Form 4: Scholar Rock Director Sells Shares to Cover Tax Obligations

Kristina Burow, a Director at Scholar Rock Holding Corp, sold a total of 5,400 shares of common stock on May 29, 2025, to satisfy tax withholding obligations related to RSU vesting.

Summary

• Kristina Burow, a Director of Scholar Rock Holding Corp (SRRK), reported the sale of common stock on May 29, 2025.
• The sales were executed pursuant to a Rule 10b5-1 trading plan adopted on February 27, 2025.
• A total of 1,000 shares were sold at a weighted average price of $29.2419 per share, with prices ranging from $28.57 to $29.49.
• An additional 4,400 shares were sold at a weighted average price of $29.8338 per share, with prices ranging from $29.59 to $30.18.
• The purpose of these sales was to cover tax withholding obligations upon the vesting and settlement of Restricted Stock Units (RSUs).
• Following these transactions, Kristina Burow directly beneficially owns 21,071 shares, consisting of 13,439 shares of common stock and 7,632 RSUs.
• Additionally, 2,345,711 shares are indirectly held by ARCH Venture Fund VIII, L.P., with the reporting person disclaiming beneficial ownership except to the extent of her pecuniary interest.

Sentiment

Score: 5

Explanation: The transaction is a routine insider sale to cover tax obligations upon RSU vesting, executed under a pre-arranged 10b5-1 plan, which is generally considered neutral in terms of market sentiment and does not indicate a change in management's outlook on the company.

Industry Context

This Form 4 filing details a routine insider transaction for a biotechnology company. Sales of shares to cover tax withholding obligations upon the vesting of equity awards like RSUs are a common and expected practice across industries, including the biotech sector, and are typically executed under pre-arranged Rule 10b5-1 trading plans to avoid accusations of trading on material non-public information.

Related Party Transactions

• Kristina Burow is a managing director of ARCH Venture Partners VIII, L.P. (GPLP), which is the sole general partner of ARCH Venture Fund VIII, L.P. (ARCH VIII). ARCH VIII holds 2,345,711 shares of common stock. The reporting person disclaims beneficial ownership of these shares, except to the extent of her pecuniary interest, as she does not have voting or investment control over these shares.

Stakeholder Impact

• Shareholders: The sale represents a minor reduction in direct insider ownership, but it is for tax purposes and not indicative of a change in confidence or strategic direction. It is a routine part of equity compensation management.

Key Dates

Recommendation

Keywords

Scholar Rock Holding Corp, SRRK, Form 4, Insider Transaction, Stock Sale, Rule 10b5-1, Tax Withholding, RSU Vesting, Beneficial Ownership