HYMC

SEC source: 0001493152-26-041418 · ownership.xml · nonDerivative · entry 2

Rhodes Blake · CIK 0001855045 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,068

F2 · shares: Represents an award of 1,811 restricted stock units ("RSUs") by the issuer, all of which vest on September 1, 2027.

F3 · balance_after: Each RSU represents a contingent right to receive one share of the issuer's Class A common stock. The RSUs will convert into shares of common stock upon vesting; provided, however, that if, on the conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the issuer's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the second trading day after the date the reporting person is no longer prohibited from trading.

SEC source: 0001493152-26-041418 · ownership.xml · nonDerivative · entry 1

Rhodes Blake · CIK 0001855045 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,257

F1 · shares: Represents an award of 2,257 restricted stock units ("RSUs") by the issuer, of which 33% vest on each of September 1, 2027, and September 1, 2028, and 34% vest on September 1, 2029.

F3 · balance_after: Each RSU represents a contingent right to receive one share of the issuer's Class A common stock. The RSUs will convert into shares of common stock upon vesting; provided, however, that if, on the conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the issuer's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the second trading day after the date the reporting person is no longer prohibited from trading.

SEC source: 0001493152-26-041416 · ownership.xml · nonDerivative · entry 2

Olmsted Josh F. · CIK 0002153156 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,068

F2 · shares: Represents an award of 1,811 restricted stock units ("RSUs") by the issuer, all of which vest on September 1, 2027.

F3 · balance_after: Each RSU represents a contingent right to receive one share of the issuer's Class A common stock. The RSUs will convert into shares of common stock upon vesting; provided, however, that if, on the conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the issuer's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the second trading day after the date the reporting person is no longer prohibited from trading.

SEC source: 0001493152-26-041416 · ownership.xml · nonDerivative · entry 1

Olmsted Josh F. · CIK 0002153156 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,257

F1 · shares: Represents an award of 2,257 restricted stock units ("RSUs") by the issuer, of which 33% vest on each of September 1, 2027, and September 1, 2028, and 34% vest on September 1, 2029.

F3 · balance_after: Each RSU represents a contingent right to receive one share of the issuer's Class A common stock. The RSUs will convert into shares of common stock upon vesting; provided, however, that if, on the conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the issuer's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the second trading day after the date the reporting person is no longer prohibited from trading.

SEC source: 0001493152-26-041414 · ownership.xml · nonDerivative · entry 2

Cheuiche Godoy Marcelo · CIK 0002037229 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,068

F2 · shares: Represents an award of 1,811 restricted stock units ("RSUs") by the issuer, all of which vest on September 1, 2027.

F3 · balance_after: Each RSU represents a contingent right to receive one share of the issuer's Class A common stock. The RSUs will convert into shares of common stock upon vesting; provided, however, that if, on the conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the issuer's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the second trading day after the date the reporting person is no longer prohibited from trading.

SEC source: 0001493152-26-041414 · ownership.xml · nonDerivative · entry 1

Cheuiche Godoy Marcelo · CIK 0002037229 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,257

F1 · shares: Represents an award of 2,257 restricted stock units ("RSUs") by the issuer, of which 33% vest on each of September 1, 2027, and September 1, 2028, and 34% vest on September 1, 2029.

F3 · balance_after: Each RSU represents a contingent right to receive one share of the issuer's Class A common stock. The RSUs will convert into shares of common stock upon vesting; provided, however, that if, on the conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the issuer's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the second trading day after the date the reporting person is no longer prohibited from trading.

SEC source: 0001493152-26-041412 · ownership.xml · nonDerivative · entry 2

OBRIEN RICHARD T · CIK 0001179997 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,623

F2 · shares: Represents an award of 2,264 restricted stock units ("RSUs") by the issuer, all of which vest on September 1, 2027.

F3 · balance_after: Each RSU represents a contingent right to receive one share of the issuer's Class A common stock. The RSUs will convert into shares of common stock upon vesting; provided, however, that if, on the conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the issuer's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the second trading day after the date the reporting person is no longer prohibited from trading. The recipient has elected to defer the conversion of their RSUs to common stock until the date of their separation from service as a director.

SEC source: 0001493152-26-041412 · ownership.xml · nonDerivative · entry 1

OBRIEN RICHARD T · CIK 0001179997 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,257

F1 · shares: Represents an award of 2,257 restricted stock units ("RSUs") by the issuer, of which 33% vest on each of September 1, 2027, and September 1, 2028, and 34% vest on September 1, 2029.

