SEC Form 4 · accession 0001193125-26-297768

Shattuck Labs, Inc. · STTK

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Abhinav A. Shukla

Officer — Chief Technical Officer

Period of report

Jul 2, 2026

Accepted (ET)

Jul 7, 2026 · 7:00 pm EDT

Rule 10b5-1 plan

yes — trade under a plan

Issuer CIK

0001680367

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
Common Stock	Jul 2, 2026	M	410	$3.57	A	86,790	D
Common Stock^F2	Jul 2, 2026	S	410	$7.01	D	86,380	D
Common Stock	Jul 6, 2026	M	12,153	$3.57	A	98,533	D

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Option (Right to Buy)^F3	$3.57	Jul 2, 2026	M	410	D	—	Jan 25, 2033	Common Stock	410	26,293	D
Stock Option (Right to Buy)^F3	$3.57	Jul 6, 2026	M	12,153	D	—	Jan 25, 2033	Common Stock	12,153	14,140	D

Explanation of responses

F1Sale of shares effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026. The plan is intended to execute sales of shares received upon option exercise only as needed to fund the exercise price and estimated tax withholding associated with option exercises under the plan. Under the procedures of the administering broker, acquired shares are first sold to fund the aggregate exercise price and estimated tax withholding with respect to all possible option exercises in a particular order under the plan and only once fully funded will acquired shares be held by the Reporting Person. This transaction represents the final sale of shares needed to fully fund the exercise price and estimated tax withholding for the option exercises under this order of the plan and the remaining shares acquired upon exercise under this order will be held by the Reporting Person.
F2The price reported above is a weighted average price. The shares were sold in multiple transactions at prices ranging from $7.000 to $7.030, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.
F3This option represents a right to purchase a total of 52,200 shares of the Issuer's common stock, one quarter of which will vest on January 25, 2024, with the remaining three quarters vesting in equal monthly installments through January 25, 2027, subject to the Reporting Person's continued service to the Issuer.