Decarbonization Plus Acquisition Corp IV (Nasdaq: DCRD) is a blank-check company sponsored by Decarbonization Plus Acquisition Management IV LLC, an affiliate of global energy-focused private equity firm Riverstone Holdings, with a mandate to pursue acquisitions in the clean energy and decarbonization sectors. The SPAC filed its S-1 in March 2021 and completed its initial public offering that same year. DCRD subsequently announced and closed a business combination with Hammerhead Energy Inc., a Canadian oil and natural gas company committed to responsible resource development, with the combined company listing on Nasdaq under the ticker HHRS. Sign up at SpacDesk for full filing history, deal timelines, and analytics across the SPAC universe.