STOCK TITAN

Officer at Shattuck Labs (NASDAQ: STTK) exercises warrants for 12,805 shares

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

Rhea-AI Filing Summary

Shattuck Labs, Inc. officer Stephen Stout reported acquiring additional equity through a private placement-related transaction. He acquired 12,805 shares of common stock and exercised accompanying warrants for 12,805 shares at an exercise price of $1.0846 per share, bringing his direct holdings to 93,366 common shares. These securities stem from a prior securities purchase agreement where common stock and warrants were originally issued together at a combined price of $0.8677 per share and warrant, with the warrants exercisable during a period tied to clinical data milestones for SL-325.

Positive

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Negative

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Insider Stout Stephen
Role See Remarks
Type Security Shares Price Value
Exercise Warrants (Right to Buy) 12,805 $0.00 --
Grant/Award Common Stock 12,805 $1.0846 $14K
Holdings After Transaction: Warrants (Right to Buy) — 0 shares (Direct, null); Common Stock — 93,366 shares (Direct, null)
Footnotes (1)
  1. On August 4, 2025, the Issuer entered into a securities purchase agreement (the "Purchase Agreement") with certain accredited investors, including the Reporting Person. Pursuant to the terms of the Purchase Agreement, the Issuer in a private placement, which closed on August 25, 2025, issued and sold to the Reporting Person 12,805 shares of the Issuer's common stock and accompanying warrants (the "Warrants") to purchase up to an aggregate of 12,805 shares of the Issuer's common stock at a combined price per share and accompanying Warrant of $0.8677. The Warrants are exercisable at any time on or after the original issuance date until the 30th day following the date on which the data from the single ascending dose and multiple ascending dose portions of the Issuer's Phase 1 clinical trial of SL-325, including receptor occupancy and safety data, and the design of the planned Phase 2 clinical trial(s) have been announced publicly.
Common shares acquired 12,805 shares Non-derivative acquisition of common stock
Warrants exercised 12,805 warrants Derivative exercise into common stock
Warrant exercise price $1.0846 per share Conversion or exercise price for underlying common stock
Post-transaction holdings 93,366 shares Total common shares directly held after transactions
Original combined price $0.8677 per unit Per share and accompanying warrant in private placement
Underlying warrant shares 12,805 shares Common stock underlying exercised warrants
securities purchase agreement financial
"the Issuer entered into a securities purchase agreement (the "Purchase Agreement") with certain accredited investors"
A securities purchase agreement is a written contract between a buyer and a seller outlining the terms for buying or selling financial assets such as stocks or bonds. It specifies details like the price, quantity, and conditions of the transaction, similar to a shopping list with agreed-upon terms. For investors, it provides clarity and legal protection when transferring ownership of these financial instruments.
Warrants financial
"accompanying warrants (the "Warrants") to purchase up to an aggregate of 12,805 shares"
Warrants are special documents that give you the right to buy a company's stock at a set price before a certain date. They are often used as a way for companies to attract investors or raise money, and their value can increase if the company's stock price goes up.
Phase 1 clinical trial medical
"single ascending dose and multiple ascending dose portions of the Issuer's Phase 1 clinical trial of SL-325"
A phase 1 clinical trial is the first stage of testing a new drug or treatment in people, typically involving a small group to assess safety, how the body handles the treatment, and appropriate dosing. For investors, phase 1 results are an early risk check — like a test drive that can reveal fatal flaws or promising signals — and they often cause big changes in a drug’s perceived value and the company’s prospects.
multiple ascending dose medical
"single ascending dose and multiple ascending dose portions of the Issuer's Phase 1 clinical trial"
A multiple ascending dose is a method used in testing new medicines where small groups of people receive gradually larger amounts of the drug over time. This approach helps researchers find the safest and most effective dose without causing too many side effects. For investors, it signals ongoing steps in drug development that can impact a company's potential success or approval prospects.
Phase 2 clinical trial(s) medical
"and the design of the planned Phase 2 clinical trial(s) have been announced publicly"
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*
Stout Stephen

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
See Remarks
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026
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 Stock05/15/2026A12,805A$1.084693,366D
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
Warrants (Right to Buy)$1.084605/15/2026M12,805 (2) (2)Common Stock12,805(1)0D
Explanation of Responses:
1. On August 4, 2025, the Issuer entered into a securities purchase agreement (the "Purchase Agreement") with certain accredited investors, including the Reporting Person. Pursuant to the terms of the Purchase Agreement, the Issuer in a private placement, which closed on August 25, 2025, issued and sold to the Reporting Person 12,805 shares of the Issuer's common stock and accompanying warrants (the "Warrants") to purchase up to an aggregate of 12,805 shares of the Issuer's common stock at a combined price per share and accompanying Warrant of $0.8677.
2. The Warrants are exercisable at any time on or after the original issuance date until the 30th day following the date on which the data from the single ascending dose and multiple ascending dose portions of the Issuer's Phase 1 clinical trial of SL-325, including receptor occupancy and safety data, and the design of the planned Phase 2 clinical trial(s) have been announced publicly.
Remarks:
General Counsel, Corporate Secretary and Chief Ethics and Compliance Officer
/s/ Stephen Stout05/18/2026
** 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 insider transaction did Stephen Stout report at Shattuck Labs (STTK)?

Stephen Stout reported acquiring more equity in Shattuck Labs. He obtained 12,805 common shares and exercised warrants for another 12,805 shares, consolidating his position through a private placement-related transaction linked to earlier financing terms.

How many Shattuck Labs (STTK) shares does Stephen Stout hold after this Form 4?

After these transactions, Stephen Stout directly holds 93,366 Shattuck Labs common shares. This total reflects the addition of 12,805 shares associated with warrants originally issued alongside common stock in a prior securities purchase agreement.

What was the exercise price of the Shattuck Labs (STTK) warrants in this filing?

The warrants exercised by Stephen Stout carried an exercise price of $1.0846 per share. They related to 12,805 underlying common shares and were originally issued together with common stock in a private placement financing arrangement.

How were the Shattuck Labs (STTK) common stock and warrants originally issued to Stephen Stout?

The common stock and warrants were originally issued under a securities purchase agreement. Stout received 12,805 common shares and accompanying warrants at a combined price of $0.8677 per share and warrant in a private placement that closed on August 25, 2025.

What clinical trial milestone affects the Shattuck Labs (STTK) warrants mentioned here?

The warrants are exercisable from their original issuance date until 30 days after public announcement of Phase 1 SL-325 dose-escalation data and the design of planned Phase 2 trials. That clinical data window defines the outside limit for exercising these warrants.