Peng Katie 4

What Happened

• Katie Peng, a director of Scholar Rock Holding Corp (SRRK), sold a total of 5,446 shares in open-market transactions on July 1, 2026, for aggregate proceeds of about $293,405. The sales break down as: 2,988 shares at a weighted avg $53.56 ($160,037); 2,437 shares at a weighted avg $54.25 ($132,214); and 21 shares at a weighted avg $54.96 (~$1,154). These disposals were reported as sales (S) and were made to cover tax obligations tied to RSU vesting under a pre-established Rule 10b5-1 trading plan.

Key Details

• Transaction date: July 1, 2026 (filed on July 6, 2026).
• Prices/ranges: 2,988 shares @ $53.56 (weighted; tx prices ranged $52.970–$53.965); 2,437 shares @ $54.25 (weighted; $53.967–$54.815); 21 shares @ $54.96 (weighted; $54.860–$55.016).
• Holdings after each sale:
  • After first sale: 23,958 common shares + 12,801 RSUs = 36,759 total (footnote).
  • After second sale: 21,521 common shares + 12,801 RSUs = 34,322 total (footnote).
  • After third sale: 21,500 common shares + 12,801 RSUs = 34,301 total (footnote).
• Footnotes: Sales were effected pursuant to a Rule 10b5-1 plan adopted March 20, 2026 to cover tax withholding on RSU vesting; reported prices are weighted averages with per-sale price ranges (details available to the SEC on request).
• Timeliness: Transaction dated 7/1/2026; Form 4 filed 7/6/2026 (outside the typical two-business-day window), so the filing appears late.

Context

• These sales were executed under a Rule 10b5-1 plan to satisfy tax obligations related to RSUs — a common, routine reason insiders sell shares and not necessarily an indicator of a change in view on the company.
• For retail investors, purchases typically carry more direct insight into insider confidence; routine tax-related sales are less informative about management’s near-term outlook.