FEAM

SEC source: 0001562180-25-005111 · primarydocument.xml · nonDerivative · entry 2

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,633

F1 · shares: The number of securities reported herein have been adjusted to reflect a 1-for-23 reverse stock split effected by the Issuer on February 14, 2025.

F3 · shares: Represents the number of shares of common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the vesting of RSUs.

F1 · balance_after: The number of securities reported herein have been adjusted to reflect a 1-for-23 reverse stock split effected by the Issuer on February 14, 2025.

SEC source: 0001562180-25-005200 · primarydocument.xml · derivative · entry 5

HEBERT CURTIS L JR · CIK 0001168534 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,316

Underlying: Common Stock · 5,316 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on June 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2025.

F2 · derivative.expiration_date: RSUs granted on June 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2025.

SEC source: 0001562180-25-005199 · primarydocument.xml · derivative · entry 7

Jones Bryn Llywelyn · CIK 0002026033 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,316

Underlying: Common Stock · 5,316 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F3 · derivative.exercise_date: RSUs granted on June 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2025.

F3 · derivative.expiration_date: RSUs granted on June 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2025.

SEC source: 0001562180-25-005198 · primarydocument.xml · derivative · entry 9

Dick Barry · CIK 0002021913 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,202

Underlying: Common Stock · 6,202 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F3 · derivative.exercise_date: RSUs granted on June 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2025.

F3 · derivative.expiration_date: RSUs granted on June 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2025.

SEC source: 0001562180-25-005197 · primarydocument.xml · derivative · entry 9

vant Hoff Graham · CIK 0001829340 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,384

Underlying: Common Stock · 7,384 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F3 · derivative.exercise_date: RSUs granted on June 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2025.

F3 · derivative.expiration_date: RSUs granted on June 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2025.

SEC source: 0001562180-25-005111 · primarydocument.xml · derivative · entry 3

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 48 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 restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · shares: The number of securities reported herein have been adjusted to reflect a 1-for-23 reverse stock split effected by the Issuer on February 14, 2025.

F4 · derivative.exercise_date: RSUs granted on June 29, 2022 pursuant to the Issuer's 2022 Equity Compensation Plan (the "Plan"). 40% vested on the second anniversary of the grant date and the remaining 60% vested on the third anniversary of the grant date.

F4 · derivative.expiration_date: RSUs granted on June 29, 2022 pursuant to the Issuer's 2022 Equity Compensation Plan (the "Plan"). 40% vested on the second anniversary of the grant date and the remaining 60% vested on the third anniversary of the grant date.

F1 · derivative.underlying_shares: The number of securities reported herein have been adjusted to reflect a 1-for-23 reverse stock split effected by the Issuer on February 14, 2025.

SEC source: 0001562180-25-005111 · primarydocument.xml · nonDerivative · entry 1

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,653

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: The number of securities reported herein have been adjusted to reflect a 1-for-23 reverse stock split effected by the Issuer on February 14, 2025.

F2 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · balance_after: The number of securities reported herein have been adjusted to reflect a 1-for-23 reverse stock split effected by the Issuer on February 14, 2025.

SEC source: 0001562180-25-004131 · primarydocument.xml · derivative · entry 1

Malm Joshua · CIK 0002025901 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,257

Underlying: Common Stock · 91,257 shares

Expires 2029-05-21

F1 · derivative.exercise_date: The options shall vest and become exercisable on the third anniversary of the grant date, subject to the Reporting Person's continued service through the vesting date.

SEC source: 0001562180-25-004132 · primarydocument.xml · derivative · entry 1

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 146,012

Underlying: Common Stock · 146,012 shares

Expires 2029-05-21

F1 · derivative.exercise_date: The options shall vest and become exercisable on the third anniversary of the grant date, subject to the Reporting Person's continued service through the vesting date.

SEC source: 0001562180-25-002806 · primarydocument.xml · derivative · entry 1

HEBERT CURTIS L JR · CIK 0001168534 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 512

Underlying: Common Stock · 512 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on March 31, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

F2 · derivative.expiration_date: RSUs granted on March 31, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

SEC source: 0001562180-25-002808 · primarydocument.xml · derivative · entry 1

Jones Bryn Llywelyn · CIK 0002026033 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,578

Underlying: Common Stock · 3,578 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on March 31, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

F2 · derivative.expiration_date: RSUs granted on March 31, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

SEC source: 0001562180-25-002807 · primarydocument.xml · derivative · entry 1

Dick Barry · CIK 0002021913 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,918

Underlying: Common Stock · 3,918 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on March 31, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

F2 · derivative.expiration_date: RSUs granted on March 31, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

