X0306 4 2023-02-22 1 0001848959 Decarbonization Plus Acquisition Corp IV DCRD 0001848961 Decarbonization Plus Acquisition Sponsor IV LLC C/O DECARBONIZATION PLUS ACQ CORP. IV 2744 SAND HILL ROAD, SUITE 100 MENLO PARK CA 94025 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 B Common Shares 2023-02-22 4 D 0 3464323 D Class A Common Shares 3464323 0 I See Footnotes In connection with the closing of the business combination (the "Business Combination") between Decarbonization Plus Acquisition Corporation IV ("DCRD"), Hammerhead Resources Inc., an Alberta corporation ("Hammerhead"), Hammerhead Energy Inc., an Alberta corporation and wholly owned subsidiary of Hammerhead ("NewCo"), and 2453729 Alberta ULC, an Alberta unlimited liability corporation and wholly owned subsidiary of DCRD, on February 21, 2023, DCRD transferred by way of continuation from the Cayman Islands to the Province of Alberta, Canada in accordance with the Cayman Islands Companies Act (as amended) and domesticated as an Alberta corporation in accordance with the applicable provisions of the Business Corporations Act (Alberta) (such transfer by way of continuation and domestication, the "Domestication"). (Continued from footnote 1) Pursuant to the Domestication, each Class B ordinary share of DCRD was exchanged for one Class B common share of DCRD ("DCRD Class B Common Share"). Following the Domestication, on February 22, 2023, DCRD amalgamated with NewCo (the "SPAC Amalgamation") to form one corporate entity ("New SPAC") with NewCo surviving the SPAC Amalgamation as New SPAC. Pursuant to the SPAC Amalgamation, each DCRD Class B Common Share issued and outstanding immediately prior to the effective time of the SPAC Amalgamation was exchanged, on a one-for-one basis, for a Class B common share in the authorized share capital of New SPAC. Decarbonization Plus Acquisition Sponsor IV LLC is the record holder of the securities reported herein. David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Holdings LLC, which controls Decarbonization Plus Acquisition Sponsor IV LLC. Each of Riverstone Holdings LLC, Mr. Leuschen and Mr. Lapeyre, Jr. may be deemed to have or share beneficial ownership of the securities held directly by Decarbonization Plus Acquisition Sponsor IV 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. Decarbonization Plus Acquisition Sponsor IV LLC, /s/ Peter Haskopoulos, Managing Director 2023-02-22 Riverstone Holdings LLC, /s/ Peter Haskopoulos, Authorized Person 2023-02-22 David M. Leuschen, /s/ Peter Haskopoulos, Attorney-in-fact 2023-02-22 Pierre F. Lapeyre, Jr., /s/ Peter Haskopoulos, Attorney-in-fact 2023-02-22