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

Role
Chief Business Officer
Signature
/s/ Andrew R. Neill, Attorney-in-fact for Casi DeYoung
Issuer symbol
STTK
Transactions as of
10 Jan 2026
Net transactions value
-$27,070
Form type
4
Filing time
13 Jan 2026, 16:50:54 UTC
Previous filing
28 Jan 2025
Next filing
27 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
DeYoung Casi Chief Business Officer C/O SHATTUCK LABS, INC., 500 W. 5TH STREET, SUITE 1200, AUSTIN /s/ Andrew R. Neill, Attorney-in-fact for Casi DeYoung 13 Jan 2026 0001652066

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction STTK Common Stock Tax liability $27,070 -5,699 -7% $4.75 75,766 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 Common Stock Award $0 +381,600 $0.000000 381,600 10 Jan 2026 Common Stock 381,600 $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 381,600 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.