SEC source: 0001562180-25-002805 · primarydocument.xml · derivative · entry 1

vant Hoff Graham · CIK 0001829340 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,770

Underlying: Common Stock · 4,770 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on March 31, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

F2 · derivative.expiration_date: RSUs granted on March 31, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

SEC source: 0000950170-25-039401 · ownership.xml · derivative · entry 2

BEP Special Situations IV LLC · CIK 0001942792 · Director · 10% owner

Bluescape Energy Partners IV GP LLC · CIK 0001942819 · Director · 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: 2,816,346

Underlying: Common Stock · 2,816,346 shares

Expires not disclosed

F2 · price: On March 13, 2025, pursuant to the January 14, 2025 Subscription Agreement, Bluescape acquired shares of common stock in a private placement transaction at a price of $3.5507 per share and warrants to acquire shares of common stock for no additional consideration.

F3 · derivative.exercise_date: On March 13, 2025, Bluescape acquired warrants to purchase shares of common stock of the issuer in a private placement transaction. The warrants are exercisable on or after the date of issuance and will expire on March 13, 2026. The exercise price per share of common stock under the warrants is $3.5507.

F3 · derivative.expiration_date: On March 13, 2025, Bluescape acquired warrants to purchase shares of common stock of the issuer in a private placement transaction. The warrants are exercisable on or after the date of issuance and will expire on March 13, 2026. The exercise price per share of common stock under the warrants is $3.5507.

F1 · ownership.direct: Bluescape Energy Partners IV GP LLC ("Bluescape GP") is the general partner of Bluescape Energy Recapitalization and Restructuring Fund IV LP, which wholly owns BEP Special Situations IV LLC ("Bluescape", together with Bluescape GP, the "Reporting Persons"). As such, Bluescape GP may be deemed to have beneficial ownership of the securities held by Bluescape. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000950170-25-039401 · ownership.xml · nonDerivative · entry 1

BEP Special Situations IV LLC · CIK 0001942792 · Director · 10% owner

Bluescape Energy Partners IV GP LLC · CIK 0001942819 · Director · 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: 7,497,349

F2 · price: On March 13, 2025, pursuant to the January 14, 2025 Subscription Agreement, Bluescape acquired shares of common stock in a private placement transaction at a price of $3.5507 per share and warrants to acquire shares of common stock for no additional consideration.

F1 · ownership.direct: Bluescape Energy Partners IV GP LLC ("Bluescape GP") is the general partner of Bluescape Energy Recapitalization and Restructuring Fund IV LP, which wholly owns BEP Special Situations IV LLC ("Bluescape", together with Bluescape GP, the "Reporting Persons"). As such, Bluescape GP may be deemed to have beneficial ownership of the securities held by Bluescape. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0001493152-25-010593 · ownership.xml · derivative · entry 2

Ascend Global Investment Fund SPC - Strategic Segregated Portfolio · CIK 0002001144 · Director · 10% owner

Meridian Investments Corp · CIK 0002009685 · 10% owner

Ascend Capital Advisors (S) Pte. Ltd. · CIK 0002009683 · 10% owner

Ascend Financial Holdings Ltd · CIK 0002009892 · 10% owner

Susanto Halim · CIK 0002001327 · 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: 2,816,346

Underlying: Common Stock · 2,816,346 shares

Expires not disclosed

F1 · price: On March 13, 2025, Ascend Global Investment Fund SPC ("Ascend Global") and Meridian Investments Corporation ("Meridian") each acquired 352,043 shares of Common Stock and warrants to purchase up to 1,408,173 shares of Common Stock pursuant to a Subscription Agreement dated January 14, 2025 among the Issuer, BEP Special Situations IV LLC, Ascend Global and Meridian.

F3 · derivative.exercise_date: The warrants are immediately exercisable and expire on March 13, 2026. The exercise price per share of Common Stock under the warrants is $3.5507.

F3 · derivative.expiration_date: The warrants are immediately exercisable and expire on March 13, 2026. The exercise price per share of Common Stock under the warrants is $3.5507.

F2 · ownership.nature: Ascend Global is the record holder of 3,981,972 shares of Common Stock and Meridian is the record holder of 3,748,674 shares of Common Stock. Ascend Global is the sole shareholder of Meridian, and may be deemed to share beneficial ownership of the securities held of record by Meridian. Ascend Financial Holdings Limited is the sole shareholder of Ascend Capital Advisors (S) Pte. Ltd., which is the sole partner of Ascend Global. As a result, each of the foregoing entities may be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global. By virtue of his control of Ascend Financial, Mr. Susanto may also be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global under Section 13(d) of the Securities Exchange Act of 1934 (as amended) and the rules promulgated by the U.S. Securities and Exchange Commission thereunder. Mr. Susanto disclaims beneficial ownership of the securities beneficially owned by Ascend Global.

