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Scholar Rock Holding Corp·4

Apr 24, 4:05 PM ET

Burow Kristina 4

4 · Scholar Rock Holding Corp · Filed Apr 24, 2026

Research Summary

AI-generated summary of this filing

Updated

Scholar Rock (SRRK) Director Kristina Burow Exercises Options

What Happened

  • Kristina Burow, a director of Scholar Rock Holding Corp (SRRK), exercised multiple option/derivative awards on April 23, 2026 to acquire a total of 89,800 common shares, paying about $820,324 in aggregate. The tranches reported were:
    • 7,800 shares @ $26.78 = $208,884
    • 28,000 shares @ $4.75 = $133,000
    • 36,000 shares @ $9.11 = $327,960
    • 18,000 shares @ $8.36 = $150,480
  • The filing also shows corresponding disposals of the derivative instruments at $0, which reflects conversion/exercise of those derivatives into common stock rather than a sale of the shares. No sale of the acquired shares is reported in this Form 4.

Key Details

  • Transaction date: April 23, 2026; Form 4 filed April 24, 2026 (timely).
  • Total shares acquired: 89,800; total cash paid: $820,324.
  • Shares owned after transactions (per filing footnote): 103,239 common shares and 7,632 RSUs.
  • Transaction code: M (exercise/conversion of derivative).
  • Relevant footnotes note holdings and vesting history of various options/awards; the filing does not indicate a cashless sell-to-cover — payment amounts are shown.

Context

  • For retail investors: an option exercise like this increases the insider’s direct share ownership but is not by itself a buy in the open market sentiment sense. Because the filing shows payment of exercise prices (not an immediate sale), Burow added net common shares to her holdings rather than cashing out.
  • The Form 4 appears timely (filed the next day), and the disclosure is straightforward: exercised options converted into shares, with no concurrent sales reported.

Insider Transaction Report

Form 4
Period: 2026-04-23
Scholar Rock Holding CorpSRRK
Burow Kristina
Director
Transactions
  • Exercise/Conversion

    Common Stock

    [F1]
    2026-04-23$26.78/sh+7,800$208,884→ 28,871 total
  • Exercise/Conversion

    Common Stock

    [F2]
    2026-04-23$4.75/sh+28,000$133,000→ 56,871 total
  • Exercise/Conversion

    Common Stock

    [F3]
    2026-04-23$9.11/sh+36,000$327,960→ 92,871 total
  • Exercise/Conversion

    Common Stock

    [F4]
    2026-04-23$8.36/sh+18,000$150,480→ 110,871 total
  • Exercise/Conversion

    Stock Option (Right to Buy)

    [F7]
    2026-04-23−7,800→ 0 total
    Exercise: $26.78Exp: 2031-05-27→ Common Stock (7,800 underlying)
  • Exercise/Conversion

    Stock Option (Right to Buy)

    [F8]
    2026-04-23−28,000→ 0 total
    Exercise: $4.75Exp: 2032-05-26→ Common Stock (28,000 underlying)
  • Exercise/Conversion

    Stock Option (Right to Buy)

    [F9]
    2026-04-23−36,000→ 0 total
    Exercise: $9.11Exp: 2033-06-21→ Common Stock (36,000 underlying)
  • Exercise/Conversion

    Stock Option (Right to Buy)

    [F10]
    2026-04-23−18,000→ 0 total
    Exercise: $8.36Exp: 2034-06-27→ Common Stock (18,000 underlying)
Holdings

  • Common Stock

    [F5][F6]
    (indirect: See footnote)
    2,345,711
Footnotes (10)
  • [F1]Consists of 21,239 shares of common stock and 7,632 RSUs.
  • [F10]This stock option vested on May 22, 2025. No shares remain unvested under this stock option.
  • [F2]Consists of 49,239 shares of common stock and 7,632 RSUs..
  • [F3]Consists of 85,239 shares of common stock and 7,632 RSUs.
  • [F4]Consists of 103,239 shares of common stock and 7,632 RSUs.
  • [F5]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.
  • [F6]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.
  • [F7]This stock option vested on May 26, 2022. No shares remain unvested under this stock option.
  • [F8]This stock option vested on May 26, 2023. No shares remain unvested under this stock option.
  • [F9]This stock option vested on June 21, 2024. No shares remain unvested under this stock option.
Signature
/s/ Junlin Ho, Attorney-in-Fact for Kristina Burow|2026-04-24

Documents

1 file
  • 4
    tm2612694-1_4seq1.xmlPrimary

    OWNERSHIP DOCUMENT