F3 · balance_after: Each RSU represents a contingent right to receive one share of the issuer's Class A common stock. The RSUs will convert into shares of common stock upon vesting; provided, however, that if, on the conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the issuer's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the second trading day after the date the reporting person is no longer prohibited from trading. The recipient has elected to defer the conversion of their RSUs to common stock until the date of their separation from service as a director.

SEC source: 0001493152-26-040898 · ownership.xml · nonDerivative · entry 1

Jennings Rebecca · CIK 0001952129 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 206,529

F1 · kind: Represents the award of restricted stock units ("RSUs") by the issuer. Subject to the reporting person's continued employment with the issuer, 33% of the RSUs vest on each of August 27, 2027, and August 27, 2028, and 34% vest on August 27, 2029. Each RSU represents a contingent right to receive one share of the issuer's Class A common stock (the "Common Stock"). On the respective vesting date, vested RSUs will convert into shares of Common Stock; provided, however, that if, on that conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the Company's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the 2nd trading day after the date the reporting person is no longer prohibited from such trading.

F1 · shares: Represents the award of restricted stock units ("RSUs") by the issuer. Subject to the reporting person's continued employment with the issuer, 33% of the RSUs vest on each of August 27, 2027, and August 27, 2028, and 34% vest on August 27, 2029. Each RSU represents a contingent right to receive one share of the issuer's Class A common stock (the "Common Stock"). On the respective vesting date, vested RSUs will convert into shares of Common Stock; provided, however, that if, on that conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the Company's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the 2nd trading day after the date the reporting person is no longer prohibited from such trading.

SEC source: 0001493152-26-031551 · ownership.xml · nonDerivative · entry 1

GARRETT DIANE R · CIK 0001170429 · Director · Chair, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 915,366

F1 · kind: Represents the number of Class A Common Stock shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units previously granted.

F1 · acquired: Represents the number of Class A Common Stock shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units previously granted.

SEC source: 0001493152-26-031570 · ownership.xml · nonDerivative · entry 1

Thomas David Brian · CIK 0002025276 · SVP, General Manager

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 163,179

F1 · kind: Represents the number of Class A Common Stock shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units previously granted.

F1 · acquired: Represents the number of Class A Common Stock shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units previously granted.

SEC source: 0001493152-26-031567 · ownership.xml · nonDerivative · entry 1

RIDEOUT STANTON K · CIK 0001192052 · Executive Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 474,464

F1 · kind: Represents the number of Class A Common Stock shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units previously granted.

F1 · acquired: Represents the number of Class A Common Stock shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units previously granted.

SEC source: 0001493152-26-031554 · ownership.xml · nonDerivative · entry 1

Jennings Rebecca · CIK 0001952129 · SVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 197,303

F1 · kind: Represents the number of Class A Common Stock shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units previously granted.

F1 · acquired: Represents the number of Class A Common Stock shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units previously granted.

SEC source: 0001493152-26-029372 · ownership.xml · nonDerivative · entry 1

Thomas David Brian · CIK 0002025276 · SVP, General Manager

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 168,374

F1 · kind: Represents the sale of shares of the issuer's Class A common stock ("Common Stock") at a weighted average price of $26.32 per share.

F1 · shares: Represents the sale of shares of the issuer's Class A common stock ("Common Stock") at a weighted average price of $26.32 per share.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.30 to $26.40 per share, inclusive. The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

F3 · balance_after: Of this amount, 164,573 were unvested RSUs as of June 18, 2026.

SEC source: 0001493152-26-028941 · ownership.xml · nonDerivative · entry 2

Jennings Rebecca · CIK 0001952129 · SVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Indirect · By spouse

Disclosed balance after: 0

SEC source: 0001493152-26-028941 · ownership.xml · nonDerivative · entry 1

Jennings Rebecca · CIK 0001952129 · SVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 202,498

F1 · balance_after: Of this amount, 199,237 were unvested RSUs as of June 16, 2026.

SEC source: 0001493152-26-027788 · ownership.xml · nonDerivative · entry 1

GARRETT DIANE R · CIK 0001170429 · Director · Chair, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 928,352

F1 · kind: Represents the sale of shares of the issuer's Class A common stock ("Common Stock") in order to facilitate the payment of taxes related to vested restricted stock units ("RSUs") held by the reporting person that were converted to shares of Common Stock.

