuer is required to issue a number of warrants to Glencore Canada Corporation that entitle it to acquire a number of Common Shares equal to the principal amount of the applicable A&R Convertible Note being redeemed divided by the then applicable conversion price and expiring on maturity date of the applicable A&R Convertible Note.

F6 · derivative.exercise_price: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 23,232,844 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F4 · shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation.

F4 · price: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation.

F6 · derivative.exercise_date: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 23,232,844 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.expiration_date: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.expiration_date: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · derivative.underlying_shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation.

F5 · derivative.underlying_shares: Each A&R Convertible Note includes an event-driven modification to the Existing Convertible Notes, with the first such modification occurring on the date (the "First Modification Date") that is the earlier of (a) the date that is one month after the effectiveness and initial funding, if any, of a project loan financing for the Issuer's Rochester hub, and (b) December 31, 2024, and the second such modification occurring on the date (the "Second Modification Date" with either the First Modification Date or the Second Modification Date referred to herein as a "Modification Date") that is the earliest to occur of (a) the first commercial production from the Rochester hub, (b) construction costs exceeding the construction budget set forth in the project loan financing, and (c) June 1, 2026.

F6 · derivative.underlying_shares: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 23,232,844 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.underlying_shares: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.underlying_shares: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · valueOwnedAfter: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation.

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001140361-24-015374 · form4.xml · derivative · entry 2

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F10 · security: In connection with any optional or mandatory redemption and provided that Glencore Canada Corporation has not elected to convert the applicable A&R Convertible Note into Common Shares following receipt of notice of such redemption, the Issuer is required to issue a number of warrants to Glencore Canada Corporation that entitle it to acquire a number of Common Shares equal to the principal amount of the applicable A&R Convertible Note being redeemed divided by the then applicable conversion price and expiring on maturity date of the applicable A&R Convertible Note.

F6 · derivative.exercise_price: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 23,232,844 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F4 · shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation.

F4 · price: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation.

F6 · derivative.exercise_date: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 23,232,844 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.expiration_date: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.expiration_date: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · derivative.underlying_shares: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation.

F5 · derivative.underlying_shares: Each A&R Convertible Note includes an event-driven modification to the Existing Convertible Notes, with the first such modification occurring on the date (the "First Modification Date") that is the earlier of (a) the date that is one month after the effectiveness and initial funding, if any, of a project loan financing for the Issuer's Rochester hub, and (b) December 31, 2024, and the second such modification occurring on the date (the "Second Modification Date" with either the First Modification Date or the Second Modification Date referred to herein as a "Modification Date") that is the earliest to occur of (a) the first commercial production from the Rochester hub, (b) construction costs exceeding the construction budget set forth in the project loan financing, and (c) June 1, 2026.

F6 · derivative.underlying_shares: Subject to the closing of the Transaction, the principal and accrued interest owing under the A&R Convertible Notes may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $9.95 per share, subject to adjustments (based on the initial conversion price, up to 23,232,844 Common Shares). At each Modification Date, the conversion price for the applicable tranche will be adjusted to be the lesser of (x) an amount determined on the basis of a 30-Day VWAP (volume weighted average trading price) having a reference date equal to the applicable Modification Date plus a 25% premium per share, and (y) $9.95 per share.

F7 · derivative.underlying_shares: Until the Modification Date, the A&R Convertible Notes accrue interest payable semi-annually, either in cash or by PIK, in the Issuer's discretion, and are due and payable on May 31, 2027 in an amount equal to the principal amount of the applicable A&R Convertible Note outstanding on such date (plus any accrued but unpaid interest thereon), unless earlier converted, redeemed or repurchased. Until the Modification Date, the A&R Convertible Notes accrue interest at the forward-looking term rate based on the secured overnight financing rate for a tenor comparable to the relevant interest payment period plus 0.42826% (the "Floating Rate"), plus 5% per annum if interest is paid in cash and plus 6% per annum if interest is paid in PIK. The Floating Rate cannot be less than 1% per year nor more than 2% per year.

F8 · derivative.underlying_shares: Upon the occurrence of each Modification Date, the terms of the applicable A&R Convertible Note will mirror the following incremental terms of the Senior Secured Convertible Note: the maturity will be amended to be five years from the applicable Modification Date, the interest rate will be amended to match the interest rate applicable to the Senior Secured Convertible Note, mandatory redemption will be required (including, from the First Modification Date and the Second Modification Date, the amount equal to a specified percentage of the excess cash flow generated by the Issuer and its subsidiaries for the applicable fiscal year (less certain deductions and subject to pro rata application to certain other debt of the Issuer) in a pro rata amount across the A&R Convertible Notes (to the extent modified), and the Issuer will provide guarantees and security for the A&R Convertible Notes consistent with the Senior Secured Convertible Note.

