X0306 4 2021-10-25 0 0001844862 Decarbonization Plus Acquisition Corp III DCRC 0001844863 Decarbonization Plus Acquisition Sponsor III LLC C/O RIVERSTONE HOLDINGS LLC 712 FIFTH AVENUE, 36TH FLOOR NEW YORK NY 10019 0 0 1 0 0001247497 RIVERSTONE HOLDINGS LLC C/O RIVERSTONE HOLDINGS LLC 712 FIFTH AVENUE, 36TH FLOOR NEW YORK NY 10019 0 0 1 0 0001222726 LEUSCHEN DAVID M C/O RIVERSTONE HOLDINGS LLC 712 FIFTH AVENUE, 36TH FLOOR NEW YORK NY 10019 0 0 1 0 0001232151 LAPEYRE PIERRE F JR C/O RIVERSTONE HOLDINGS LLC 712 FIFTH AVENUE, 36TH FLOOR NEW YORK NY 10019 0 0 1 0 Class A Common Stock 2021-10-25 4 C 0 8390000 A 8390000 I See footnotes Class B Common Stock 2021-10-25 4 C 0 8390000 D Class A Common Stock 8390000 0 I See footnotes In accordance with the amended and restated certificate of incorporation of Decarbonization Plus Acquisition Corporation III ("DCRC"), the Reporting Person elected to convert its shares of Class B Common Stock into shares of Class A Common Stock on a one-for-one basis. The shares of Class B Common Stock were (i) convertible into shares of Class A Common Stock at the Reporting Person's election on a one-for-one basis and (ii) automatically convertible into shares of Class A Common Stock at the time of DCRC's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights (which rights were waived by the Reporting Person in connection with DCRC's proposed business combination), and had no expiration date. Decarbonization Plus Acquisition Sponsor III LLC is the record holder of the shares reported herein. David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Holdings LLC, which controls Decarbonization Plus Acquisition Sponsor III LLC. Each of Riverstone Holdings LLC, Mr. Leuschen and Mr. Lapeyre may be deemed to have or share beneficial ownership of the common stock held directly by Decarbonization Plus Acquisition Sponsor III LLC. Each such entity or person disclaims any such beneficial ownership of such securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose. Number of shares has been adjusted to include 40,000 shares that were reported on the Form 4 filed by the Reporting Person on April 22, 2021 but which were inadvertently omitted from the number of shares reported in Column 9 of Table II of the Form 4 filed by the Reporting Person on May 7, 2021. Decarbonization Plus Acquisition Sponsor III LLC, /s/ Peter Haskopoulos, Managing Director 2021-10-27 Riverstone Holdings LLC, /s/ Peter Haskopoulos, Authorized Person 2021-10-27 David M. Leuschen, /s/ Peter Haskopoulos, Attorney-in-fact 2021-10-27 Pierre F. Lapeyre, Jr., /s/ Peter Haskopoulos, Attorney-in-fact 2021-10-27