F1 · shares: Represents the sale of shares of the issuer's Class A common stock ("Common Stock") in order to facilitate the payment of taxes related to vested restricted stock units ("RSUs") held by the reporting person that were converted to shares of Common Stock.

F2 · price: The price reported is a weighted average price. The shares were sold at prices ranging from $30.36 to $32. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price

F3 · balance_after: Of this amount, 683,997 were unvested RSUs as of June 8, 2026.

SEC source: 0001493152-26-027790 · ownership.xml · nonDerivative · entry 1

Thomas David Brian · CIK 0002025276 · SVP, General Manager

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 193,374

F1 · kind: Represents the sale of shares of the issuer's Class A common stock ("Common Stock") in order to facilitate the payment of taxes related to vested restricted stock units ("RSUs") held by the reporting person that were converted to shares of Common Stock.

F1 · shares: Represents the sale of shares of the issuer's Class A common stock ("Common Stock") in order to facilitate the payment of taxes related to vested restricted stock units ("RSUs") held by the reporting person that were converted to shares of Common Stock.

F2 · price: The price reported is a weighted average price. The shares were sold at prices ranging from $30.06 to $30.4. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price

F3 · balance_after: Of this amount, 164,573 were unvested RSUs as of June 4, 2025.

SEC source: 0001493152-26-027789 · ownership.xml · nonDerivative · entry 1

RIDEOUT STANTON K · CIK 0001192052 · Executive Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 481,947

F1 · kind: Represents the sale of shares of common stock in order to facilitate the payment of taxes related to vested restricted stock units ("RSUs") held by the reporting person that were converted to shares of common stock.

F1 · shares: Represents the sale of shares of common stock in order to facilitate the payment of taxes related to vested restricted stock units ("RSUs") held by the reporting person that were converted to shares of common stock.

F2 · price: The price reported is a weighted average price. The shares were sold at prices ranging from $30.06 to $30.4. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price

F3 · balance_after: Of this amount, 358,035 were unvested RSUs as of June 8, 2026.

SEC source: 0001493152-26-027784 · ownership.xml · nonDerivative · entry 1

Jennings Rebecca · CIK 0001952129 · SVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 204,494

F1 · kind: Represents the sale of shares of the issuer's Class A common stock ("Common Stock") in order to facilitate the payment of taxes related to vested restricted stock units ("RSUs") held by the reporting person that were converted to shares of Common Stock.

F1 · shares: Represents the sale of shares of the issuer's Class A common stock ("Common Stock") in order to facilitate the payment of taxes related to vested restricted stock units ("RSUs") held by the reporting person that were converted to shares of Common Stock.

F2 · price: The price reported is a weighted average price. The shares were sold at prices ranging from $29.9 to $30.44. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price.

F3 · balance_after: Of this amount, 199,104 were unvested RSUs as of June 8, 2026.

SEC source: 0001213900-26-048048 · ownership.xml · nonDerivative · entry 1

Sprott Eric · CIK 0001491714 · 10% owner

2176423 Ontario Ltd. · CIK 0001925668 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Sprott Mining Inc.

Disclosed balance after: 37,403,704

F1 · ownership.nature: These securities are owned directly by Sprott Mining Inc. ("Sprott Mining"), a wholly-owned subsidiary of 2176423 Ontario Ltd. Eric Sprott controls 2176423 Ontario Ltd. and has the power to direct the voting and disposition of Class A common stock held by Sprott Mining through his ownership interests in 2176423 Ontario Ltd. All of the Reporting Persons are a "group" for purposes of Section 13(d)of the Exchange Act.

SEC source: 0001493152-26-023260 · ownership.xml · nonDerivative · entry 1

Colby Eric B · CIK 0002134723 · EVP Corporate Development & IR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,482

F1 · shares: Represents the award of restricted stock units ("RSUs"). Subject to the reporting person's continued employment with the issuer, the RSUs will vest as follows: 33% on April 16, 2027, 33% on April 16, 2028, and 34% on April 16, 2029. Each RSU represents a contingent right to receive one share of the issuer's Class A common stock (the "Common Stock"). On the respective vesting date, vested RSUs will convert into shares of Common Stock; provided, however, that if, on that conversion date, the reporting person is prohibited from trading in the issuer's securities pursuant to applicable securities laws or the Company's policies, the conversion date shall be, in the determination of the Compensation Committee of the issuer's Board of Directors, the 2nd trading day after the date the reporting person is no longer prohibited from such trading.

