Gevo officer sells shares for tax withholding

Gevo, Inc. officer Andrew Shafer reported an insider transaction involving company common stock.

Rhea-AI Filing Summary

Gevo, Inc. officer Andrew Shafer reported an insider transaction involving company common stock. He sold 9,443 shares at a weighted average price of $1.4252 per share in an open-market transaction. According to the footnotes, these shares were sold solely to cover tax withholding obligations upon vesting of a restricted stock award and were executed under a pre-arranged Rule 10b5-1 trading plan adopted on November 19, 2025.

After the sale, Shafer directly holds 311,608 shares of Gevo common stock and indirectly holds 16,858.96 shares through a 401(k) plan. The filing reflects a routine, tax-related disposition rather than a discretionary reduction of his overall equity position.

Insider Trade Summary 10b5-1

Net Seller: 9,443 shares

Net Sell 2 txns

Insider Shafer Andrew

Role Chief Mktg Cust & Brnd Officer

Sold 9,443 shs ($13K)

Type	Security	Shares	Price	Value
Sale	Common Stock	9,443	$1.4252	$13K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 311,608 shares (Direct); Common Stock — 16,858.96 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 19, 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: 9,443 shares Weighted average sale price: $1.4252 per share Sale price range: $1.390–$1.475 per share +3 more

6 metrics

Shares sold 9,443 shares Open-market sale to cover tax withholding

Weighted average sale price $1.4252 per share Common stock sale on 2026-06-12

Sale price range $1.390–$1.475 per share Multiple transactions within reported range

Direct holdings after transaction 311,608 shares Common stock directly owned after sale

Indirect 401(k) holdings 16,858.96 shares Common stock held via 401(k) plan

10b5-1 plan adoption date November 19, 2025 Date Shafer adopted Rule 10b5-1 trading plan

Key Terms

restricted stock award, tax withholding obligations, Rule 10b5-1 trading plan, weighted average price, +1 more

5 terms

restricted stock award financial

"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.

tax withholding obligations financial

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

Rule 10b5-1 trading plan regulatory

"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.

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.

indirect ownership financial

"indirectly holds 16,858.96 shares through a 401(k) plan"

FAQ

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

What insider transaction did Gevo (GEVO) report for Andrew Shafer?

Gevo reported that officer Andrew Shafer sold 9,443 shares of common stock at a weighted average price of $1.4252. The sale was tied to tax withholding on a restricted stock vesting and executed under a pre-arranged Rule 10b5-1 trading plan.

Why did Gevo (GEVO) officer Andrew Shafer sell 9,443 shares?

The 9,443 shares sold by Andrew Shafer were to cover tax withholding obligations triggered by the vesting of a restricted stock award. The filing states this transaction was part of a previously adopted Rule 10b5-1 trading plan, indicating a pre-scheduled, tax-related sale.

How many Gevo (GEVO) shares does Andrew Shafer hold after this Form 4?

Following the reported transaction, Andrew Shafer directly holds 311,608 shares of Gevo common stock. He also indirectly owns 16,858.96 shares through a 401(k) plan, showing that his remaining equity position is substantially larger than the number of shares sold for tax purposes.

Was the Gevo (GEVO) insider sale by Andrew Shafer under a Rule 10b5-1 plan?

Yes. The filing notes the reported sales were effected under a Rule 10b5-1 trading plan adopted on November 19, 2025. Such plans pre-schedule trades, so the timing reflects the plan’s terms rather than a discretionary decision based on recent market conditions.

What price range did Gevo (GEVO) shares sell for in Andrew Shafer’s transaction?

The weighted average sale price reported was $1.4252 per share, with individual trades executed between $1.390 and $1.475 per share. The filing states the insider will provide details of the exact number of shares sold at each separate price upon request.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 06/15/2026 - 05:20 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^*

Shafer Andrew

(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 Mktg Cust & Brnd Officer

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)		9,443	D	$1.4252(2)	311,608	D
Common Stock								16,858.96	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 19, 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)