SEC source: 0001493152-25-010593 · ownership.xml · nonDerivative · entry 1

Ascend Global Investment Fund SPC - Strategic Segregated Portfolio · CIK 0002001144 · Director · 10% owner

Meridian Investments Corp · CIK 0002009685 · 10% owner

Ascend Capital Advisors (S) Pte. Ltd. · CIK 0002009683 · 10% owner

Ascend Financial Holdings Ltd · CIK 0002009892 · 10% owner

Susanto Halim · CIK 0002001327 · 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: 7,730,646

F1 · price: On March 13, 2025, Ascend Global Investment Fund SPC ("Ascend Global") and Meridian Investments Corporation ("Meridian") each acquired 352,043 shares of Common Stock and warrants to purchase up to 1,408,173 shares of Common Stock pursuant to a Subscription Agreement dated January 14, 2025 among the Issuer, BEP Special Situations IV LLC, Ascend Global and Meridian.

F2 · ownership.nature: Ascend Global is the record holder of 3,981,972 shares of Common Stock and Meridian is the record holder of 3,748,674 shares of Common Stock. Ascend Global is the sole shareholder of Meridian, and may be deemed to share beneficial ownership of the securities held of record by Meridian. Ascend Financial Holdings Limited is the sole shareholder of Ascend Capital Advisors (S) Pte. Ltd., which is the sole partner of Ascend Global. As a result, each of the foregoing entities may be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global. By virtue of his control of Ascend Financial, Mr. Susanto may also be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global under Section 13(d) of the Securities Exchange Act of 1934 (as amended) and the rules promulgated by the U.S. Securities and Exchange Commission thereunder. Mr. Susanto disclaims beneficial ownership of the securities beneficially owned by Ascend Global.

SEC source: 0001493152-25-009563 · ownership.xml · derivative · entry 2

Ascend Global Investment Fund SPC - Strategic Segregated Portfolio · CIK 0002001144 · Director · 10% owner

Meridian Investments Corp · CIK 0002009685 · 10% owner

Ascend Capital Advisors (S) Pte. Ltd. · CIK 0002009683 · 10% owner

Ascend Financial Holdings Ltd · CIK 0002009892 · 10% owner

Susanto Halim · CIK 0002001327 · 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 · 6,793,262 shares

Expires 2028-08-15

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 · derivative.exercise_price: On March 5, 2025, the Convertible Notes were exchanged for shares of Common Stock pursuant to an Exchange Agreement dated January 14, 2025 among the Issuer, BEP Special Situations IV LLC, Ascend Global Investment Fund SPC ("Ascend Global"), and Meridian Investments Corporation ("Meridian").

F1 · price: On March 5, 2025, the Convertible Notes were exchanged for shares of Common Stock pursuant to an Exchange Agreement dated January 14, 2025 among the Issuer, BEP Special Situations IV LLC, Ascend Global Investment Fund SPC ("Ascend Global"), and Meridian Investments Corporation ("Meridian").

F1 · derivative.exercise_date: On March 5, 2025, the Convertible Notes were exchanged for shares of Common Stock pursuant to an Exchange Agreement dated January 14, 2025 among the Issuer, BEP Special Situations IV LLC, Ascend Global Investment Fund SPC ("Ascend Global"), and Meridian Investments Corporation ("Meridian").

F3 · ownership.nature: Ascend Global is the record holder of 3,629,929 shares of Common Stock and Meridian is the record holder of 3,396,631 shares of Common Stock. Ascend Global is the sole shareholder of Meridian, and may be deemed to share beneficial ownership of the securities held of record by Meridian. Ascend Financial Holdings Limited is the sole shareholder of Ascend Capital Advisors (S) Pte. Ltd., which is the sole partner of Ascend Global. As a result, each of the foregoing entities may be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global. By virtue of his control of Ascend Financial, Mr. Susanto may also be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global under Section 13(d) of the Securities Exchange Act of 1934 (as amended) and the rules promulgated by the U.S. Securities and Exchange Commission thereunder. Mr. Susanto disclaims beneficial ownership of the securities beneficially owned by Ascend Global.

