Shattuck Labs (STTK) CFO granted 549,800 options vesting to 2030

Rhea-AI Filing Summary

Shattuck Labs, Inc. Chief Financial Officer Andrew R. Neill reported new equity compensation and a related share withholding. On January 10, 2026, he received a stock option to purchase 549,800 shares of Shattuck Labs common stock at an exercise price of $4.75 per share. According to the vesting terms, one quarter of the option will vest on January 10, 2027, with the remaining three quarters vesting in equal monthly installments through January 10, 2030, contingent on his continued service.

On the same date, 6,660 shares of common stock were disposed of at $4.75 per share in a transaction coded "F," which typically reflects shares withheld to cover taxes upon vesting or exercise. After this transaction, Neill directly beneficially owned 230,813 shares of common stock and 549,800 stock options.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Neill Andrew R

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	549,800	$0.00	--
Tax Withholding	Common Stock	6,660	$4.75	$32K

Holdings After Transaction: Stock Option (Right to Buy) — 549,800 shares (Direct); Common Stock — 230,813 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Neill Andrew R

(Last) (First) (Middle)

C/O SHATTUCK LABS, INC.

500 W. 5TH STREET, SUITE 1200

(Street)

AUSTIN TX 78701

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Shattuck Labs, Inc. [ STTK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/10/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/10/2026		F		6,660	D	$4.75	230,813	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$4.75	01/10/2026		A		549,800		(1)	01/10/2036	Common Stock	549,800	$0.00	549,800	D

Explanation of Responses:

1. This option represents a right to purchase a total of 549,800 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	01/13/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider activity did Shattuck Labs (STTK) report for its CFO?

Shattuck Labs reported that its Chief Financial Officer, Andrew R. Neill, received a stock option grant for 549,800 shares of common stock at an exercise price of $4.75 per share on January 10, 2026, and had a related share disposition of 6,660 shares of common stock coded as an "F" transaction at $4.75 per share.

How many stock options were granted to the Shattuck Labs CFO and at what price?

The CFO, Andrew R. Neill, was granted a stock option (right to buy) covering 549,800 shares of Shattuck Labs common stock with an exercise price of $4.75 per share on January 10, 2026.

What is the vesting schedule for Andrew R. Neill’s 549,800 Shattuck Labs stock options?

The option for 549,800 shares vests over time: one quarter vests on January 10, 2027, and the remaining three quarters vest in equal monthly installments through January 10, 2030, subject to his continued service with the company.

What does the 6,660-share Form 4 transaction for Shattuck Labs’ CFO represent?

The Form 4 lists a transaction in 6,660 shares of common stock on January 10, 2026 at $4.75 per share, coded "F", which denotes a transaction such as shares withheld to satisfy tax obligations in connection with equity compensation.

How many Shattuck Labs shares does the CFO own after the reported transactions?

Following the January 10, 2026 transactions, Andrew R. Neill directly beneficially owned 230,813 shares of Shattuck Labs common stock and 549,800 stock options to purchase additional shares.

Is the Shattuck Labs CFO a director or 10% owner according to this Form 4?

According to the filing, Andrew R. Neill is reported as an officer of Shattuck Labs with the title Chief Financial Officer, and he is not listed as a director or a 10% owner.