Stephen Stout - 10 Jan 2026 Form 4 Insider Report for Shattuck Labs, Inc. (STTK)

Role: General Counsel, Corporate Secretary and Chief Ethics and Compliance Officer
Signature: /s/ Stephen Stout
Issuer symbol: STTK
Transactions as of: 10 Jan 2026
Net transactions value: -$19,727
Form type: 4
Filing time: 13 Jan 2026, 16:55:10 UTC
Previous filing: 27 Aug 2025
Next filing: 27 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Stout Stephen	General Counsel, Corporate Secretary and Chief Ethics and Compliance Officer	C/O SHATTUCK LABS, INC., 500 W. 5TH STREET, SUITE 1200, AUSTIN	/s/ Stephen Stout	13 Jan 2026	0001970664

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	STTK	Common Stock	Tax liability	$19,727	-4,153	-4.8%	$4.75	82,122	10 Jan 2026	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	STTK	Stock Option (Right to Buy)	Award	$0	+351,400		$0.000000	351,400	10 Jan 2026	Common Stock	351,400	$4.75	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This option represents a right to purchase a total of 351,400 shares of the Issuer's common stock, one quarter of which will vest on January 10, 2027, with the remaining three quarters vesting in equal monthly installments through January 10, 2030, subject to the Reporting Person's continued service to the Issuer.

Remarks:

General Counsel, Corporate Secretary and Chief Ethics and Compliance Officer