SEC source: 0001213900-26-042545 · ownership.xml · nonDerivative · entry 2

Sprott Eric · CIK 0001491714 · 10% owner

2176423 Ontario Ltd. · CIK 0001925668 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Sprott Mining Inc.

Disclosed balance after: 37,303,704

F1 · ownership.nature: These securities are owned directly by Sprott Mining Inc. ("Sprott Mining"), a wholly-owned subsidiary of 2176423 Ontario Ltd. Eric Sprott controls 2176423 Ontario Ltd. and has the power to direct the voting and disposition of Class A common stock held by Sprott Mining through his ownership interests in 2176423 Ontario Ltd. All of the Reporting Persons are a "group" for purposes of Section 13(d)of the Exchange Act.

SEC source: 0001213900-26-042545 · ownership.xml · nonDerivative · entry 1

Sprott Eric · CIK 0001491714 · 10% owner

2176423 Ontario Ltd. · CIK 0001925668 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Sprott Mining Inc.

Disclosed balance after: 37,203,704

F1 · ownership.nature: These securities are owned directly by Sprott Mining Inc. ("Sprott Mining"), a wholly-owned subsidiary of 2176423 Ontario Ltd. Eric Sprott controls 2176423 Ontario Ltd. and has the power to direct the voting and disposition of Class A common stock held by Sprott Mining through his ownership interests in 2176423 Ontario Ltd. All of the Reporting Persons are a "group" for purposes of Section 13(d)of the Exchange Act.

SEC source: 0001493152-26-014765 · ownership.xml · nonDerivative · entry 1

LANG STEPHEN A · CIK 0001263105 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,238

SEC source: 0001493152-26-010646 · ownership.xml · nonDerivative · entry 1

Jennings Rebecca · CIK 0001952129 · SVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 215,794

F1 · shares: The Reporting Person sold 9,071 shares of Class A Common Stock on the open market with a weighted average sales price of $39.332.

SEC source: 0001493152-26-009743 · ownership.xml · nonDerivative · entry 1

GARRETT DIANE R · CIK 0001170429 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 949,902

F1 · shares: Represents the award of restricted stock units ("RSUs") by the issuer. Subject to the reporting person's continued employment with the issuer, 33% of the RSUs vest on each of March 9, 2027 and March 9, 2028 and 34% vest on March 9, 2029. Each RSU represents a contingent right to receive one share of the issuer's Class A common stock (the "Common Stock"). On the respective vesting date, vested RSUs will convert into shares of Common Stock on a one-to-one basis.

SEC source: 0001493152-26-009744 · ownership.xml · nonDerivative · entry 1

Thomas David Brian · CIK 0002025276 · SVP, General Manager

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 202,374

F1 · shares: Represents the award of restricted stock units ("RSUs") by the issuer. Subject to the reporting person's continued employment with the issuer, 33% of the RSUs vest on each of March 9, 2027 and March 9, 2028 and 34% vest on March 9, 2029. Each RSU represents a contingent right to receive one share of the issuer's Class A common stock (the "Common Stock"). On the respective vesting date, vested RSUs will convert into shares of Common Stock on a one-to-one basis.

SEC source: 0001493152-26-009746 · ownership.xml · nonDerivative · entry 1

Harrison Michael James · CIK 0001814564 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,044

F1 · shares: The reported transaction relates to the reporting person's receipt of 3,062 restricted stock units as the reporting person's 2026 annual equity award grant for service as a non-employee member of the issuer's Board of Directors, which will vest on March 9, 2027, subject to the reporting person's continued service as a director of the issuer.

SEC source: 0001493152-26-009747 · ownership.xml · nonDerivative · entry 1

LANG STEPHEN A · CIK 0001263105 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,238

F1 · shares: The reported transaction relates to the reporting person's receipt of 3,062 restricted stock units as the reporting person's 2026 annual equity award grant for service as a non-employee member of the issuer's Board of Directors, which will vest on March 9, 2027, subject to the reporting person's continued service as a director of the issuer.

