Shattuck Labs CEO gets 1.55M stock options

Shattuck Labs, Inc. reported that Chief Executive Officer and director Taylor Schreiber received a new stock option grant on January 10, 2026.

Rhea-AI Filing Summary

Shattuck Labs, Inc. reported that Chief Executive Officer and director Taylor Schreiber received a new stock option grant on January 10, 2026. The option gives him the right to buy 1,548,300 shares of Shattuck Labs common stock at an exercise price of $4.75 per share and expires on January 10, 2036.

According to the vesting schedule, 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, as long as he continues serving the company. After this grant, he beneficially owns 1,548,300 derivative securities directly.

Insider Trade Summary

Grant/Award: 1,548,300 shares

Grant/Award 1 txn

Insider Schreiber Taylor

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	1,548,300	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 1,548,300 contracts (Direct)

Footnotes (1)

1. F1. This option represents the right to purchase a total of 1,548,300 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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Shattuck Labs (STTK) disclose in this Form 4?

The company disclosed a stock option grant to Chief Executive Officer and director Taylor Schreiber covering 1,548,300 shares of common stock.

What is the exercise price and size of Taylor Schreiber's new Shattuck Labs stock option?

The option allows the purchase of 1,548,300 shares of Shattuck Labs common stock at an exercise price of $4.75 per share.

When was the Shattuck Labs CEO stock option granted and when does it expire?

The stock option was granted on January 10, 2026 and is scheduled to expire on January 10, 2036.

How does Taylor Schreiber's Shattuck Labs option vest over time?

One quarter of the option vests on January 10, 2027, and the remaining three quarters vest in equal monthly installments through January 10, 2030, subject to his continued service.

How many derivative securities does the Shattuck Labs CEO beneficially own after this transaction?

After this grant, Taylor Schreiber beneficially owns 1,548,300 derivative securities related to Shattuck Labs, held directly.

Is the reported Shattuck Labs stock option held directly or indirectly by the CEO?

The Form 4 shows the 1,548,300-share stock option as held directly by Taylor Schreiber.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 01/13/2026 - 04:40 PM Learn about SEC filing dates

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^*

Schreiber Taylor

(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)

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

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		1,548,300		(1)	01/10/2036	Common Stock	1,548,300	$0	1,548,300	D

Explanation of Responses:

1. This option represents the right to purchase a total of 1,548,300 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 Taylor Schreiber	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.