Gevo legal chief buys 12,500 shares at $1.55

Gevo, Inc. (GEVO) reported that officer David Michael Kettner, Chief Legal & Emerging Business Officer, purchased 12,500 shares of Gevo common stock on 2026-08-21.

Rhea-AI Filing Summary

Gevo, Inc. (GEVO) reported that officer David Michael Kettner, Chief Legal & Emerging Business Officer, purchased 12,500 shares of Gevo common stock on 2026-08-21. The shares were bought in a purchase in open market or private transaction at a price of $1.5495 per share, bringing his directly held stake to 276,788 shares.

Insider Trade Summary

Net Buyer: 12,500 shares

Net Buy 1 txn

Insider Kettner David Michael

Role Chief Legal & Emrg Biz Officer

Bought 12,500 shs ($19K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	12,500	$1.5495	$19K

Holdings After Transaction: Common Stock — 276,788 shares (Direct)

Key Figures

Shares purchased: 12,500 shares Purchase price per share: $1.5495 per share Shares owned after transaction: 276,788 shares +1 more

4 metrics

Shares purchased 12,500 shares Common Stock purchased on 2026-08-21

Purchase price per share $1.5495 per share Purchase in open market or private transaction

Shares owned after transaction 276,788 shares Direct ownership following the reported purchase

Net buy shares reported 12,500 shares Net of all buy and sell transactions in this Form 4

Key Terms

purchase in open market or private transaction, non-derivative, direct ownership

3 terms

purchase in open market or private transaction financial

"transaction code description "Purchase in open market or private transaction""

non-derivative financial

"transaction_type": "non-derivative" for the Common Stock trade"

direct ownership financial

"ownership_type": "direct" and ownership_code": "D""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Gevo (GEVO) disclose for David Michael Kettner?

Gevo disclosed that David Michael Kettner12,500 shares of Gevo common stock on 2026-08-21 in a purchase in open market or private transaction at $1.5495 per share.

What is David Michael Kettner’s Gevo (GEVO) shareholding after this Form 4 transaction?

After the reported transaction, David Michael Kettner276,788 shares of Gevo common stock, according to the Form 4 filing.

Was the Gevo (GEVO) insider transaction by David Michael Kettner a buy or a sell?

The transaction was a buy. The Form 4 classifies it as a purchase in open market or private transaction of 12,500 shares of Gevo common stock.

At what price did David Michael Kettner buy Gevo (GEVO) shares?

He bought the shares at a price of $1.5495 per share for 12,500 shares of Gevo common stock on 2026-08-21.

Does the Gevo (GEVO) Form 4 mention a Rule 10b5-1 trading plan?

No. The filing’s Rule 10b5-1 affirmation box is unchecked (aff_10b5_one is false), and there is no footnote indicating that the transaction was made pursuant to a Rule 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 08/24/2026 - 06:02 PM EDT Accepted by SEC EDGAR 08/24/2026 - 06:02 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Kettner David Michael

(Last) (First) (Middle)

C/O GEVO, INC. 345 INVERNESS DRIVE SOUTH

BUILDING C, SUITE 310

(Street)

ENGLEWOOD COLORADO 80112

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Gevo, Inc. [ GEVO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Legal & Emrg Biz Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/21/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/21/2026		P		12,500	A	$1.5495	276,788	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ E. Cabell Massey, Attorney-in-Fact	08/24/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)