F4 · valueOwnedAfter: As contemplated by the New Note Purchase Agreement, at the closing of the Transaction the Issuer will amend and restate the terms of the existing convertible notes issued by the Issuer on May 31, 2022 (the "Existing Convertible Notes") in two tranches (and such resulting two tranches of the amended and restated unsecured convertible notes, the "A&R Convertible Notes"). Prior to the closing, the Existing Convertible Notes will be assigned to Glencore Canada Corporation.

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001140361-24-015374 · form4.xml · derivative · entry 1

Glencore plc · CIK 0001521365 · Director · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · Director · 10% owner

Glencore Canada Corp · CIK 0002015686 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: Not disclosed

Underlying: Common Shares · Not disclosed shares

Expires not disclosed

F9 · security: In connection with any optional or mandatory redemption and provided that Glencore Canada Corporation has not elected to convert the Senior Secured Convertible Note into Common Shares following receipt of notice of such redemption, the Issuer is required to issue a number of warrants to Glencore Canada Corporation that entitle it to acquire a number of Common Shares equal to the principal amount of the Senior Secured Convertible Note being redeemed divided by the then applicable conversion price and expiring on the sixth anniversary of the issuance of the Senior Secured Convertible Note.

F2 · derivative.exercise_price: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F2 · reported_value: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F2 · price: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F2 · derivative.exercise_date: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F3 · derivative.expiration_date: The Senior Secured Convertible Note will mature on the fifth anniversary of the closing of the Transaction. Interest on the Senior Secured Convertible Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis from the date of issuance, and will be based on the secured overnight financing rate plus 5% per year if interest is paid in cash and plus 6% per year if interest is paid in PIK. In the case that an event of default has occurred and is continuing, the interest rate will be the rate stated above, plus 1% per year (which additional 1% will be payable in cash).

F2 · derivative.underlying_shares: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F3 · derivative.underlying_shares: The Senior Secured Convertible Note will mature on the fifth anniversary of the closing of the Transaction. Interest on the Senior Secured Convertible Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis from the date of issuance, and will be based on the secured overnight financing rate plus 5% per year if interest is paid in cash and plus 6% per year if interest is paid in PIK. In the case that an event of default has occurred and is continuing, the interest rate will be the rate stated above, plus 1% per year (which additional 1% will be payable in cash).

F2 · valueOwnedAfter: On March 11, 2024, Glencore Canada Corporation entered into a Note Purchase Agreement (the "New Note Purchase Agreement") with the Issuer and Glencore Ltd., pursuant to which the Issuer agreed to issue and sell to Glencore Canada Corporation a senior secured convertible note (the "Senior Secured Convertible Note") in an aggregate principal amount of $75,000,000 (the "Transaction"). The closing of the Transaction is expected to occur on or about March 25, 2024. Subject to the closing of the Transaction, the principal and accrued interest owing under the Senior Secured Convertible Note may be converted at any time, subject to the satisfaction of applicable regulatory conditions, by the holder into Common Shares at a conversion price of $0.53 per share, subject to adjustments (based on the initial conversion price, up to 141,509,433 Common Shares).

F3 · valueOwnedAfter: The Senior Secured Convertible Note will mature on the fifth anniversary of the closing of the Transaction. Interest on the Senior Secured Convertible Note is payable either in cash or by payment-in-kind ("PIK") at the Issuer's election, on a semi-annual basis from the date of issuance, and will be based on the secured overnight financing rate plus 5% per year if interest is paid in cash and plus 6% per year if interest is paid in PIK. In the case that an event of default has occurred and is continuing, the interest rate will be the rate stated above, plus 1% per year (which additional 1% will be payable in cash).

F1 · ownership.nature: This form is being filed by each of the following reporting persons: Glencore plc, Glencore International AG and Glencore Canada Corporation (collectively, the "Reporting Persons"). Glencore plc is the parent company of Glencore International AG. Glencore Canada Corporation is an indirect wholly-owned subsidiary of Glencore International AG. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.

