Form 4: Scholar Rock Director Sells Shares Under 10b5-1 Plan

Scholar Rock Holding Corp. director Kristina Burow reported the sale of common stock valued at approximately $113,000 under a pre-arranged trading plan.

Summary

• Kristina Burow, a director at Scholar Rock Holding Corp. (SRRK), has reported transactions involving the sale of common stock.
• These sales were executed under a Rule 10b-5-1 trading plan established on March 31, 2026.
• The purpose of the plan was to cover tax obligations arising from the vesting and settlement of restricted stock units (RSUs).
• A total of 2,105 shares were sold at a weighted average price of $53.494, with individual transaction prices ranging from $53.050 to $54.030.
• An additional 948 shares were sold at a weighted average price of $54.2816, with prices ranging from $54.040 to $54.795.
• Following these transactions, Burow beneficially owns 115,605 shares (including 6,839 RSUs) and 114,657 shares (including 6,839 RSUs) in separate holdings.
• A significant holding of 2,345,711 shares is held indirectly through ARCH Venture Fund VIII, L.P., with Burow disclaiming beneficial ownership beyond her pecuniary interest.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing. While it involves a director selling shares, the transaction is conducted under a pre-arranged 10b5-1 plan specifically to cover tax obligations, mitigating concerns about insider trading.

Positives

• The sales were conducted under a Rule 10b5-1 plan, indicating pre-planned and potentially non-insider trading related activity.
• The sales were to cover tax obligations, a common and often necessary reason for stock sales by executives and directors.
• Burow retains a substantial indirect beneficial ownership of 2,345,711 shares through ARCH Venture Fund VIII, L.P.

Negatives

• Director Burow sold a portion of her holdings in Scholar Rock Holding Corp.
• The total value of the reported sales is approximately $113,000.

Risks

• The sale of shares by a director, even under a 10b5-1 plan, can sometimes be perceived negatively by the market, potentially impacting share price.
• The indirect beneficial ownership details are complex, involving multiple entities (ARCH VIII, GPLP, GPLLC) and managing directors, which could lead to confusion or scrutiny.

Future Outlook

The filing does not contain forward-looking statements or guidance regarding future company performance. It solely reports on past transactions.

Management Comments

• The sales were 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).
• Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.
• 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.

Industry Context

StockSavvy.ai notes that Form 4 filings are routine disclosures for insider transactions. The use of a Rule 10b5-1 plan by a director like Kristina Burow is a standard practice to manage stock sales in a way that avoids accusations of insider trading, particularly when sales are for tax obligations related to equity compensation.

Stakeholder Impact

• Shareholders: May view the sale as a minor negative, but the use of a 10b5-1 plan for tax obligations is generally understood and accepted.
• Employees: The sale is unlikely to have a direct impact on employees, though it is a routine disclosure.
• Creditors: No direct impact expected.
• Suppliers: No direct impact expected.
• Customers: No direct impact expected.

Next Steps

• The company may receive requests from the SEC staff for full information regarding the number of shares sold at each separate price, as indicated in the footnotes.

Key Dates

Keywords

Scholar Rock Holding Corp, SRRK, Kristina Burow, Form 4, SEC Filing, Insider Trading, Rule 10b5-1, Stock Sale, Restricted Stock Units, RSUs, Beneficial Ownership, Director Transaction