SEC source: 0001493152-26-009742 · ownership.xml · nonDerivative · entry 1

RIDEOUT STANTON K · CIK 0001192052 · Executive Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 498,447

F1 · shares: Represents the award of restricted stock units ("RSUs") by the issuer. Subject to the reporting person's continued employment with the issuer, 33% of the RSUs vest on each of March 9, 2027 and March 9, 2028 and 34% vest on March 9, 2029. Each RSU represents a contingent right to receive one share of the issuer's Class A common stock (the "Common Stock"). On the respective vesting date, vested RSUs will convert into shares of Common Stock on a one-to-one basis.

SEC source: 0001493152-26-009748 · ownership.xml · nonDerivative · entry 1

WENG THOMAS S. · CIK 0001603617 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,671

F1 · shares: The reported transaction relates to the reporting person's receipt of 3,062 restricted stock units as the reporting person's 2026 annual equity award grant for service as a non-employee member of the issuer's Board of Directors, which will vest on March 9, 2027, subject to the reporting person's continued service as a director of the issuer.

SEC source: 0001493152-26-009749 · ownership.xml · nonDerivative · entry 1

Goodman Sean D. · CIK 0001663623 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,359

F1 · shares: The reported transaction relates to the reporting person's receipt of 5,359 restricted stock units ("RSUs") as (i) the reporting person's initial equity award grant for service as a non-employee member of the issuer's Board of Directors (2,297 RSUs), of which 765, 766 and 766 will vest on March 9, 2027, March 9, 2028 and March 9, 2029, respectively, and (ii) as the reporting person's 2026 annual equity award grant for service as a non-employee member of the issuer's Board of Directors (3,062 RSUs), which will vest on March 9, 2027, in each case, subject to the reporting person's continued service as a director of the issuer.

SEC source: 0001493152-26-009745 · ownership.xml · nonDerivative · entry 1

Jennings Rebecca · CIK 0001952129 · SVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 224,865

F1 · shares: Represents the award of restricted stock units ("RSUs") by the issuer. Subject to the reporting person's continued employment with the issuer, 33% of the RSUs vest on each of March 9, 2027 and March 9, 2028 and 34% vest on March 9, 2029. Each RSU represents a contingent right to receive one share of the issuer's Class A common stock (the "Common Stock"). On the respective vesting date, vested RSUs will convert into shares of Common Stock on a one-to-one basis.

SEC source: 0001493152-26-010555 · ownership.xml · nonDerivative · entry 1

Naccarati David C · CIK 0001307983 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,963

F1 · shares: The reported transaction relates to the reporting person's receipt of 3,062 restricted stock units as the reporting person's 2026 annual equity award grant for service as a non-employee member of the issuer's Board of Directors, which will vest on March 9, 2027, subject to the reporting person's continued service as a director of the issuer.

SEC source: 0001493152-26-018812 · ownership.xml · nonDerivative · entry 1

WENG THOMAS S. · CIK 0001603617 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,840

F1 · shares: The amount in this column has been corrected from the amount reported in the reporting person's Form 4 dated March 11, 2026 to reflect the correct number of restricted stock units that were granted.

F2 · shares: The reported transaction relates to the reporting person's receipt of 5,231 restricted stock units as the reporting person's 2026 annual equity award grant for service as a non-employee member of the issuer's Board of Directors, which will vest on March 9, 2027, subject to the reporting person's continued service as a director of the issuer.

F1 · balance_after: The amount in this column has been corrected from the amount reported in the reporting person's Form 4 dated March 11, 2026 to reflect the correct number of restricted stock units that were granted.

SEC source: 0001213900-26-024658 · ownership.xml · nonDerivative · entry 1

Sprott Eric · CIK 0001491714 · 10% owner

2176423 Ontario Ltd. · CIK 0001925668 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Sprott Mining Inc.

Disclosed balance after: 37,103,704

F1 · ownership.nature: These securities are owned directly by Sprott Mining Inc. ("Sprott Mining"), a wholly-owned subsidiary of 2176423 Ontario Ltd. Eric Sprott controls 2176423 Ontario Ltd. and has the power to direct the voting and disposition of Class A common stock held by Sprott Mining through his ownership interests in 2176423 Ontario Ltd. All of the Reporting Persons are a "group" for purposes of Section 13(d)of the Exchange Act.