SEC source: 0001104659-24-000657 · tm241748-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 52,284.39

Underlying: Common Stock · 122,393 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-24-000657 · tm241748-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,277,508

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 1,223.93 shares of Series A Convertible Preferred Stock on December 31, 2023.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-23-105760 · tm2327230-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 53,508.32

Underlying: Common Stock · 19,790 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-23-105760 · tm2327230-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,155,115

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 197.90 shares of Series A Convertible Preferred Stock on September 30, 2023.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-23-077837 · tm2320564-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 53,706.22

Underlying: Common Stock · 14,836 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-23-077837 · tm2320564-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,135,325

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 148.36 shares of Series A Convertible Preferred Stock on June 30, 2023.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-23-000701 · tm231615-1_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 53,854.58

Underlying: Common Stock · 419,168 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-23-000701 · tm231615-1_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 12,120,489

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 4,191.68 shares of Series A Convertible Preferred Stock on December 31, 2022.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.nature: The shares of Common Stock reported in Line 1 of Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and may be deemed to be indirectly beneficially owned by Glencore International AG. The Common Stock reported on Line 2 of Table I is held directly by Glencore International AG. Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-22-127501 · tm2232820-2_4seq1.xml · derivative · entry 5

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 27,500,000 shares

Expires 2027-09-14

F4 · derivative.exercise_price: The 2017 Transactions additionally included (i) Glencore AG's sale to Ryfold of 100% of the equity interest in Givolon for an aggregate price of $100, and (ii) the acquisition by Glencore AG from Ryfold, for aggregate premium of $100, of the American-style call option reported on Line 3 of Table II, which gives Glencore AG the right to purchase from Ryfold, at any time prior to the expiration thereof, 100% of the equity interests in Givolon for an aggregate exercise price of $100 (the "Givolon Call Option").

F1 · kind: On September 14, 2017, Glencore AG, a wholly-owned subsidiary of Glencore International AG, entered into a series of transactions (the "2017 Transactions") with Ryfold Limited ("Ryfold") and Givolon Limited, currently a wholly-owned subsidiary of Ryfold ("Givolon"), in connection with a financing (the "Financing") to be secured by a pledge by Givolon of 27,500,000 shares of Common Stock (the "Specified Shares").

F2 · kind: The 2017 Transactions included (i) Glencore AG's sale to Givolon of the Specified Shares at a per share price of $18.03075, and (ii) the acquisition by Glencore AG from Givolon, for a premium of $15.32613 per share, of the American-style call option reported on Line 1 of Table II, which gives Glencore AG the right to purchase from Givolon, at any time prior to the expiration thereof, a number of shares of Common Stock equal to the Specified Shares at a price equal to $2.70462 per share of Common Stock (the "Century Call Option").

F3 · kind: The 2017 Transactions also included the stock-settled total return swap reported on Line 2 of Table II, which will automatically terminate if the Century Call Option is exercised, pursuant to which Glencore AG received economic exposure to a number of shares of Common Stock equal to the Specified Shares and upon settlement of which Givolon will be obligated to deliver a number of shares equal to the Specified Shares to Glencore AG and Glencore AG will be obligated to pay to Givolon the reference price of $18.03075 per share (the "Century TRS").

F4 · kind: The 2017 Transactions additionally included (i) Glencore AG's sale to Ryfold of 100% of the equity interest in Givolon for an aggregate price of $100, and (ii) the acquisition by Glencore AG from Ryfold, for aggregate premium of $100, of the American-style call option reported on Line 3 of Table II, which gives Glencore AG the right to purchase from Ryfold, at any time prior to the expiration thereof, 100% of the equity interests in Givolon for an aggregate exercise price of $100 (the "Givolon Call Option").

F5 · kind: In connection with the termination of the Financing and the related pledge, on December 15, 2022 Glencore AG, Givolon and Ryfold terminated and cancelled the 2017 Transactions, including the Century Call Option, the Century TRS and the Givolon Call Option, and Givolon transferred the Specified Shares to Glencore AG's parent, Glencore International AG.

F5 · price: In connection with the termination of the Financing and the related pledge, on December 15, 2022 Glencore AG, Givolon and Ryfold terminated and cancelled the 2017 Transactions, including the Century Call Option, the Century TRS and the Givolon Call Option, and Givolon transferred the Specified Shares to Glencore AG's parent, Glencore International AG.

