Qatanani Mo 4

What Happened
Mo Qatanani, Chief Scientific Officer of Scholar Rock (SRRK), sold 7,989 shares of common stock in an open‑market/broker‑facilitated sale on February 17, 2026 at $46.53 per share, generating proceeds of $371,714. The sale was a sell‑to‑cover to satisfy tax withholding on recently vested restricted stock units (RSUs), not a discretionary market trade.

Key Details

• Transaction date and price: 2026-02-17, 7,989 shares at $46.53 each (total $371,714).
• Filing date: Form 4 filed 2026-02-19 (timely; within the usual two‑business‑day Form 4 window).
• Shares owned after transaction: 8,484 shares of common stock plus 98,445 unvested RSUs (per filing footnote).
• Footnotes: The sale was required to cover tax withholding on RSUs that vested Feb 15, 2026. The vested RSUs were from awards granted Feb 13, 2023 and Mar 10, 2025 and vest annually over four years, subject to continued service. The filing notes the sale was mandated by the issuer’s sell‑to‑cover procedure and not a discretionary sale by the reporting person.

Context
This was a tax‑withholding sell‑to‑cover related to RSU vesting (routine administrative transaction). Such mandated sales are common and do not necessarily indicate the insider’s view of the company’s prospects.