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  4. [Form 4] Shattuck Labs, Inc. Insider Trading Activity

Director at Shattuck Labs (NASDAQ: STTK) awarded 81,000 stock options at $5.95

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

Rhea-AI Filing Summary

Shattuck Labs, Inc. director George Golumbeski received a compensation-related grant of stock options covering 81,000 shares of common stock. The options have an exercise price of $5.95 per share and expire on May 29, 2036. They vest in full on the earlier of the one-year anniversary of the May 29, 2026 grant date or immediately before the company’s next annual meeting of stockholders, subject to his continued service. Following this grant, he holds 81,000 stock options directly.

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Insider Golumbeski George
Role null
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) 81,000 $0.00 --
Holdings After Transaction: Stock Option (Right to Buy) — 81,000 shares (Direct, null)
Footnotes (1)
  1. [object Object]
Options granted 81,000 options Stock Option (Right to Buy) grant on May 29, 2026
Exercise price $5.95 per share Conversion or exercise price for granted options
Expiration date May 29, 2036 Option term end for granted stock options
Underlying shares 81,000 shares Common stock underlying the stock options
Post‑grant option holdings 81,000 options Total derivative securities owned after transaction
Stock Option (Right to Buy) financial
"security_title: "Stock Option (Right to Buy)""
Grant, award, or other acquisition financial
"transaction_code_description: "Grant, award, or other acquisition""
exercise price financial
"conversion_or_exercise_price: "5.9500""
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
annual meeting of stockholders financial
"vest in full on the earlier of the one-year anniversary ... or immediately prior to the Issuer's next annual meeting of stockholders"
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Form 4 Insider Transactions: What Each Field Means →
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).
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*
Golumbeski George
(Last)(First)(Middle)
C/O SHATTUCK LABS, INC.
500 W. 5TH STREET, SUITE 1200
(Street)
AUSTIN TEXAS 78701
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
Shattuck Labs, Inc. [ STTK ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026		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
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 (Right to Buy)$5.9505/29/2026A81,000 (1)05/29/2036Common Stock81,000$081,000D
Explanation of Responses:
1. This option represents the right to purchase a total of 81,000 shares of the Issuer's common stock, which will vest in full on the earlier of the one-year anniversary of the grant date or immediately prior to the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service to the Issuer.
/s/ Andrew R. Neill, Attorney-in-Fact for George Golumbeski06/02/2026
** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What did Shattuck Labs (STTK) director George Golumbeski report in this Form 4?

George Golumbeski reported receiving a grant of stock options for 81,000 shares of Shattuck Labs common stock. These options are a compensation-related award, not an open-market purchase or sale, and are exercisable at a fixed price set in the grant.

How many Shattuck Labs (STTK) shares are covered by the new stock options?

The grant covers stock options on 81,000 shares of Shattuck Labs common stock. This entire amount represents newly awarded options, and after the transaction Golumbeski directly holds options for 81,000 underlying shares according to the Form 4 disclosure.

What is the exercise price and expiration date of George Golumbski’s STTK stock options?

The stock options have an exercise price of $5.95 per share and expire on May 29, 2036. This means he can choose to buy shares at $5.95 any time before the expiration date, once the options are fully vested.

When do George Golumbeski’s Shattuck Labs (STTK) stock options vest?

The 81,000 stock options vest in full on the earlier of the one-year anniversary of the May 29, 2026 grant date or immediately prior to Shattuck Labs’ next annual stockholder meeting, assuming Golumbeski continues serving the company until that vesting event.

Is this STTK Form 4 an open-market trade or a compensation award?

This Form 4 reflects a compensation award, not an open-market trade. The transaction code is “A” for a grant, and the options were granted at no purchase cost as a right to buy shares later at the fixed exercise price.