F4 · derivative.underlying_shares: The 2017 Transactions additionally included (i) Glencore AG's sale to Ryfold of 100% of the equity interest in Givolon for an aggregate price of $100, and (ii) the acquisition by Glencore AG from Ryfold, for aggregate premium of $100, of the American-style call option reported on Line 3 of Table II, which gives Glencore AG the right to purchase from Ryfold, at any time prior to the expiration thereof, 100% of the equity interests in Givolon for an aggregate exercise price of $100 (the "Givolon Call Option").

F6 · derivative.underlying_shares: The Common Stock reported in Line 2 of Table I and the Century Call Option, Century TRS and Givolon Call Option reported in Table II are held directly by Glencore AG, a wholly owned subsidiary of Glencore International AG, and indirectly by Glencore International AG. The Common Stock reported on Line 1 of Table I is held directly by Glencore International AG.

F6 · ownership.nature: The Common Stock reported in Line 2 of Table I and the Century Call Option, Century TRS and Givolon Call Option reported in Table II are held directly by Glencore AG, a wholly owned subsidiary of Glencore International AG, and indirectly by Glencore International AG. The Common Stock reported on Line 1 of Table I is held directly by Glencore International AG.

F7 · ownership.nature: Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-22-127501 · tm2232820-2_4seq1.xml · derivative · entry 4

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 27,500,000 shares

Expires 2022-12-31

F3 · derivative.exercise_price: The 2017 Transactions also included the stock-settled total return swap reported on Line 2 of Table II, which will automatically terminate if the Century Call Option is exercised, pursuant to which Glencore AG received economic exposure to a number of shares of Common Stock equal to the Specified Shares and upon settlement of which Givolon will be obligated to deliver a number of shares equal to the Specified Shares to Glencore AG and Glencore AG will be obligated to pay to Givolon the reference price of $18.03075 per share (the "Century TRS").

F1 · kind: On September 14, 2017, Glencore AG, a wholly-owned subsidiary of Glencore International AG, entered into a series of transactions (the "2017 Transactions") with Ryfold Limited ("Ryfold") and Givolon Limited, currently a wholly-owned subsidiary of Ryfold ("Givolon"), in connection with a financing (the "Financing") to be secured by a pledge by Givolon of 27,500,000 shares of Common Stock (the "Specified Shares").

F2 · kind: The 2017 Transactions included (i) Glencore AG's sale to Givolon of the Specified Shares at a per share price of $18.03075, and (ii) the acquisition by Glencore AG from Givolon, for a premium of $15.32613 per share, of the American-style call option reported on Line 1 of Table II, which gives Glencore AG the right to purchase from Givolon, at any time prior to the expiration thereof, a number of shares of Common Stock equal to the Specified Shares at a price equal to $2.70462 per share of Common Stock (the "Century Call Option").

F3 · kind: The 2017 Transactions also included the stock-settled total return swap reported on Line 2 of Table II, which will automatically terminate if the Century Call Option is exercised, pursuant to which Glencore AG received economic exposure to a number of shares of Common Stock equal to the Specified Shares and upon settlement of which Givolon will be obligated to deliver a number of shares equal to the Specified Shares to Glencore AG and Glencore AG will be obligated to pay to Givolon the reference price of $18.03075 per share (the "Century TRS").

F4 · kind: The 2017 Transactions additionally included (i) Glencore AG's sale to Ryfold of 100% of the equity interest in Givolon for an aggregate price of $100, and (ii) the acquisition by Glencore AG from Ryfold, for aggregate premium of $100, of the American-style call option reported on Line 3 of Table II, which gives Glencore AG the right to purchase from Ryfold, at any time prior to the expiration thereof, 100% of the equity interests in Givolon for an aggregate exercise price of $100 (the "Givolon Call Option").

F5 · kind: In connection with the termination of the Financing and the related pledge, on December 15, 2022 Glencore AG, Givolon and Ryfold terminated and cancelled the 2017 Transactions, including the Century Call Option, the Century TRS and the Givolon Call Option, and Givolon transferred the Specified Shares to Glencore AG's parent, Glencore International AG.

F5 · price: In connection with the termination of the Financing and the related pledge, on December 15, 2022 Glencore AG, Givolon and Ryfold terminated and cancelled the 2017 Transactions, including the Century Call Option, the Century TRS and the Givolon Call Option, and Givolon transferred the Specified Shares to Glencore AG's parent, Glencore International AG.

