Gevo COO offloads 42,499 shares under 10b5-1 plan

Rhea-AI Filing Summary

Gevo (GEVO) Form 4: President & COO Christopher M. Ryan reported an 8 Aug 2025 sale of 42,499 common shares at a $1.2306 weighted-average price (range $1.21–$1.28). The disposition was executed under a pre-arranged Rule 10b5-1 plan and was solely to satisfy tax-withholding obligations after restricted-stock vesting.

• Post-sale holdings: 1,633,621 directly owned shares plus 22,025 shares held in a 401(k).
• Cash value of sale: ≈ $52 k—immaterial relative to both Ryan’s remaining stake and GEVO’s market capitalization.
• No derivative transactions, new grants, or option exercises were disclosed.

The transaction reduces Ryan’s direct ownership by roughly 2.5 % but does not signal strategic intent, given its tax-related nature. Because the sale was executed via a 10b5-1 plan and represents a small fraction of his position, market impact is likely minimal.

Positive

• None.

Negative

• Insider share sale, even if tax-related, can be viewed negatively by some investors monitoring leadership ownership trends.

Insights

Securities Analyst

TL;DR – Routine tax-related insider sale; negligible impact.

At ≈$52 k, the sale is financially minor and pre-scheduled under a 10b5-1 plan, limiting information value regarding management’s outlook. Ryan still holds >1.6 M shares, preserving strong alignment with shareholders. I classify the filing as not impactful for valuation or sentiment.

Corporate Governance Expert

TL;DR – Compliant transaction; governance risk low.

The use of a 10b5-1 plan and prompt Form 4 filing indicate good adherence to SEC rules. The modest share reduction (≈2.5 %) and clear disclosure that proceeds cover withholding mitigate concerns of opportunistic selling. No red flags from a governance perspective.

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^*

Ryan Christopher Michael

(Last) (First) (Middle)

C/O GEVO, INC. 345 INVERNESS DRIVE SOUTH

BUILDING C, SUITE 310

(Street)

ENGLEWOOD CO 80112

(City) (State) (Zip)

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)
	President & COO

3. Date of Earliest Transaction (Month/Day/Year)
08/05/2025

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

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

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

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	08/05/2025		S(1)		42,499	D	$1.2306(2)	1,633,621	D
Common Stock								22,025.03	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 26, 2024.

2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.21 to $1.28 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.

	/s/ E. Cabell Massey, Attorney-in-Fact	08/06/2025
	** 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.

FAQ

Why did GEVO insider Christopher Ryan sell shares on 08/05/2025?

The shares were sold to cover tax withholding due upon vesting of a restricted-stock award, per the filing.

How many GEVO shares were sold and at what price?

Ryan sold 42,499 shares at a weighted-average price of $1.2306 (range $1.21–$1.28).

Does Christopher Ryan still hold GEVO shares after the sale?

Yes. He owns 1,633,621 shares directly and 22,025 shares through the company's 401(k) plan.

Was the sale made under a Rule 10b5-1 trading plan?

Yes. The Form 4 states the transaction was executed under a 10b5-1 plan adopted on 11/26/2024.

Is this insider transaction likely to impact GEVO’s stock price?

Given its small size and tax-related nature, analysts view the sale as immaterial and not likely to affect pricing.