SEC source: 0001493152-25-009563 · ownership.xml · nonDerivative · entry 1

Ascend Global Investment Fund SPC - Strategic Segregated Portfolio · CIK 0002001144 · Director · 10% owner

Meridian Investments Corp · CIK 0002009685 · 10% owner

Ascend Capital Advisors (S) Pte. Ltd. · CIK 0002009683 · 10% owner

Ascend Financial Holdings Ltd · CIK 0002009892 · 10% owner

Susanto Halim · CIK 0002001327 · 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: 7,026,560

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: On March 5, 2025, the Convertible Notes were exchanged for shares of Common Stock pursuant to an Exchange Agreement dated January 14, 2025 among the Issuer, BEP Special Situations IV LLC, Ascend Global Investment Fund SPC ("Ascend Global"), and Meridian Investments Corporation ("Meridian").

F2 · balance_after: All information in this Form 4 reflects the impact of the Issuer's 1-for-23 reverse stock split effected on February 14, 2025.

F3 · ownership.nature: Ascend Global is the record holder of 3,629,929 shares of Common Stock and Meridian is the record holder of 3,396,631 shares of Common Stock. Ascend Global is the sole shareholder of Meridian, and may be deemed to share beneficial ownership of the securities held of record by Meridian. Ascend Financial Holdings Limited is the sole shareholder of Ascend Capital Advisors (S) Pte. Ltd., which is the sole partner of Ascend Global. As a result, each of the foregoing entities may be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global. By virtue of his control of Ascend Financial, Mr. Susanto may also be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global under Section 13(d) of the Securities Exchange Act of 1934 (as amended) and the rules promulgated by the U.S. Securities and Exchange Commission thereunder. Mr. Susanto disclaims beneficial ownership of the securities beneficially owned by Ascend Global.

SEC source: 0001562180-25-000444 · primarydocument.xml · derivative · entry 1

Jones Bryn Llywelyn · CIK 0002026033 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,465

Underlying: Common Stock · 47,465 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on January 21, 2025 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

F2 · derivative.expiration_date: RSUs granted on January 21, 2025 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

SEC source: 0001562180-25-000442 · primarydocument.xml · derivative · entry 1

Dick Barry · CIK 0002021913 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,709

Underlying: Common Stock · 30,709 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on January 21, 2025 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

F2 · derivative.expiration_date: RSUs granted on January 21, 2025 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

SEC source: 0001562180-25-000443 · primarydocument.xml · derivative · entry 1

vant Hoff Graham · CIK 0001829340 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,175

Underlying: Common Stock · 67,175 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on January 21, 2025 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

F2 · derivative.expiration_date: RSUs granted on January 21, 2025 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

SEC source: 0000950170-25-005934 · ownership.xml · derivative · entry 1

BEP Special Situations IV LLC · CIK 0001942792 · 10% owner

Bluescape Energy Partners IV GP LLC · CIK 0001942819 · 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: 53,109,194

Underlying: Common Stock · 12,161,865 shares

Expires not disclosed

F1 · derivative.exercise_price: The reported securities represent $2,500,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 3424.9375 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · derivative.exercise_price: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 12,161,865 and 40,947,329 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · shares: The reported securities represent $2,500,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 3424.9375 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · shares: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 12,161,865 and 40,947,329 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · price: The reported securities represent $2,500,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 3424.9375 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · price: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 12,161,865 and 40,947,329 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · derivative.exercise_date: The reported securities represent $2,500,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 3424.9375 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · derivative.exercise_date: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 12,161,865 and 40,947,329 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · derivative.expiration_date: The reported securities represent $2,500,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 3424.9375 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · derivative.expiration_date: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 12,161,865 and 40,947,329 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · derivative.underlying_shares: The reported securities represent $2,500,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 3424.9375 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · derivative.underlying_shares: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 12,161,865 and 40,947,329 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · balance_after: The reported securities represent $2,500,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 3424.9375 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · balance_after: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 12,161,865 and 40,947,329 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F3 · ownership.direct: Bluescape Energy Partners IV GP LLC ("Bluescape GP" and, together with Bluescape, the "Reporting Persons") is the general partner of Bluescape Energy Recapitalization and Restructuring Fund IV LP, which wholly owns Bluescape. As such, Bluescape GP may be deemed to have beneficial ownership of the securities held by Bluescape. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0001493152-25-002618 · ownership.xml · derivative · entry 1

Ascend Global Investment Fund SPC - Strategic Segregated Portfolio · CIK 0002001144 · Director · 10% owner

Meridian Investments Corp · CIK 0002009685 · 10% owner

Ascend Capital Advisors (S) Pte. Ltd. · CIK 0002009683 · 10% owner

Ascend Financial Holdings Ltd · CIK 0002009892 · 10% owner

Susanto Halim · CIK 0002001327 · 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: 53,109,194

Underlying: Common Stock · 12,161,865 shares

Expires 2028-08-15

F1 · derivative.exercise_price: All or any portion of the Issuer's 4.50% senior secured convertible notes (the "Convertible Notes") may be converted at the holder's election at any time prior to the close of business on the business day immediately preceding the maturity date.