F3 · derivative.underlying_shares: The 2017 Transactions also included the stock-settled total return swap reported on Line 2 of Table II, which will automatically terminate if the Century Call Option is exercised, pursuant to which Glencore AG received economic exposure to a number of shares of Common Stock equal to the Specified Shares and upon settlement of which Givolon will be obligated to deliver a number of shares equal to the Specified Shares to Glencore AG and Glencore AG will be obligated to pay to Givolon the reference price of $18.03075 per share (the "Century TRS").

F6 · ownership.nature: The Common Stock reported in Line 2 of Table I and the Century Call Option, Century TRS and Givolon Call Option reported in Table II are held directly by Glencore AG, a wholly owned subsidiary of Glencore International AG, and indirectly by Glencore International AG. The Common Stock reported on Line 1 of Table I is held directly by Glencore International AG.

F7 · ownership.nature: Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-22-127501 · tm2232820-2_4seq1.xml · derivative · entry 3

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 27,500,000 shares

Expires 2022-12-31

F1 · kind: On September 14, 2017, Glencore AG, a wholly-owned subsidiary of Glencore International AG, entered into a series of transactions (the "2017 Transactions") with Ryfold Limited ("Ryfold") and Givolon Limited, currently a wholly-owned subsidiary of Ryfold ("Givolon"), in connection with a financing (the "Financing") to be secured by a pledge by Givolon of 27,500,000 shares of Common Stock (the "Specified Shares").

F2 · kind: The 2017 Transactions included (i) Glencore AG's sale to Givolon of the Specified Shares at a per share price of $18.03075, and (ii) the acquisition by Glencore AG from Givolon, for a premium of $15.32613 per share, of the American-style call option reported on Line 1 of Table II, which gives Glencore AG the right to purchase from Givolon, at any time prior to the expiration thereof, a number of shares of Common Stock equal to the Specified Shares at a price equal to $2.70462 per share of Common Stock (the "Century Call Option").

F3 · kind: The 2017 Transactions also included the stock-settled total return swap reported on Line 2 of Table II, which will automatically terminate if the Century Call Option is exercised, pursuant to which Glencore AG received economic exposure to a number of shares of Common Stock equal to the Specified Shares and upon settlement of which Givolon will be obligated to deliver a number of shares equal to the Specified Shares to Glencore AG and Glencore AG will be obligated to pay to Givolon the reference price of $18.03075 per share (the "Century TRS").

F4 · kind: The 2017 Transactions additionally included (i) Glencore AG's sale to Ryfold of 100% of the equity interest in Givolon for an aggregate price of $100, and (ii) the acquisition by Glencore AG from Ryfold, for aggregate premium of $100, of the American-style call option reported on Line 3 of Table II, which gives Glencore AG the right to purchase from Ryfold, at any time prior to the expiration thereof, 100% of the equity interests in Givolon for an aggregate exercise price of $100 (the "Givolon Call Option").

F5 · kind: In connection with the termination of the Financing and the related pledge, on December 15, 2022 Glencore AG, Givolon and Ryfold terminated and cancelled the 2017 Transactions, including the Century Call Option, the Century TRS and the Givolon Call Option, and Givolon transferred the Specified Shares to Glencore AG's parent, Glencore International AG.

F5 · price: In connection with the termination of the Financing and the related pledge, on December 15, 2022 Glencore AG, Givolon and Ryfold terminated and cancelled the 2017 Transactions, including the Century Call Option, the Century TRS and the Givolon Call Option, and Givolon transferred the Specified Shares to Glencore AG's parent, Glencore International AG.

F6 · ownership.nature: The Common Stock reported in Line 2 of Table I and the Century Call Option, Century TRS and Givolon Call Option reported in Table II are held directly by Glencore AG, a wholly owned subsidiary of Glencore International AG, and indirectly by Glencore International AG. The Common Stock reported on Line 1 of Table I is held directly by Glencore International AG.

F7 · ownership.nature: Glencore International AG is wholly owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.

SEC source: 0001104659-22-127501 · tm2232820-2_4seq1.xml · nonDerivative · entry 1

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore AG · CIK 0001449539 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,500,000

F1 · kind: On September 14, 2017, Glencore AG, a wholly-owned subsidiary of Glencore International AG, entered into a series of transactions (the "2017 Transactions") with Ryfold Limited ("Ryfold") and Givolon Limited, currently a wholly-owned subsidiary of Ryfold ("Givolon"), in connection with a financing (the "Financing") to be secured by a pledge by Givolon of 27,500,000 shares of Common Stock (the "Specified Shares").

