Kettner David Michael 4/A

What Happened

• David Michael Kettner, General Counsel of Gevo, received a grant of 158,334 restricted common shares on 2026-04-01 (acquired at $0.00 per share). To cover tax withholding on vesting, 27,278 shares were withheld/disposed at $2.40 per share, generating proceeds of $65,467. This Form 4 is an amendment correcting the amount of securities subject to tax withholding.

Key Details

• Transaction date: April 1, 2026 (Period of Report: 2026-04-01). Form filed (amended) on May 22, 2026 (Accession: 0002131186-26-000005).
• Award: 158,334 shares granted (code A) at $0.00 acquisition price.
• Tax withholding: 27,278 shares withheld (code F) at $2.40 = $65,467.
• Vesting: Footnote F1 — award vests in three equal annual installments beginning on the grant date, subject to continued service.
• Footnotes: F2 = shares withheld to cover tax obligations; F3 = amendment filed to correct an inadvertent error in the reported withholding amount.
• Timeliness: The filing date (May 22) is well after the typical two-business-day reporting window for Form 4s, and this filing is marked as amended.

Context

• This was an equity compensation grant (restricted stock) rather than an open-market buy or sale. Withholding shares to cover taxes is a routine, administrative step and reduces the number of shares actually delivered to the insider. Amended Form 4s commonly correct reporting details and do not by themselves indicate a change in economic exposure or intent.