SEC source: 0001213900-26-024116 · ownership.xml · nonDerivative · entry 1

Sprott Eric · CIK 0001491714 · 10% owner

2176423 Ontario Ltd. · CIK 0001925668 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Sprott Mining Inc.

Disclosed balance after: 37,003,704

F1 · ownership.nature: These securities are owned directly by Sprott Mining Inc. ("Sprott Mining"), a wholly-owned subsidiary of 2176423 Ontario Ltd. Eric Sprott controls 2176423 Ontario Ltd. and has the power to direct the voting and disposition of Class A common stock held by Sprott Mining through his ownership interests in 2176423 Ontario Ltd. All of the Reporting Persons are a "group" for purposes of Section 13(d)of the Exchange Act.

SEC source: 0001213900-26-019432 · ownership.xml · nonDerivative · entry 1

Sprott Eric · CIK 0001491714 · 10% owner

2176423 Ontario Ltd. · CIK 0001925668 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Sprott Mining Inc.

Disclosed balance after: 36,903,704

F1 · ownership.nature: These securities are owned directly by Sprott Mining Inc. ("Sprott Mining"), a wholly-owned subsidiary of 2176423 Ontario Ltd. Eric Sprott controls 2176423 Ontario Ltd. and has the power to direct the voting and disposition of Class A common stock held by Sprott Mining through his ownership interests in 2176423 Ontario Ltd. All of the Reporting Persons are a "group" for purposes of Section 13(d) of the Exchange Act.

SEC source: 0001213900-26-010449 · ownership.xml · nonDerivative · entry 1

Sprott Eric · CIK 0001491714 · 10% owner

2176423 Ontario Ltd. · CIK 0001925668 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Sprott Mining Inc.

Disclosed balance after: 36,753,704

F1 · ownership.nature: These securities are owned directly by Sprott Mining Inc. ("Sprott Mining"), a wholly-owned subsidiary of 2176423 Ontario Ltd. Eric Sprott controls 2176423 Ontario Ltd. and has the power to direct the voting and disposition of Class A common stock held by Sprott Mining through his ownership interests in 2176423 Ontario Ltd. All of the Reporting Persons are a "group" for purposes of Section 13(d) of the Exchange Act.

SEC source: 0001493152-26-004303 · ownership.xml · nonDerivative · entry 2

GARRETT DIANE R · CIK 0001170429 · Director · PRESIDENT & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 919,701

SEC source: 0001493152-26-004303 · ownership.xml · nonDerivative · entry 1

GARRETT DIANE R · CIK 0001170429 · Director · PRESIDENT & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 951,511

F1 · kind: Represents an award of restricted stock units ("RSUs") by the issuer. Of the RSUs, 88,035 were vested as of January 27, 2026 (the "Date of Grant"). Generally subject to the reporting person's continued employment with the issuer, 238,800 of the RSUs will vest on the one-year anniversary of the Date of Grant, 195,275 of the RSUs will vest on the 18-month anniversary of the Date of Grant, and 96,350 of the RSUs will vest on the two-year anniversary of the Date of Grant. RSUs convert into shares of Class A Common Stock on a one-for-one basis.

F1 · shares: Represents an award of restricted stock units ("RSUs") by the issuer. Of the RSUs, 88,035 were vested as of January 27, 2026 (the "Date of Grant"). Generally subject to the reporting person's continued employment with the issuer, 238,800 of the RSUs will vest on the one-year anniversary of the Date of Grant, 195,275 of the RSUs will vest on the 18-month anniversary of the Date of Grant, and 96,350 of the RSUs will vest on the two-year anniversary of the Date of Grant. RSUs convert into shares of Class A Common Stock on a one-for-one basis.

F2 · balance_after: Of this amount, 703,959 were unvested RSUs as of January 29, 2026.

SEC source: 0001493152-26-004305 · ownership.xml · nonDerivative · entry 2

Thomas David Brian · CIK 0002025276 · SVP, GENERAL MANAGER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 193,857

SEC source: 0001493152-26-004305 · ownership.xml · nonDerivative · entry 1

Thomas David Brian · CIK 0002025276 · SVP, GENERAL MANAGER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 198,236

F1 · kind: Represents an award of restricted stock units ("RSUs") by the issuer. Of the RSUs, 17,306 were vested as of January 27, 2026 (the "Date of Grant"). Generally subject to the reporting person's continued employment with the issuer, 45,504 of the RSUs will vest on the one-year anniversary of the Date of Grant, 35,370 of the RSUs will vest on the 18-month anniversary of the Date of Grant, and 18,986 of the RSUs will vest on the two-year anniversary of the Date of Grant. RSUs convert into shares of Class A Common Stock on a one-for-one basis.

