Decarbonization Plus Acquisition Corp IV (Nasdaq: DCRD) is a blank-check company that completed its initial public offering in 2021, targeting businesses in the clean energy and decarbonization sector. The SPAC was sponsored by Decarbonization Plus Acquisition Sponsor IV LLC, an entity affiliated with Riverstone Holdings, the energy-focused private equity firm that backed the broader Decarbonization Plus series of vehicles. The 10-K filed with the SEC on March 29, 2022 covers the fiscal year ended December 31, 2021, during which DCRD was actively searching for a business combination target. The SPAC subsequently announced and completed a merger with Hammerhead Energy Inc., a Canadian oil and gas operator with a stated decarbonization mandate, with the transaction closing in early 2023. For full filing history, deal terms, and sponsor disclosures on DCRD and hundreds of other SPACs, sign up for SpacDesk at spacdesk.com.