Scholar Rock CEO gifts 36,652 shares to family trust

The reported position included common stock and RSUs subject to time-based or performance- and time-based vesting conditions.

Rhea-AI Filing Summary

Scholar Rock Holding Corp (symbol: SRRK) is the issuer of record for a Form 4 filing submitted to the SEC. Hallal David reported disposition transactions in this Form 4 filing.

Scholar Rock Holding Corp (SRRK) Chief Executive Officer David Hallal transferred 36,652 common shares to The Hallal Family Irrevocable Trust-2021 on September 21, 2026, for no consideration. Hallal's reported post-transaction position was 1,602,382, comprising common stock and RSUs. The Hallal Family Irrevocable Trust-2021 reported 36,652 shares, while The Hallal Family Irrevocable Trust-2012 held 205,000 shares.

Insider Trade Summary

36,652 shares gifted

Gift 3 txns

Insider Hallal David

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Gift	Common Stock F1, F2	36,652	$0.00	$0.00
holding	Common Stock F1	--	--	--
holding	Common Stock F3	--	--	--

Holdings After Transaction: Common Stock — 1,602,382 shares (Direct); Common Stock — 36,652 shares (Indirect, By The Hallal Family Irrevocable Trust - 2021); Common Stock — 205,000 shares (Indirect, By The Hallal Family Irrevocable Trust - 2012)

Footnotes (3)

1. F1. On September 21, 2026, the reporting person transferred 36,652 shares of the Issuer's Common Stock to The Hallal Family Irrevocable Trust-2021 (the "Hallal 2021 Trust") for no consideration. The reporting person and his spouse serve as trustees of the Hallal 2021 Trust. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.
2. F2. Consists of 161,878 shares of common stock, 315,504 RSUs subject to time-based vesting conditions and 1,125,000 RSUs subject to performance- and time-based vesting conditions.
3. F3. Shares owned by The Hallal Family Irrevocable Trust - 2012 dated November 19, 2012 (the "Hallal 2012 Trust"). The reporting person's spouse serves as a trustee of the Hallal 2012 Trust. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

Key Figures

Gift transfer: 36,652 shares Reported post-transaction position: 1,602,382 shares Common stock: 161,878 shares +3 more

6 metrics

Gift transfer 36,652 shares Transferred to The Hallal Family Irrevocable Trust-2021 on September 21, 2026, for no consideration

Reported post-transaction position 1,602,382 shares David Hallal; includes common stock and RSUs

Common stock 161,878 shares Component of Hallal's reported post-transaction position

Time-based RSUs 315,504 RSUs Subject to time-based vesting conditions

Performance- and time-based RSUs 1,125,000 RSUs Subject to performance- and time-based vesting conditions

Hallal Family Irrevocable Trust-2012 holdings 205,000 shares Reported holdings

Key Terms

RSUs, time-based vesting conditions, performance- and time-based vesting conditions, pecuniary interest

4 terms

RSUs financial

"315,504 RSUs subject to time-based vesting conditions"

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

time-based vesting conditions financial

"315,504 RSUs subject to time-based vesting conditions"

performance- and time-based vesting conditions financial

"1,125,000 RSUs subject to performance- and time-based vesting conditions"

pecuniary interest regulatory

"except to the extent of his pecuniary interest therein"

FAQ

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

How many SRRK shares did David Hallal transfer, and to whom?

David Hallal transferred 36,652 common shares to The Hallal Family Irrevocable Trust-2021 on September 21, 2026, for no consideration.

What made up David Hallal's reported SRRK position after the transfer?

It comprised 161,878 common shares, 315,504 RSUs subject to time-based vesting conditions, and 1,125,000 RSUs subject to performance- and time-based vesting conditions.

Was David Hallal's SRRK transfer reported under a Rule 10b5-1 plan?

No Rule 10b5-1 plan is reported for the transaction.

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

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Available on EDGAR 09/23/2026 - 04:36 PM Accepted by SEC EDGAR 09/23/2026 - 04:36 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^*

Hallal David

(Last) (First) (Middle)

301 BINNEY STREET

(Street)

CAMBRIDGE MASSACHUSETTS 02142

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Scholar Rock Holding Corp [ SRRK ]

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/21/2026

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
Common Stock	09/21/2026		G		36,652(1)	D	$0.00	1,602,382(2)	D
Common Stock								36,652(1)	I	By The Hallal Family Irrevocable Trust - 2021
Common Stock								205,000(3)	I	By The Hallal Family Irrevocable Trust - 2012

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

Explanation of Responses:

1. On September 21, 2026, the reporting person transferred 36,652 shares of the Issuer's Common Stock to The Hallal Family Irrevocable Trust-2021 (the "Hallal 2021 Trust") for no consideration. The reporting person and his spouse serve as trustees of the Hallal 2021 Trust. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

2. Consists of 161,878 shares of common stock, 315,504 RSUs subject to time-based vesting conditions and 1,125,000 RSUs subject to performance- and time-based vesting conditions.

3. Shares owned by The Hallal Family Irrevocable Trust - 2012 dated November 19, 2012 (the "Hallal 2012 Trust"). The reporting person's spouse serves as a trustee of the Hallal 2012 Trust. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

	/s/ Junlin Ho, Attorney-in-Fact for David Hallal	09/23/2026
	** 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)