F1 · shares: Represents an award of restricted stock units ("RSUs") by the issuer. Of the RSUs, 17,306 were vested as of January 27, 2026 (the "Date of Grant"). Generally subject to the reporting person's continued employment with the issuer, 45,504 of the RSUs will vest on the one-year anniversary of the Date of Grant, 35,370 of the RSUs will vest on the 18-month anniversary of the Date of Grant, and 18,986 of the RSUs will vest on the two-year anniversary of the Date of Grant. RSUs convert into shares of Class A Common Stock on a one-for-one basis.

F2 · balance_after: Of this amount, 174,327 were unvested RSUs as of January 29, 2026.

SEC source: 0001493152-26-004310 · ownership.xml · nonDerivative · entry 2

RIDEOUT STANTON K · CIK 0001192052 · EXECUTIVE VICE PRESIDENT & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 484,194

SEC source: 0001493152-26-004310 · ownership.xml · nonDerivative · entry 1

RIDEOUT STANTON K · CIK 0001192052 · EXECUTIVE VICE PRESIDENT & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 501,776

F1 · kind: Represents an award of restricted stock units ("RSUs") by the issuer. Of the RSUs, 44,979 were vested as of January 27, 2026 (the "Date of Grant"). Generally subject to the reporting person's continued employment with the issuer, 122,953 of the RSUs will vest on the one-year anniversary of the Date of Grant, 98,608 of the RSUs will vest on the 18-month anniversary of the Date of Grant, and 52,250 of the RSUs will vest on the two-year anniversary of the Date of Grant. RSUs convert into shares of Class A Common Stock on a one-for-one basis.

F1 · shares: Represents an award of restricted stock units ("RSUs") by the issuer. Of the RSUs, 44,979 were vested as of January 27, 2026 (the "Date of Grant"). Generally subject to the reporting person's continued employment with the issuer, 122,953 of the RSUs will vest on the one-year anniversary of the Date of Grant, 98,608 of the RSUs will vest on the 18-month anniversary of the Date of Grant, and 52,250 of the RSUs will vest on the two-year anniversary of the Date of Grant. RSUs convert into shares of Class A Common Stock on a one-for-one basis.

F2 · balance_after: Of this amount, 373,978 were unvested RSUs as of January 29, 2026.

SEC source: 0001493152-26-004308 · ownership.xml · nonDerivative · entry 2

Jennings Rebecca · CIK 0001952129 · SVP & GENERAL COUNSEL

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 216,037

SEC source: 0001493152-26-004308 · ownership.xml · nonDerivative · entry 1

Jennings Rebecca · CIK 0001952129 · SVP & GENERAL COUNSEL

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 219,909

F1 · kind: Represents an award of restricted stock units ("RSUs") by the issuer. Of the RSUs, 15,228 were vested as of January 27, 2026 (the "Date of Grant"). Generally subject to the reporting person's continued employment with the issuer, 45,563 of the RSUs will vest on the one-year anniversary of the Date of Grant, 38,478 of the RSUs will vest on the 18-month anniversary of the Date of Grant, and 20,616 of the RSUs will vest on the two-year anniversary of the Date of Grant. RSUs convert into shares of Class A Common Stock on a one-for-one basis.

F1 · shares: Represents an award of restricted stock units ("RSUs") by the issuer. Of the RSUs, 15,228 were vested as of January 27, 2026 (the "Date of Grant"). Generally subject to the reporting person's continued employment with the issuer, 45,563 of the RSUs will vest on the one-year anniversary of the Date of Grant, 38,478 of the RSUs will vest on the 18-month anniversary of the Date of Grant, and 20,616 of the RSUs will vest on the two-year anniversary of the Date of Grant. RSUs convert into shares of Class A Common Stock on a one-for-one basis.

F2 · balance_after: Of this amount, 214,791 were unvested RSUs as of January 29, 2026.

SEC source: 0001493152-26-009737 · ownership.xml · nonDerivative · entry 1

GARRETT DIANE R · CIK 0001170429 · Director · PRESIDENT & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 916,730

F1 · shares: This amendment corrects the amount of securities withheld by the issuer to satisfy tax withholding.

SEC source: 0001493152-26-009740 · ownership.xml · nonDerivative · entry 1

Thomas David Brian · CIK 0002025276 · SVP, GENERAL MANAGER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 191,261

F1 · shares: This amendment corrects the amount of securities withheld by the issuer to satisfy tax withholding.