FEAM · 5E Advanced Materials, Inc. · Insider Trading

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Jonathan Siegler, a director on the Issuer's board and director designee of the Reporting Persons, has entered into an agreement with Bluescape Energy Partners LLC ("Bluescape Energy Partners") pursuant to which the foregoing individual has irrevocably assigned to Bluescape Energy Partners any and all rights and interests in the common stock underlying the equity compensation that he will receive for serving as a director of the Issuer, including the equity awards reported herein.

The award will vest on July 1, 2027, subject to Jonathan Siegler continuing to serve as a director of the Issuer through the vesting date.

C. John Wilder is the controlling member of Bluescape Resources Co LLC which, in turn, is the controlling member of each of Bluescape Energy Partners LLC and Bluescape Resources GP Holdings LLC ("Bluescape Resources GP"). Bluescape Resources GP is the controlling member of Bluescape Energy Partners IV GP LLC, which is the general partner of Bluescape Energy Recapitalization and Restructuring Fund IV LP, which is the controlling member of BEP Special Situations IV LLC, which is also a registered holder of securities of the Issuer. Each Reporting Person herein disclaims beneficial ownership of these securities, except to the extent of such Reporting Person's pecuniary interest therein.

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

RSUs granted on September 30, 2026 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2027, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

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

RSUs granted on September 30, 2026 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2027, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

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

RSUs granted on September 30, 2026 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2027, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

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

RSUs granted on September 30, 2026 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vest on July 1, 2027, subject to the Reporting Person's continuing service on the Issuer's Board through the applicable vesting date. The RSUs have no expiration date.

PSUs granted on September 15, 2023 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan (the "Plan"). Amount represents the vesting of PSUs. Pursuant to the determination of the Compensation Committee of the Board of Directors, the PSUs vested at 50% of the target number of shares based on achievement of the applicable performance criteria. The remaining unvested PSUs were forfeited.

Each performance share unit ("PSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock upon the achievement of certain service-based and performance-based conditions.

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 and PSUs.

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.

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

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

RSUs granted on March 1, 2026 pursuant to the Issuer's Plan. Approximately one-third vest on each of September 15 of 2026, 2027 and 2028.

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

RSUs granted on September 15, 2024 pursuant to the Issuer's Plan. Approximately one-third vested on each of the first, second and third anniversary of the grant date.

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

RSUs granted on March 1, 2026 pursuant to the Issuer's Plan. One-third vest on each of September 15 of 2026, 2027 and 2028.

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

RSUs granted on September 15, 2023 pursuant to the Issuer's Plan. One-third vested on each of the first, second and third anniversary of the grant date.

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

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

RSUs granted on March 31, 2026 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2026.

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

RSUs granted on December 31, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2026.

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

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

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

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

RSUs granted on September 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2026.

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

RSUs granted on March 31, 2026 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2026.

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

RSUs granted on September 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2026.

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

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

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

RSUs granted on June 30, 2026 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2026.

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

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

RSUs granted on September 30, 2025 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2026.

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

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

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

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

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

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

RSUs granted on June 30, 2026 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2026.

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

RSUs granted on March 31, 2026 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2026.

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