F2 · kind: The 2017 Transactions included (i) Glencore AG's sale to Givolon of the Specified Shares at a per share price of $18.03075, and (ii) the acquisition by Glencore AG from Givolon, for a premium of $15.32613 per share, of the American-style call option reported on Line 1 of Table II, which gives Glencore AG the right to purchase from Givolon, at any time prior to the expiration thereof, a number of shares of Common Stock equal to the Specified Shares at a price equal to $2.70462 per share of Common Stock (the "Century Call Option").

F3 · kind: The 2017 Transactions also included the stock-settled total return swap reported on Line 2 of Table II, which will automatically terminate if the Century Call Option is exercised, pursuant to which Glencore AG received economic exposure to a number of shares of Common Stock equal to the Specified Shares and upon settlement of which Givolon will be obligated to deliver a number of shares equal to the Specified Shares to Glencore AG and Glencore AG will be obligated to pay to Givolon the reference price of $18.03075 per share (the "Century TRS").

F4 · kind: The 2017 Transactions additionally included (i) Glencore AG's sale to Ryfold of 100% of the equity interest in Givolon for an aggregate price of $100, and (ii) the acquisition by Glencore AG from Ryfold, for aggregate premium of $100, of the American-style call option reported on Line 3 of Table II, which gives Glencore AG the right to purchase from Ryfold, at any time prior to the expiration thereof, 100% of the equity interests in Givolon for an aggregate exercise price of $100 (the "Givolon Call Option").

F5 · kind: In connection with the termination of the Financing and the related pledge, on December 15, 2022 Glencore AG, Givolon and Ryfold terminated and cancelled the 2017 Transactions, including the Century Call Option, the Century TRS and the Givolon Call Option, and Givolon transferred the Specified Shares to Glencore AG's parent, Glencore International AG.

F5 · price: In connection with the termination of the Financing and the related pledge, on December 15, 2022 Glencore AG, Givolon and Ryfold terminated and cancelled the 2017 Transactions, including the Century Call Option, the Century TRS and the Givolon Call Option, and Givolon transferred the Specified Shares to Glencore AG's parent, Glencore International AG.

SEC source: 0001104659-22-105069 · tm2227260-1_4seq1.xml · derivative · entry 2

Glencore AG · CIK 0001449539 · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,046.26

Underlying: Common Stock · 32,982 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.direct: The shares of Common Stock reported in Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and indirectly by Glencore International AG and its parent, Glencore plc.

SEC source: 0001104659-22-105069 · tm2227260-1_4seq1.xml · nonDerivative · entry 1

Glencore AG · CIK 0001449539 · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,701,321

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 329.82 shares of Series A Convertible Preferred Stock on September 30, 2022.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.direct: The shares of Common Stock reported in Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and indirectly by Glencore International AG and its parent, Glencore plc.

SEC source: 0001104659-22-076639 · tm2220262-1_4seq1.xml · nonDerivative · entry 1

Glencore AG · CIK 0001449539 · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,668,339

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 166.35 shares of Series A Convertible Preferred Stock on June 30, 2022.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.direct: The shares of Common Stock reported in Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and indirectly by Glencore International AG and its parent, Glencore plc.

SEC source: 0001104659-22-000613 · tm221440d1_4.xml · derivative · entry 2

Glencore AG · CIK 0001449539 · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,542.43

Underlying: Common Stock · 473,131 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.direct: The shares of Common Stock reported in Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and indirectly by Glencore International AG and its parent, Glencore plc.

SEC source: 0001104659-22-000613 · tm221440d1_4.xml · nonDerivative · entry 1

Glencore AG · CIK 0001449539 · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,651,704

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of Common Stock acquired upon conversion of 4,731.31 shares of Series A Convertible Preferred Stock on December 31, 2021.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.direct: The shares of Common Stock reported in Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and indirectly by Glencore International AG and its parent, Glencore plc.

SEC source: 0001104659-21-088084 · tm2121229d1_4.xml · derivative · entry 2

Glencore AG · CIK 0001449539 · 10% owner

GLENCORE INTERNATIONAL AG · CIK 0001032383 · 10% owner

Glencore plc · CIK 0001521365 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 63,273.74

Underlying: Common Stock · 17,768 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · price: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F2 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock is convertible into 100 shares of Common Stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

F3 · ownership.direct: The shares of Common Stock reported in Table I and the shares of Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and indirectly by Glencore International AG and its parent, Glencore plc.