Forte Biosciences director granted 18,353 RSUs

GRYSKA DAVID W reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

GRYSKA DAVID W reported acquisition or exercise transactions in this Form 4 filing.

Forte Biosciences, Inc. director David W. Gryska received a grant of 18,353 restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Forte Biosciences common stock.

The RSUs will fully vest in a single installment on the date of the first annual meeting of stockholders that occurs after May 29, 2026, as long as Gryska continues to serve as a Service Provider under the company’s 2021 Equity Incentive Plan. Following this award, he directly holds 18,353 RSUs, with no open-market purchases or sales reported in this filing.

Insider Trade Summary

Grant/Award: 18,353 shares

Grant/Award 1 txn

Insider GRYSKA DAVID W

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	18,353	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 18,353 contracts (Direct)

Footnotes (2)

1. F1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Forte Biosciences, Inc. (the "Issuer") Common Stock.
2. F2. Subject to the Reporting Person's continuing as a Service Provider (as defined in the 2021 Equity Incentive Plan) through such date, one hundred percent (100%) of the RSUs subject to the award will vest on the date of the first annual meeting of the stockholders that occurs after May 29, 2026.

Key Figures

RSUs granted: 18,353 units Underlying common shares: 18,353 shares Exercise price: $0.00 per unit +1 more

4 metrics

RSUs granted 18,353 units Grant to director David W. Gryska on May 29, 2026

Underlying common shares 18,353 shares Common stock issuable upon RSU vesting

Exercise price $0.00 per unit RSU grant has no exercise price

Holdings after transaction 18,353 RSUs Total RSUs held directly following the award

Key Terms

Restricted Stock Units, Service Provider, 2021 Equity Incentive Plan

3 terms

Restricted Stock Units financial

"Each restricted stock unit ("RSU") represents a contingent right to receive one share"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Service Provider financial

"Subject to the Reporting Person's continuing as a Service Provider through such date"

2021 Equity Incentive Plan financial

"as defined in the 2021 Equity Incentive Plan"

FAQ

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

What insider transaction did Forte Biosciences (FBRX) report for David W. Gryska?

Forte Biosciences reported that director David W. Gryska received 18,353 restricted stock units. These RSUs are a form of equity compensation and each unit represents a contingent right to receive one share of Forte Biosciences common stock, subject to vesting conditions.

How many restricted stock units did FBRX grant to director David W. Gryska?

Forte Biosciences granted David W. Gryska 18,353 restricted stock units. This entire amount is tied to future vesting and represents potential shares of common stock, rather than immediate ownership, aligning his compensation with the company’s equity over time.

When do David W. Gryska’s RSUs at Forte Biosciences (FBRX) vest?

All of David W. Gryska’s RSUs vest on the date of the first annual meeting of stockholders after May 29, 2026. Vesting requires that he continues as a Service Provider under Forte Biosciences’ 2021 Equity Incentive Plan through that meeting date.

Does the Forte Biosciences (FBRX) Form 4 show any stock sales or purchases by David W. Gryska?

The Form 4 shows no open-market stock sales or purchases by David W. Gryska. It only reports an acquisition of 18,353 restricted stock units as a grant or award, with no cash transaction price and no dispositions disclosed.

What does each RSU granted to David W. Gryska by Forte Biosciences (FBRX) represent?

Each restricted stock unit granted to David W. Gryska represents a contingent right to receive one share of Forte Biosciences common stock. The units convert into shares only upon vesting, assuming he satisfies the service-based vesting condition specified in the award.

Under which plan were the Forte Biosciences (FBRX) RSUs to David W. Gryska granted?

The RSUs were granted under Forte Biosciences’ 2021 Equity Incentive Plan. Vesting is conditioned on Gryska continuing as a Service Provider, as that term is defined in the plan, through the first annual stockholder meeting occurring after May 29, 2026.

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

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Accepted by SEC EDGAR 06/02/2026 - 04:37 PM EDT 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^*

GRYSKA DAVID W

(Last) (First) (Middle)

C/O FORTE BIOSCIENCES, INC.

3060 PEGASUS PARK DR., BUILDING 6

(Street)

DALLAS TEXAS 75247

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Forte Biosciences, Inc. [ FBRX ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

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

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

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

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
Restricted Stock Units	(1)	05/29/2026		A		18,353		(2)	(2)	Common Stock	18,353	$0	18,353	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Forte Biosciences, Inc. (the "Issuer") Common Stock.

2. Subject to the Reporting Person's continuing as a Service Provider (as defined in the 2021 Equity Incentive Plan) through such date, one hundred percent (100%) of the RSUs subject to the award will vest on the date of the first annual meeting of the stockholders that occurs after May 29, 2026.

	/s/ Paul A. Wagner, Ph.D., as Attorney-in-Fact	06/02/2026
	** 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.
* Form 4: SEC 1474 (03-26)