X0508 4 2026-01-10 0001680367 Shattuck Labs, Inc. STTK 0001923377 Shukla Abhinav A. C/O SHATTUCK LABS, INC. 500 W. 5TH STREET, SUITE 1200 AUSTIN TX 78701 false true false false Chief Technical Officer false Common Stock 4.75 2026-01-10 4 A false 315500 0 A 2036-01-10 Common Stock 315500 315500 D This option represents a right to purchase a total of 315,500 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. /s/ Andrew R. Neill, Attorney-in-fact for Abhinav A. Shukla 2026-01-13