Kristina Burow - 04 Jun 2026 Form 4 Insider Report for Scholar Rock Holding Corp (SRRK)

Reporting relationship: Director
Issuer ticker: SRRK
Reported as of: 04 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 08 Jun 2026, 16:52:52 UTC
Prior SEC filing: 29 May 2026
Next SEC filing: 06 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Junlin Ho, Attorney-in-Fact for Kristina Burow

Key filing fact

Kristina Burow filed Form 4 for Scholar Rock Holding Corp (SRRK) on 08 Jun 2026.

Key facts

This page summarizes Kristina Burow's Form 4 filing for Scholar Rock Holding Corp (SRRK).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 08 Jun 2026, 16:52.

Change

Previous filing in this sequence was filed on 29 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001569248 Primary reporting owner

Burow Kristina

Relationship: Director
Address: 301 BINNEY STREET, CAMBRIDGE
Signature: /s/ Junlin Ho, Attorney-in-Fact for Kristina Burow
Signature date: 08 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SRRK transaction

Common Stock

Award

Transaction value
Shares: +6,839
Change %: +6.2%
Price: $0.000000^*
Shares after: 117,710
Date: 04 Jun 2026
Ownership: Direct
Footnotes: F1, F2

SRRK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,345,711
Date: 04 Jun 2026
Ownership: See footnote
Footnotes: F3, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SRRK transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value
Shares: +4,310
Change %
Price: $0.000000^*
Shares after: 4,310
Date: 04 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 4,310
Exercise price: $45.33
Footnotes: F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote 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, 2027 or on the date of the Issuer's next Annual Meeting subject to continued service to the Issuer through such date.

Footnote F2

Consists of 110,871 shares of common stock and 6,839 RSUs.

Footnote 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.

Footnote 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.

Footnote 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.