Stephen Stout

CIK: 0001970664

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)1 (12.5%)

Derivative conversions

Awards (A)4 (50.0%)

Compensation grants

Other (G, F, J, C, D, …)3 (37.5%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

STTK

Shattuck Labs, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (8 total)

STTK
Shattuck Labs, Inc.
May 15, 2026
Exercise(M)
Warrants (Right to Buy)
Direct
12.8K shares-
STTK
Shattuck Labs, Inc.
May 15, 2026
Award(A)
Direct
12.8K shares at avg. $1.08$14K
STTK
Shattuck Labs, Inc.
May 10, 2026
Tax Payment(F)
Direct
968 shares at avg. $6.85$7K
STTK
Shattuck Labs, Inc.
Jan 25, 2026
Tax Payment(F)
Direct
593 shares at avg. $4.15$2K
STTK
Shattuck Labs, Inc.
Jan 10, 2026
Tax Payment(F)
Direct
4.2K shares at avg. $4.75$20K
STTK
Shattuck Labs, Inc.
Jan 10, 2026
Award(A)
Stock Option (Right to Buy)
Direct
351.4K shares-
STTK
Shattuck Labs, Inc.
Aug 25, 2025
Award(A)
Direct
12.8K shares at avg. $0.87$11K
STTK
Shattuck Labs, Inc.
Jan 28, 2025
Award(A)
Stock Option (Right to Buy)
Direct
177K shares-

		Type	Shares	Price		Ownership
May 15, 2026	STTK Shattuck Labs, Inc.	Exercise(M) Warrants (Right to Buy)	12,805	-	-	Direct
May 15, 2026	STTK Shattuck Labs, Inc.	Award(A)	12,805	$1.08	$13,888	Direct
May 10, 2026	STTK Shattuck Labs, Inc.	Tax Payment(F)	968	$6.85	$6,631	Direct
Jan 25, 2026	STTK Shattuck Labs, Inc.	Tax Payment(F)	593	$4.15	$2,461	Direct
Jan 10, 2026	STTK Shattuck Labs, Inc.	Tax Payment(F)	4,153	$4.75	$19,727	Direct
Jan 10, 2026	STTK Shattuck Labs, Inc.	Award(A) Stock Option (Right to Buy)	351,400	-	-	Direct
Aug 25, 2025	STTK Shattuck Labs, Inc.	Award(A)	12,805	$0.87	$11,111	Direct
Jan 28, 2025	STTK Shattuck Labs, Inc.	Award(A) Stock Option (Right to Buy)	177,000	-	-	Direct

1-8 of 8 transactions

About Stout Stephen

Stout Stephen (SEC CIK 0001970664) files insider reports with the SEC as Officer of Shattuck Labs, Inc. (STTK).

Signal8 holds 6 ownership filings by Stout Stephen, all Form 4s, filed between Jan 28, 2025 and May 18, 2026. Those filings report 8 transactions, from Jan 28, 2025 to May 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Stout Stephen's filings is in AUSTIN, TX.

Recent filings by Stout Stephen

May 15, 2026: Option exercise of STTK derivative securities (Form 4, code M).
May 15, 2026: Grant or award of STTK shares (Form 4, code A).
May 10, 2026: Tax withholding of STTK shares (Form 4, code F).
Jan 25, 2026: Tax withholding of STTK shares (Form 4, code F).
Jan 10, 2026: Tax withholding of STTK shares (Form 4, code F).

Other insiders filing for Shattuck Labs, Inc. (STTK)

Shukla Abhinav A., Chief Technical Officer
Pandite Arundathy N., Chief Medical Officer
Ashiya Mona, Director
ORBIMED ADVISORS LLC, Director
SIEGALL CLAY B, Director
Baker Daniel G., Director

How to read Form 4 transaction codes