Material Event (Form 8-K)

Previously, Gevo, Inc. (the "Company" or "Gevo") announced that it had secured a conditional commitment (the "Conditional Commitment") from the U.S. Department of Energy ("DOE") Office of Energy Dominance Financing (formerly known as the Loan Programs Office) ("EDF") to guarantee a loan for its ATJ-60 synthetic aviation fuel project (formerly known as Net-Zero 1) in Lake Preston, South Dakota, and that such Conditional Commitment was extended until April 2026. Following a recent conversation with EDF, Gevo decided to withdraw its application for a DOE loan guarantee as (i) the business objectives required by the EDF to support enhanced oil recovery ("EOR") are not yet commercially viable at scale in the project area, and (ii) opportunities for alternative financing and broadened product offerings are better aligned with company strategy and can accelerate the timeline for project execution. The withdrawal will reserve the opportunity for Gevo to resubmit an application for a project at a later date, if desired. Gevo intends to continue its efforts on its announced ATJ-30 project in Richardton, North Dakota as the project remains in line with overall company strategy and timeline for execution. The withdrawal was made on April 15, 2026, in advance of the expiration date for the Conditional Commitment.