F1 · derivative.exercise_date: All or any portion of the Issuer's 4.50% senior secured convertible notes (the "Convertible Notes") may be converted at the holder's election at any time prior to the close of business on the business day immediately preceding the maturity date.

F1 · derivative.underlying_shares: All or any portion of the Issuer's 4.50% senior secured convertible notes (the "Convertible Notes") may be converted at the holder's election at any time prior to the close of business on the business day immediately preceding the maturity date.

F2 · ownership.nature: Meridian Investments Corporation ("Meridian") is the record holder of Convertible Notes that are currently convertible into 26,554,597 shares of Common Stock issuable upon conversion of the outstanding principal of, and paid-in-kind interest accrued on, the Convertible Notes, assuming all interest is paid in-kind until the maturity date. In addition, Ascend Global Investment Fund SPC for and on behalf of Strategic SP ("Ascend Global") is the record holder of Convertible Notes that are currently convertible into 26,554,597 shares of Common Stock issuable upon conversion of the outstanding principal of, and paid-in-kind interest accrued on, the Convertible Notes, assuming all interest is paid in-kind until the maturity date.

F3 · ownership.nature: Ascend Global is the sole shareholder of Meridian, and as a result may be deemed to share beneficial ownership of the securities held of record by Meridian. Ascend Financial Holdings Limited is the sole shareholder of Ascend Capital Advisors (S) Pte. Ltd., which is the sole partner of Ascend Global. As a result, each of the foregoing entities may be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global. By virtue of his control of Ascend Financial, Mr. Susanto may also be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global under Section 13(d) of the Securities Exchange Act of 1934 (as amended) and the rules promulgated by the U.S. Securities and Exchange Commission thereunder. Mr. Susanto disclaims beneficial ownership of the securities beneficially owned by Ascend Global.

SEC source: 0001562180-24-007056 · primarydocument.xml · derivative · entry 1

Jones Bryn Llywelyn · CIK 0002026033 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,756

Underlying: Common Stock · 16,756 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

F2 · derivative.expiration_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

SEC source: 0001562180-24-007058 · primarydocument.xml · derivative · entry 1

Dick Barry · CIK 0002021913 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,756

Underlying: Common Stock · 16,756 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

F2 · derivative.expiration_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

SEC source: 0001562180-24-007057 · primarydocument.xml · derivative · entry 1

Jennings H. Keith · CIK 0001466868 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,576

Underlying: Common Stock · 28,576 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

F2 · derivative.expiration_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

SEC source: 0001562180-24-007055 · primarydocument.xml · derivative · entry 1

SALISBURY DAVID J · CIK 0001553036 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,912

Underlying: Common Stock · 38,912 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

F2 · derivative.expiration_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

SEC source: 0001562180-24-007060 · primarydocument.xml · derivative · entry 1

vant Hoff Graham · CIK 0001829340 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,560

Underlying: Common Stock · 42,560 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

F2 · derivative.expiration_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

SEC source: 0001562180-24-007059 · primarydocument.xml · derivative · entry 1

Lim Sen Ming · CIK 0001911490 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,456

Underlying: Common Stock · 19,456 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F2 · derivative.exercise_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

F2 · derivative.expiration_date: RSUs granted on September 30, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan. The RSUs vest on July 1, 2025.

SEC source: 0001562180-24-007179 · primarydocument.xml · derivative · entry 1

Jones Bryn Llywelyn · CIK 0002026033 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 0 shares

Expires not disclosed

F1 · derivative.exercise_price: This amendment is being filed to correct the amount previously reported in the Form 4 filed on October 1, 2024 (the "Original Form 4") that inadvertently reported an award of 16,178 restricted stock units ("RSUs") that did not occur. The Reporting Person was not granted such RSUs and does not beneficially own any shares underlying the awards reported on the Original Form 4.

F1 · date: This amendment is being filed to correct the amount previously reported in the Form 4 filed on October 1, 2024 (the "Original Form 4") that inadvertently reported an award of 16,178 restricted stock units ("RSUs") that did not occur. The Reporting Person was not granted such RSUs and does not beneficially own any shares underlying the awards reported on the Original Form 4.

F1 · kind: This amendment is being filed to correct the amount previously reported in the Form 4 filed on October 1, 2024 (the "Original Form 4") that inadvertently reported an award of 16,178 restricted stock units ("RSUs") that did not occur. The Reporting Person was not granted such RSUs and does not beneficially own any shares underlying the awards reported on the Original Form 4.

