Hammerhead Energy (Decarbonization Plus Acquisition IV) ^{Priced, Nasdaq: HHRS}

We are a blank check company newly incorporated as a Cayman Islands exempted company and formed for the purpose of effecting a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses, which we refer to throughout this prospectus as our initial business combination. We have not identified any potential business combination target and we have not, nor has anyone on our behalf, initiated any substantive discussions, directly or indirectly, with any potential business combination target. Although we may pursue an acquisition opportunity in any business or industry, we intend to capitalize on the Riverstone platform to identify, acquire and operate a business in industries that may provide opportunities for attractive risk-adjusted returns in one of the multiple sectors that may advance the objectives of global decarbonization. This includes the energy and agriculture, industrials, transportation and commercial and residential sectors. We believe these areas of focus represent a favorable and highly fragmented market opportunity to consummate a business combination.