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

Reporting relationship: General Counsel, Corporate Secretary and Chief Ethics and Compliance Officer
Issuer ticker: STTK
Reported as of: 10 Jan 2026
Net transaction value: -$19,727
SEC form: 4
Accepted by SEC: 13 Jan 2026, 16:55:10 UTC
Prior SEC filing: 27 Aug 2025
Next SEC filing: 27 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ Stephen Stout

Key filing fact

Stephen Stout filed Form 4 for Shattuck Labs, Inc. (STTK) on 13 Jan 2026.

Key facts

This page summarizes Stephen Stout's Form 4 filing for Shattuck Labs, Inc. (STTK).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 13 Jan 2026, 16:55.

Change

Previous filing in this sequence was filed on 27 Aug 2025.
Current net transaction value: -$19,727.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001970664 Primary reporting owner

Stout Stephen

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

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

STTK transaction

Common Stock

Tax liability

Transaction value: $19,727
Shares: -4,153
Change %: -4.8%
Price: $4.75
Shares after: 82,122
Date: 10 Jan 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

STTK transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value: $0
Shares: +351,400
Change %
Price: $0.000000
Shares after: 351,400
Date: 10 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 351,400
Exercise price: $4.75
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote 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.

SEC remarks

General Counsel, Corporate Secretary and Chief Ethics and Compliance Officer