X0609 4 2026-09-30 0 0001888654 5E Advanced Materials, Inc. FEAM 0001942792 BEP Special Situations IV LLC false 300 CRESCENT COURT SUITE 1860 DALLAS TX 75201 1 0 1 0 0001942819 Bluescape Energy Partners IV GP LLC false 300 CRESCENT COURT SUITE 1860 DALLAS TX 75201 1 0 1 0 0001694685 Bluescape Resources GP Holdings LLC false 300 CRESCENT COURT SUITE 1860 DALLAS TX 75201 1 0 1 0 0001629283 Bluescape Energy Partners LLC false 300 CRESCENT COURT SUITE 1860 DALLAS TX 75201 1 0 1 0 0001629286 Bluescape Resources Co LLC false 300 CRESCENT COURT SUITE 1860 DALLAS TX 75201 1 0 1 0 0001077495 WILDER C JOHN false 300 CRESCENT COURT SUITE 1860 DALLAS TX 75201 1 0 1 0 0 Restricted Stock Unit 2026-09-30 4 A 0 7634 0 A Common Stock 7634 7634 I See footnotes 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. /s/ BEP Special Situations IV LLC 2026-10-01 /s/ Bluescape Energy Partners IV GP LLC 2026-10-01 /s/ Bluescape Resources GP Holdings LLC 2026-10-01 /s/ Bluescape Energy Partners LLC 2026-10-01 /s/ Bluescape Resources Co LLC 2026-10-01 /s/ C John Wilder 2026-10-01