Kristina Burow - May 22, 2025 Form 4 Insider Report for Scholar Rock Holding Corp (SRRK)

Role: Director
Signature: /s/ Junlin Ho, Attorney-in-Fact for Kristina Burow
Stock symbol: SRRK
Transactions as of: May 22, 2025
Transactions value $: $0
Form type: 4
Date filed: 5/23/2025, 04:45 PM
Previous filing: May 22, 2025
Next filing: May 30, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Burow Kristina	Director	301 BINNEY STREET, CAMBRIDGE	/s/ Junlin Ho, Attorney-in-Fact for Kristina Burow	2025-05-23	0001569248

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SRRK	Common Stock	Award	$0	+7.63K	+40.51%	$0.00	26.5K	May 22, 2025	Direct	F1, F2
holding	SRRK	Common Stock						2.35M	May 22, 2025	See footnote	F3, F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SRRK	Stock Option (Right to Buy)	Award	$0	+9.21K		$0.00	9.21K	May 22, 2025	Common Stock	9.21K	$30.46	Direct	F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit ("RSU") represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock. The shares subject to this RSU vest on the earlier of June 15, 2026 or on the date of the Issuer's next Annual Meeting subject to continued service to the Issuer through such date.
F2	Consists of 18,839 shares of Common Stock and 7,632 RSUs.
F3	The shares are held by ARCH Venture Fund VIII, L.P. ("ARCH VIII"). ARCH Venture Partners VIII, L.P. ("GPLP"), as the sole general partner of ARCH VIII, may be deemed to beneficially own the shares held by ARCH VIII. ARCH Venture Partners VIII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. The GPLP and GPLLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein.
F4	The managing directors of the GPLLC are Keith L. Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the shares held by ARCH VIII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein. The Reporting Person is a managing director of the GPLP. The Reporting Person owns an interest in the GPLP but does not have voting or investment control over the shares held by ARCH VIII. The Reporting Person disclaims ownership of such shares, except to the extent of her pecuniary interest therein.
F5	Options to vest and become fully exercisable on the earlier of the first anniversary following the date of grant or on the date of the Issuer's next Annual Meeting subject to continued service to the Issuer through such date.