Kristina Burow - 01 Jul 2026 Form 4 Insider Report for Scholar Rock Holding Corp (SRRK)

Reporting relationship: Director
Issuer ticker: SRRK
Reported as of: 01 Jul 2026
Net transaction value: -$164,064
SEC form: 4
Accepted by SEC: 06 Jul 2026, 16:30:25 UTC
Prior SEC filing: 08 Jun 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 06 Jul 2026.

Key facts

This page summarizes Kristina Burow's Form 4 filing for Scholar Rock Holding Corp (SRRK).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 06 Jul 2026, 16:30.

Change

Previous filing in this sequence was filed on 08 Jun 2026.
Current net transaction value: -$164,064.

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: 06 Jul 2026

Reported non-derivative transactions

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

SRRK transaction

Common Stock

Sale

Transaction value: $112,605
Shares: -2,105
Change %: -1.8%
Price: $53.49
Shares after: 115,605
Date: 01 Jul 2026
Ownership: Direct
Footnotes: F1, F2, F3

SRRK transaction

Common Stock

Sale

Transaction value: $51,459
Shares: -948
Change %: -0.82%
Price: $54.28
Shares after: 114,657
Date: 01 Jul 2026
Ownership: Direct
Footnotes: F1, F4, F5

SRRK holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,345,711
Date: 01 Jul 2026
Ownership: See footnote
Footnotes: F6, F7

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 7 footnotes

Footnote F1

This sale was effected pursuant to a Rule 10b-5-1 trading plan adopted on March 31, 2026 to cover tax obligations upon the vesting and settlement of restricted stock units (RSUs).

Footnote F2

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $53.050 to $54.030, inclusive. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

Footnote F3

Consists of 108,766 shares of common stock and 6,839 RSUs.

Footnote F4

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $54.040 to $54.795, inclusive. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

Footnote F5

Consists of 107,818 shares of common stock and 6,839 RSUs.

Footnote F6

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 F7

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.