F1 · shares: This amendment is being filed to correct the amount previously reported in the Form 4 filed on October 1, 2024 (the "Original Form 4") that inadvertently reported an award of 16,178 restricted stock units ("RSUs") that did not occur. The Reporting Person was not granted such RSUs and does not beneficially own any shares underlying the awards reported on the Original Form 4.

F1 · price: This amendment is being filed to correct the amount previously reported in the Form 4 filed on October 1, 2024 (the "Original Form 4") that inadvertently reported an award of 16,178 restricted stock units ("RSUs") that did not occur. The Reporting Person was not granted such RSUs and does not beneficially own any shares underlying the awards reported on the Original Form 4.

F1 · derivative.exercise_date: This amendment is being filed to correct the amount previously reported in the Form 4 filed on October 1, 2024 (the "Original Form 4") that inadvertently reported an award of 16,178 restricted stock units ("RSUs") that did not occur. The Reporting Person was not granted such RSUs and does not beneficially own any shares underlying the awards reported on the Original Form 4.

F1 · derivative.expiration_date: This amendment is being filed to correct the amount previously reported in the Form 4 filed on October 1, 2024 (the "Original Form 4") that inadvertently reported an award of 16,178 restricted stock units ("RSUs") that did not occur. The Reporting Person was not granted such RSUs and does not beneficially own any shares underlying the awards reported on the Original Form 4.

F1 · derivative.underlying_shares: This amendment is being filed to correct the amount previously reported in the Form 4 filed on October 1, 2024 (the "Original Form 4") that inadvertently reported an award of 16,178 restricted stock units ("RSUs") that did not occur. The Reporting Person was not granted such RSUs and does not beneficially own any shares underlying the awards reported on the Original Form 4.

F1 · balance_after: This amendment is being filed to correct the amount previously reported in the Form 4 filed on October 1, 2024 (the "Original Form 4") that inadvertently reported an award of 16,178 restricted stock units ("RSUs") that did not occur. The Reporting Person was not granted such RSUs and does not beneficially own any shares underlying the awards reported on the Original Form 4.

SEC source: 0001562180-24-006822 · primarydocument.xml · nonDerivative · entry 2

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,605

F2 · shares: Represents the number of shares of common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the vesting of RSUs.

SEC source: 0001493152-24-037036 · ownership.xml · derivative · entry 1

Ascend Global Investment Fund SPC - Strategic Segregated Portfolio · CIK 0002001144 · Director · 10% owner

Meridian Investments Corp · CIK 0002009685 · 10% owner

Ascend Capital Advisors (S) Pte. Ltd. · CIK 0002009683 · 10% owner

Ascend Financial Holdings Ltd · CIK 0002009892 · 10% owner

Susanto Halim · CIK 0002001327 · 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: 39,276,112

Underlying: Common Stock · 3,200,000 shares

Expires 2028-08-15

F1 · derivative.exercise_price: All or any portion of the Issuer's 4.50% senior secured convertible notes (the "Convertible Notes") may be converted at the holder's election at any time prior to the close of business on the business day immediately preceding the maturity date.

F1 · derivative.exercise_date: All or any portion of the Issuer's 4.50% senior secured convertible notes (the "Convertible Notes") may be converted at the holder's election at any time prior to the close of business on the business day immediately preceding the maturity date.

F1 · derivative.underlying_shares: All or any portion of the Issuer's 4.50% senior secured convertible notes (the "Convertible Notes") may be converted at the holder's election at any time prior to the close of business on the business day immediately preceding the maturity date.

F2 · ownership.nature: Meridian Investments Corporation ("Meridian") is the record holder of Convertible Notes that are currently convertible into 19,638,056 shares of Common Stock issuable upon conversion of the outstanding principal of, and paid-in-kind interest accrued on, the Convertible Notes, assuming all interest is paid in-kind until the maturity date. In addition, Ascend Global Investment Fund SPC for and on behalf of Strategic SP ("Ascend Global") is the record holder of Convertible Notes that are currently convertible into 19,638,056 shares of Common Stock issuable upon conversion of the outstanding principal of, and paid-in-kind interest accrued on, the Convertible Notes, assuming all interest is paid in-kind until the maturity date.

F3 · ownership.nature: Ascend Global is the sole shareholder of Meridian, and as a result may be deemed to share beneficial ownership of the securities held of record by Meridian. Ascend Financial Holdings Limited is the sole shareholder of Ascend Capital Advisors (S) Pte. Ltd., which is the sole partner of Ascend Global. As a result, each of the foregoing entities may be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global. By virtue of his control of Ascend Financial, Mr. Susanto may also be deemed to share beneficial ownership of the securities beneficially owned by Ascend Global under Section 13(d) of the Securities Exchange Act of 1934 (as amended) and the rules promulgated by the U.S. Securities and Exchange Commission thereunder. Mr. Susanto disclaims beneficial ownership of the securities beneficially owned by Ascend Global.

