STOCK TITAN

Gevo (GEVO) officer sells 5,550 shares after option exercise

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Gevo, Inc. executive Andrew Shafer, Chief Customer Marketing & Brand Officer, exercised stock options for 5,550 shares of common stock at $0.71 per share and on the same day sold 5,550 shares at a weighted average price of $2.7076 per share. The transactions were carried out under a Rule 10b5-1 trading plan adopted on November 19, 2025, indicating they were pre-planned. Following these moves, Shafer directly holds 270,823 shares of common stock and indirectly holds 16,871.52 shares through a 401(k) plan, where 6.17 shares were disposed between March 10 and April 1, 2026 to cover administrative fees, showing the net sale is small relative to his remaining stake.

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Insider Shafer Andrew
Role Chief Cust Mkt & Brnd Officer
Sold 5,550 shs ($15K)
Type Security Shares Price Value
Exercise Stock Option 5,550 $0.00 --
Exercise Common Stock 5,550 $0.71 $4K
Sale Common Stock 5,550 $2.7076 $15K
holding Common Stock -- -- --
Holdings After Transaction: Stock Option — 191,400 shares (Direct); Common Stock — 276,373 shares (Direct); Common Stock — 16,871.52 shares (Indirect, By 401(k) Plan)
Footnotes (1)
  1. The reported transactions were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on November 19, 2025. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.69 to $2.73 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. Between March 10, 2026 and April 1, 2026, the reporting person disposed of 6.17 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 March 25, 2026. The option became exercisable in three equal annual installments beginning on May 22, 2025.
Options exercised 5,550 shares at $0.71 Stock option exercise on April 1, 2026
Shares sold 5,550 shares at $2.7076 Open-market sale on April 1, 2026
Direct holdings after 270,823 shares Common stock held directly after transactions
Indirect 401(k) holdings 16,871.52 shares Common stock held via 401(k) plan
401(k) shares disposed 6.17 shares Disposed between March 10 and April 1, 2026 for fees
Option expiration May 21, 2034 Expiration date of exercised stock option
Rule 10b5-1 trading plan financial
"The reported transactions were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on November 19, 2025."
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 reporting person disposed of 6.17 shares of the issuer's common stock 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.
stock option financial
"The option became exercisable in three equal annual installments beginning on May 22, 2025."
A stock option is a contract that gives you the right to buy or sell a company's stock at a specific price within a certain time frame. People use them to potentially make money if the stock's price moves favorably or to protect against losses. It's like holding a coupon that can be used to buy or sell stock at a set price later on.
open-market sale financial
"Sale in open market or private transaction"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
SEC Form 4
FORM 4UNITED 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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Cust Mkt & Brnd Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock04/01/2026M(1)5,550A$0.71276,373D
Common Stock04/01/2026S5,550D$2.7076(2)270,823D
Common Stock16,871.52(3)IBy 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option$0.7104/01/2026M5,550 (4)05/21/2034Common Stock5,550$0191,400D
Explanation of Responses:
1. The reported transactions 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 $2.69 to $2.73 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 March 10, 2026 and April 1, 2026, the reporting person disposed of 6.17 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 March 25, 2026.
4. The option became exercisable in three equal annual installments beginning on May 22, 2025.
/s/ E. Cabell Massey, Attorney-in-Fact04/02/2026
** Signature of Reporting PersonDate
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)

FAQ

What did Gevo (GEVO) executive Andrew Shafer report in this Form 4?

Andrew Shafer reported exercising options for 5,550 shares of Gevo common stock at $0.71 and then selling 5,550 shares at a weighted average of $2.7076. These transactions were executed under a Rule 10b5-1 trading plan and leave him with a substantial remaining position.

How many Gevo (GEVO) shares does Andrew Shafer hold after these transactions?

After the reported transactions, Andrew Shafer directly owns 270,823 shares of Gevo common stock and indirectly holds 16,871.52 shares through a 401(k) plan. This indicates the 5,550-share sale represents only a small portion of his overall holdings.

Was the Gevo (GEVO) share sale by Andrew Shafer pre-planned?

Yes. The filing states the transactions were effected under a Rule 10b5-1 trading plan adopted on November 19, 2025. Such plans pre-schedule trades, suggesting the 5,550-share sale reflects a planned liquidity event rather than a spontaneous trading decision.

At what prices did Andrew Shafer exercise and sell Gevo (GEVO) shares?

Andrew Shafer exercised stock options at an exercise price of $0.71 per share and sold 5,550 shares at a weighted average price of $2.7076. The filing notes individual sale prices ranged from $2.69 to $2.73 per share during these transactions.

What happened to Andrew Shafer’s Gevo (GEVO) 401(k) holdings?

The filing notes that between March 10, 2026 and April 1, 2026, Shafer disposed of 6.17 shares of Gevo common stock in the company’s 401(k) plan to cover administrative fees, based on a plan statement dated March 25, 2026.

What type of derivative security did Andrew Shafer exercise at Gevo (GEVO)?

Andrew Shafer exercised a stock option covering 5,550 underlying shares of Gevo common stock at $0.71 per share. The option became exercisable in three equal annual installments beginning on May 22, 2025 and carried an expiration date of May 21, 2034.