Gevo executive sells shares to cover tax withholding

Gevo, Inc. Chief of Staff Kimberly T. Bowron reported a sale of 15,470 shares of common stock on June 12, 2026 at a weighted average price of $1.4252 per share.

Rhea-AI Filing Summary

Gevo, Inc. Chief of Staff Kimberly T. Bowron reported a sale of 15,470 shares of common stock on June 12, 2026 at a weighted average price of $1.4252 per share. According to the disclosure, these shares were sold to cover tax withholding obligations tied to the vesting of a restricted stock award and were executed under a pre-arranged Rule 10b5-1 trading plan adopted on November 20, 2025.

Following the transaction, Bowron directly holds 696,295 shares of Gevo common stock and indirectly holds 14,973.97 shares through a 401(k) plan, indicating that the reported sale represents a small portion of her overall stake.

Insider Trade Summary 10b5-1

Net Seller: 15,470 shares

Net Sell 2 txns

Insider Bowron Kimberly T

Role Chief of Staff

Sold 15,470 shs ($22K)

Type	Security	Shares	Price	Value
Sale	Common Stock	15,470	$1.4252	$22K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 696,295 shares (Direct); Common Stock — 14,973.97 shares (Indirect, By 401(k) Plan)

Footnotes (2)

1. F1. Represents shares sold by the Reporting Person to cover tax 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 $1.390 to $1.475 per share, inclusive. 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.

Key Figures

Shares sold: 15,470 shares Weighted average sale price: $1.4252 per share Direct holdings after transaction: 696,295 shares +3 more

6 metrics

Shares sold 15,470 shares Common stock sold on June 12, 2026

Weighted average sale price $1.4252 per share Open-market sale price range $1.390–$1.475

Direct holdings after transaction 696,295 shares Common stock directly held by Kimberly T. Bowron

Indirect 401(k) holdings 14,973.97 shares Common stock held via 401(k) Plan

Tax-related sale amount 15,470 shares Sold to cover tax withholding on restricted stock vesting

10b5-1 plan adoption date November 20, 2025 Date Bowron’s Rule 10b5-1 trading plan was adopted

Key Terms

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

4 terms

restricted stock award financial

"cover tax 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.

10b5-1 trading plan regulatory

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

A 10b5-1 trading plan is a pre-arranged strategy that allows company insiders to buy or sell company stock at set times, regardless of their current knowledge about the company's situation. It acts like a scheduled appointment for trading, helping prevent the appearance of impropriety or insider trading. This plan provides a way for insiders to sell or buy shares in a controlled, transparent manner, offering reassurance to investors about fair trading practices.

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

"nature_of_ownership": "By 401(k) Plan""

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.

FAQ

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

What insider transaction did Gevo (GEVO) report for Kimberly T. Bowron?

Gevo reported that Chief of Staff Kimberly T. Bowron sold 15,470 shares of common stock. The shares were sold on June 12, 2026, primarily to cover tax withholding obligations arising from the vesting of a restricted stock award under an existing compensation arrangement.

At what price were Kimberly Bowron’s Gevo (GEVO) shares sold?

The reported sale used a weighted average price of $1.4252 per share. The filing notes that multiple trades occurred in a range from $1.390 to $1.475 per share, and detailed trade breakdowns are available from the company or Bowron upon request.

Why did Gevo’s Chief of Staff sell 15,470 shares of GEVO stock?

The sale was made to cover tax withholding obligations related to the vesting of a restricted stock award. Such tax-related sales are common for equity compensation and do not necessarily reflect a discretionary decision to reduce overall investment in the company.

Was Kimberly Bowron’s Gevo (GEVO) share sale under a Rule 10b5-1 plan?

Yes. The filing states the sales were effected under a Rule 10b5-1 trading plan adopted on November 20, 2025. These pre-arranged trading plans schedule transactions in advance, which can reduce the significance of the exact timing of the sale for investors.

How many Gevo (GEVO) shares does Kimberly Bowron hold after the sale?

After the reported transaction, Kimberly Bowron holds 696,295 Gevo common shares directly. She also has an additional 14,973.97 shares held indirectly through a 401(k) plan, showing she retains a substantial equity position in the company following the tax-related sale.

What does the 401(k) Plan holding mean in Kimberly Bowron’s Gevo filing?

The filing discloses 14,973.97 Gevo shares held indirectly through a 401(k) Plan. Indirect holdings like this reflect retirement-plan investments rather than directly held trading shares but still represent beneficial ownership attributed to the reporting person under SEC rules.

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

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Accepted by SEC EDGAR 06/15/2026 - 05:22 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)
06/12/2026

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	06/12/2026		S(1)		15,470	D	$1.4252(2)	696,295	D
Common Stock								14,973.97	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 tax 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 $1.390 to $1.475 per share, inclusive. 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.

Remarks:

	/s/ E. Cabell Massey, Attorney-in-Fact	06/15/2026
	** 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)