SEC source: 0000950170-24-107767 · ownership.xml · derivative · entry 1

BEP Special Situations IV LLC · CIK 0001942792 · 10% owner

Bluescape Energy Partners IV GP LLC · CIK 0001942819 · 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: 40,947,329

Underlying: Common Stock · 4,690,335 shares

Expires not disclosed

F1 · derivative.exercise_price: The reported securities represent $3,000,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 1,066.6667 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · derivative.exercise_price: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 4,690,335 and 36,256,994 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · shares: The reported securities represent $3,000,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 1,066.6667 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · shares: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 4,690,335 and 36,256,994 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · price: The reported securities represent $3,000,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 1,066.6667 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · price: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 4,690,335 and 36,256,994 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · derivative.exercise_date: The reported securities represent $3,000,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 1,066.6667 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · derivative.exercise_date: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 4,690,335 and 36,256,994 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · derivative.expiration_date: The reported securities represent $3,000,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 1,066.6667 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · derivative.expiration_date: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 4,690,335 and 36,256,994 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · derivative.underlying_shares: The reported securities represent $3,000,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 1,066.6667 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · derivative.underlying_shares: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 4,690,335 and 36,256,994 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F1 · balance_after: The reported securities represent $3,000,000 in aggregate principal amount of additional senior secured convertible notes (the "Additional Convertible Notes") with a conversion rate of 1,066.6667 shares of common stock, par value $.01 per share (the "Common Stock"), of the Issuer, per $1,000 principal amount of the Additional Convertible Notes. The Additional Notes are directly held by BEP Special Situations IV LLC ("Bluescape") and the terms of the Additional Convertible Notes are substantially similar to the existing senior secured convertible notes reported as beneficially owned by the Reporting Persons (collectively with the Additional Convertible Notes, the "Notes").

F2 · balance_after: (continued from footnote 1) All or any portion of the Notes may be converted at Bluescape's election at any time prior to the close of business on the business day immediately preceding August 15, 2028. The 4,690,335 and 36,256,994 shares of Common Stock reported as underlying the Additional Convertible Notes and the previously reported Notes, respectively, reflect the maximum number of shares of Common Stock Bluescape would receive assuming the Issuer pays all accrued interest in kind until maturity.

F3 · balance_after: In connection with the consummation of the offering by the Issuer, on August 28, 2024, of an of an aggregate of: (i) 5,333,333 shares of Common Stock, (ii) Series A warrants to purchase up to an aggregate of up to 5,333,333 shares of Common Stock and (iii) Series B warrants to purchase an aggregate of 5,333,333 shares of Common Stock, the conversion rate for the Notes issued on June 11, 2024, which were previously reported as purchased by the Reporting Person on June 13, 2024 (the "June Notes"), was automatically adjusted pursuant to Section 2.8(d)(iv) of the Amended and Restated Note Purchase Agreement, dated as of January 18, 2024, as amended on April 28, 2024, May 28, 2024, and September 16, 2024, from 650.4065 to 692.7990 per $1,000 principal amount of the June Notes, resulting in an additional 191,292 shares of Common Stock underlying the June Notes assuming the Issuer pays all accrued interest on the June Notes in kind until maturity.

F4 · ownership.direct: Bluescape Energy Partners IV GP LLC ("Bluescape GP" and, together with Bluescape, the "Reporting Persons") is the general partner of Bluescape Energy Recapitalization and Restructuring Fund IV LP, which wholly owns Bluescape. As such, Bluescape GP may be deemed to have beneficial ownership of the securities held by Bluescape. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0001562180-24-006822 · primarydocument.xml · derivative · entry 4

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,471

Underlying: Common Stock · 26,471 shares

Expires not disclosed

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F4 · derivative.exercise_date: RSUs granted on September 15, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan (the "Plan"). The RSUs vest in three equal installments beginning on the first anniversary of the grant date.

F4 · derivative.expiration_date: RSUs granted on September 15, 2024 pursuant to the Issuer's 2022 Equity Compensation Plan (the "Plan"). The RSUs vest in three equal installments beginning on the first anniversary of the grant date.

SEC source: 0001562180-24-006822 · primarydocument.xml · derivative · entry 3

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,391

Underlying: Common Stock · 12,195 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.

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F3 · derivative.exercise_date: RSUs granted on September 15, 2023 pursuant to the Issuer's 2022 Equity Compensation Plan (the "Plan"). The RSUs vest in three equal installments beginning on the first anniversary of the grant date.

