Qatanani Mo 4

What Happened
Qatanani Mo, Chief Scientific Officer of Scholar Rock Holding Corp (SRRK), sold a total of 14,898 shares in open-market transactions on January 22, 2026, generating approximately $695,938 in proceeds. The sales were reported as two disposals: 2,119 shares at an average price of $45.87 for $97,189, and 12,779 shares at an average price of $46.85 for $598,749. These were sales (not purchases), which are often routine divestitures rather than a bullish signal.

Key Details

• Transaction dates: January 22, 2026 (reported on Form 4 filed January 23, 2026). Filing appears timely (within the standard 2‑business‑day window).
• Sales: 2,119 shares @ weighted avg $45.87 = $97,189 (F2 notes prices ranged $45.43–$46.42); 12,779 shares @ weighted avg $46.85 = $598,749 (F4 notes prices ranged $46.43–$47.31). Total proceeds ≈ $695,938.
• Plan: F1 states the trades were effected under a Rule 10b5-1 trading plan adopted March 31, 2025 (prearranged plan).
• Holdings/footnotes: The filing’s footnotes reference 85,660 RSUs and 12,779 common shares (see F3/F5). Consult the full Form 4 for the exact post-transaction ownership breakdown and mapping of footnotes.
• Transaction type code: S = Sale.

Context
A Rule 10b5-1 plan means these sales were executed under a pre-established program, which can limit the extent to which they reflect the insider’s current view of the company. For exact post-transaction ownership and the schedule of individual sale prices, review the full Form 4 (accession 0001980298-26-000007), which the filing notes can supply per-price breakdowns to the SEC staff on request.