Gevo director sells 3,333 shares at about $1.70

Gevo, Inc. (GEVO) director Patrick R. Gruber reported selling 3,333 shares of common stock on September 3, 2026 at a weighted average price of $1.7016 per share in an open-market transaction.

Rhea-AI Filing Summary

Gevo, Inc. (GEVO) director Patrick R. Gruber reported selling 3,333 shares of common stock on September 3, 2026 at a weighted average price of $1.7016 per share in an open-market transaction. The sale was made under a Rule 10b5-1 trading plan adopted on March 10, 2026.

After this sale, Gruber holds 3,320,455 shares directly and 25,728.66 shares indirectly through a 401(k) plan, according to a plan statement dated August 25, 2026. The footnotes note small 401(k) disposals of 9.04 shares to cover administrative fees between August 6 and September 3, 2026.

Insider Trade Summary 10b5-1

Net Seller: 3,333 shares

Net Sell 2 txns

Insider Gruber Patrick R.

Role Director

Sold 3,333 shs ($6K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	3,333	$1.7016	$6K
holding	Common Stock F3	--	--	--

Holdings After Transaction: Common Stock — 3,320,455 shares (Direct); Common Stock — 25,728.66 shares (Indirect, By 401(k) Plan)

Footnotes (3)

1. F1. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on March 10, 2026.
2. F2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.695 to $1.710 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.
3. F3. Between August 6, 2026 and September 3, 2026, the reporting person disposed of 9.04 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: 3,333 shares Weighted average sale price: $1.7016 per share Direct holdings after transaction: 3,320,455 shares +4 more

7 metrics

Shares sold 3,333 shares Open-market sale of Gevo common stock on September 3, 2026

Weighted average sale price $1.7016 per share Weighted average price for the 3,333 shares sold, with trade prices from $1.695 to $1.710

Direct holdings after transaction 3,320,455 shares Common stock directly owned by Patrick R. Gruber following the September 3, 2026 sale

Indirect 401(k) holdings after transaction 25,728.66 shares Common stock held indirectly through a 401(k) plan based on an August 25, 2026 statement

401(k) disposals for fees 9.04 shares Shares disposed between August 6 and September 3, 2026 to cover 401(k) administrative fees

Rule 10b5-1 plan adoption date March 10, 2026 Date Patrick R. Gruber adopted the trading plan used for the reported sale

Sale transaction date September 3, 2026 Date of the open-market sale of 3,333 Gevo common shares

Key Terms

Rule 10b5-1 trading plan, weighted average price, 401(k) plan

3 terms

Rule 10b5-1 trading plan regulatory

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

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.

401(k) plan financial

"the issuer's common stock under the issuer's 401(k) plan to cover"

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

What did Gevo (GEVO) director Patrick R. Gruber report in this Form 4?

He reported selling 3,333 shares of Gevo common stock on September 3, 2026 at a weighted average price of $1.7016 per share in an open-market transaction under a Rule 10b5-1 trading plan.

How many GEVO shares does Patrick R. Gruber hold after this transaction?

After the reported sale, Patrick R. Gruber holds 3,320,455 shares of Gevo common stock directly and 25,728.66 shares indirectly through a 401(k) plan, based on a plan statement dated August 25, 2026.

Was the GEVO stock sale by Patrick R. Gruber under a Rule 10b5-1 plan?

Yes. The filing states the reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Patrick R. Gruber on March 10, 2026, indicating the trades were pre-arranged under that plan.

What price range were the GEVO shares sold for in this Form 4?

The $1.7016 reported price is a weighted average price. The footnote explains that the 3,333 shares were sold in multiple transactions at prices ranging from $1.695 to $1.710 per share, inclusive.

What does the Form 4 say about GEVO shares in Patrick R. Gruber’s 401(k) plan?

The Form 4 reports 25,728.66 shares held indirectly through a 401(k) plan and notes that between August 6 and September 3, 2026, 9.04 shares were disposed of to cover administrative fees.

How significant is the reported GEVO share sale relative to Patrick R. Gruber’s holdings?

The filing shows a sale of 3,333 shares while Gruber continues to hold 3,320,455 shares directly, indicating this was a relatively small transaction compared to his reported direct ownership position.

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Available on EDGAR 09/04/2026 - 05:23 PM Accepted by SEC EDGAR 09/04/2026 - 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^*

Gruber Patrick R.

(Last) (First) (Middle)

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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

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)		3,333	D	$1.7016(2)	3,320,455	D
Common Stock								25,728.66(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. The reported sales were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on March 10, 2026.

2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.695 to $1.710 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.

3. Between August 6, 2026 and September 3, 2026, the reporting person disposed of 9.04 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)