F3 · derivative.expiration_date: RSUs granted on September 15, 2023 pursuant to the Issuer's 2022 Equity Compensation Plan (the "Plan"). The RSUs vest in three equal installments beginning on the first anniversary of the grant date.

SEC source: 0001562180-24-006822 · primarydocument.xml · nonDerivative · entry 1

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,957

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: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

SEC source: 0001562180-24-006618 · primarydocument.xml · nonDerivative · entry 2

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,762

F2 · shares: Represents the number of shares of common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the vesting of RSUs.

SEC source: 0001562180-24-006618 · primarydocument.xml · derivative · entry 3

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,064

Underlying: Common Stock · 3,063 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.

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

F3 · derivative.exercise_date: RSUs granted on September 1, 2022 pursuant to the Issuer's 2022 Equity Compensation Plan (the "Plan"). The RSUs vest in three equal installments beginning on the first anniversary of the grant date.

F3 · derivative.expiration_date: RSUs granted on September 1, 2022 pursuant to the Issuer's 2022 Equity Compensation Plan (the "Plan"). The RSUs vest in three equal installments beginning on the first anniversary of the grant date.

SEC source: 0001562180-24-006618 · primarydocument.xml · nonDerivative · entry 1

Weibel Paul Wesley III · CIK 0001911537 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,855

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: Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.

SEC source: 0001562180-24-005419 · primarydocument.xml · derivative · entry 4

Dick Barry · CIK 0002021913 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 706 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.

F1 · security: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F1 · derivative.exercise_price: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F1 · derivative.exercise_date: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F1 · derivative.expiration_date: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

SEC source: 0001562180-24-005419 · primarydocument.xml · nonDerivative · entry 2

Dick Barry · CIK 0002021913 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 444

SEC source: 0001562180-24-005419 · primarydocument.xml · nonDerivative · entry 1

Dick Barry · CIK 0002021913 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 706

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 · kind: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F1 · price: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F1 · acquired: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

SEC source: 0001562180-24-005420 · primarydocument.xml · derivative · entry 13

Jennings H. Keith · CIK 0001466868 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 17,233 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.

F4 · security: On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F4 · derivative.exercise_price: On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F4 · derivative.exercise_date: On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F4 · derivative.expiration_date: On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

SEC source: 0001562180-24-005420 · primarydocument.xml · derivative · entry 12

Jennings H. Keith · CIK 0001466868 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 17,232 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.

F3 · security: On March 29, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F3 · derivative.exercise_price: On March 29, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F3 · derivative.exercise_date: On March 29, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F3 · derivative.expiration_date: On March 29, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

SEC source: 0001562180-24-005420 · primarydocument.xml · derivative · entry 11

Jennings H. Keith · CIK 0001466868 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 11,099 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 · security: On December 29, 2023, the reporting person was granted RSUs that vest on July 1, 2024.

F2 · derivative.exercise_price: On December 29, 2023, the reporting person was granted RSUs that vest on July 1, 2024.

F2 · derivative.exercise_date: On December 29, 2023, the reporting person was granted RSUs that vest on July 1, 2024.

F2 · derivative.expiration_date: On December 29, 2023, the reporting person was granted RSUs that vest on July 1, 2024.

SEC source: 0001562180-24-005420 · primarydocument.xml · derivative · entry 10

Jennings H. Keith · CIK 0001466868 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,947 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.

F1 · security: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On October 12, 2023, the reporting person was granted RSUs that vest on July 1, 2024.

F1 · derivative.exercise_price: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On October 12, 2023, the reporting person was granted RSUs that vest on July 1, 2024.

F1 · derivative.exercise_date: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On October 12, 2023, the reporting person was granted RSUs that vest on July 1, 2024.

F1 · derivative.expiration_date: Each Director Restricted Share Units ("RSUs") represents a contingent right to receive one share of 5E Advanced Material, Inc.'s (the "Issuer") common stock (the "Common Stock"). On October 12, 2023, the reporting person was granted RSUs that vest on July 1, 2024.

SEC source: 0001562180-24-005420 · primarydocument.xml · nonDerivative · entry 8

Jennings H. Keith · CIK 0001466868 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,939

SEC source: 0001562180-24-005420 · primarydocument.xml · nonDerivative · entry 7

Jennings H. Keith · CIK 0001466868 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,316

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.

F4 · kind: On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F4 · price: On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

F4 · acquired: On June 28, 2024, the reporting person was granted RSUs that vest on July 1, 2024.

SEC source: 0001562180-24-005420 · primarydocument.xml · nonDerivative · entry 6

Jennings H. Keith · CIK 0001466868 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,083