Gevo officer sells 1,221 shares at about $1.71

Gevo’s Chief of Staff reported a small, plan-driven sale of shares to cover tax and administrative obligations while retaining a substantial direct and 401(k) position.

Rhea-AI Filing Summary

Gevo, Inc. (GEVO) reports that Chief of Staff Kimberly T. Bowron sold 1,221 shares of common stock on September 3, 2026 at a weighted average price of about $1.71 per share to cover withholding obligations upon vesting of a restricted stock award, with the sales effected under a Rule 10b5-1 trading plan adopted on November 20, 2025. After this sale, she holds 684,817 shares directly and 14,957.39 shares indirectly through a 401(k) plan, where a total of 5.14 shares were disposed of between August 6, 2026 and September 3, 2026 to cover plan administrative fees.

Insider Trade Summary 10b5-1

Net Seller: 1,221 shares

Net Sell 2 txns

Insider Bowron Kimberly T

Role Chief of Staff

Sold 1,221 shs ($2K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	1,221	$1.7099	$2K
holding	Common Stock F3	--	--	--

Holdings After Transaction: Common Stock — 684,817 shares (Direct); Common Stock — 14,957.39 shares (Indirect, By 401(k) Plan)

Footnotes (3)

1. F1. Represents shares sold by the Reporting Person to cover withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on November 20, 2025.
2. F2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.70 to $1.71 per share, exclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
3. F3. Between August 6, 2026 and September 3, 2026, the reporting person disposed of 5.14 shares of the issuer's common stock under the issuer's 401(k) plan to cover administrative fees. The information in this report is based on a plan statement dated August 25, 2026.

Key Figures

Shares sold: 1,221 shares Weighted average sale price: $1.7099 per share Direct holdings after transaction: 684,817 shares +3 more

6 metrics

Shares sold 1,221 shares Common stock sold on September 3, 2026

Weighted average sale price $1.7099 per share Weighted average price for 1,221 shares sold on September 3, 2026

Direct holdings after transaction 684,817 shares Direct ownership of Gevo common stock following September 3, 2026 sale

401(k) holdings after transaction 14,957.39 shares Indirect ownership through Gevo’s 401(k) plan after reported period

401(k) shares disposed 5.14 shares Disposed between August 6, 2026 and September 3, 2026 to cover administrative fees

10b5-1 plan adoption date November 20, 2025 Date Kimberly T. Bowron adopted the Rule 10b5-1 trading plan used for the sale

Key Terms

Rule 10b5-1 trading plan, restricted stock award, weighted average price, 401(k) plan, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"The reported sales were effected pursuant to a 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock award financial

"to cover withholding obligations upon vesting of a restricted stock award"

A restricted stock award is company shares given to an employee or executive that cannot be sold or fully owned until certain conditions—like staying with the company for a set time or hitting performance targets—are met. Think of it as a gift that only becomes yours after you fulfill specific obligations; for investors, these awards matter because they can increase the total shares outstanding when they vest, reveal how management is being paid and motivated, and create potential selling pressure when restrictions lift.

weighted average price financial

"The reported price in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

401(k) plan financial

"under the issuer's 401(k) plan to cover administrative fees."

A 401(k) plan is a workplace retirement account that lets employees set aside part of their pay into a tax-advantaged savings pot, often with employers adding matching contributions — like a workplace piggy bank for future income. It matters to investors because the amount people save and how employers fund these plans influence consumer spending, corporate payroll costs and the flow of money into financial markets, which can affect stock prices and company valuations.

withholding obligations financial

"shares sold by the Reporting Person to cover withholding obligations"

FAQ

What insider transaction did GEVO report for Kimberly T. Bowron on this Form 4?

Kimberly T. Bowron, Gevo’s Chief of Staff, reported selling 1,221 shares of Gevo common stock on September 3, 2026 at a weighted average price of about $1.71 per share to cover withholding obligations upon vesting of a restricted stock award.

Was the GEVO insider sale by Kimberly T. Bowron made under a Rule 10b5-1 plan?

Yes. The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Kimberly T. Bowron on November 20, 2025, as disclosed in the footnotes to the Form 4.

How many GEVO shares does Kimberly T. Bowron hold after the reported transactions?

After the reported transactions, Kimberly T. Bowron holds 684,817 shares directly of Gevo common stock and 14,957.39 shares indirectly through Gevo’s 401(k) plan, according to the Form 4.

What price range applied to the GEVO shares sold by Kimberly T. Bowron?

The filing states the reported price is a weighted average. The 1,221 shares were sold in multiple transactions at prices ranging from $1.70 to $1.71 per share, with a weighted average reported as about $1.71 per share.

What 401(k)-related GEVO share activity is disclosed for Kimberly T. Bowron?

Between August 6, 2026 and September 3, 2026, she disposed of 5.14 shares of Gevo common stock in the company’s 401(k) plan to cover administrative fees, based on a plan statement dated August 25, 2026.

What role does Kimberly T. Bowron hold at GEVO?

Kimberly T. Bowron is identified in the Form 4 as an officer of Gevo, Inc., serving in the position of Chief of Staff.

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Available on EDGAR 09/04/2026 - 05:25 PM Accepted by SEC EDGAR 09/04/2026 - 05:24 PM 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).

X

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^*

Bowron Kimberly T

(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 of Staff

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/03/2026

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	09/03/2026		S(1)		1,221	D	$1.7099(2)	684,817	D
Common Stock								14,957.39(3)	I	By 401(k) Plan

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:

1. Represents shares sold by the Reporting Person to cover withholding obligations upon vesting of a restricted stock award. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on November 20, 2025.

2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.70 to $1.71 per share, exclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. Between August 6, 2026 and September 3, 2026, the reporting person disposed of 5.14 shares of the issuer's common stock under the issuer's 401(k) plan to cover administrative fees. The information in this report is based on a plan statement dated August 25, 2026.

Remarks:

	/s/ E. Cabell Massey, Attorney-in-Fact	09/04/2026
	** 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)