Scholar Rock Files 8-K to Add $200M At-The-Market Share Offering

What Happened

• Scholar Rock Holding Corp filed an 8-K on August 6, 2026 announcing a new prospectus supplement under its shelf registration (Form S-3ASR, File No. 333-282530) to permit the sale, from time to time, of up to $200,000,000 of common stock through an at-the-market (ATM) offering via Jefferies LLC as sales agent.
• The new prospectus supplement replaces and supersedes the company’s prior prospectus supplement dated November 14, 2025, and the offering under that prior supplement has been terminated. Goodwin Procter LLP issued a legal opinion regarding the shares (included as Exhibit 5.1).

Key Details

• Aggregate offering size authorized by the new prospectus supplement: $200,000,000.
• ATM sales agent: Jefferies LLC; offering made at the company’s sole discretion, from time to time.
• Registration: Shares registered under the company’s shelf registration statement on Form S-3ASR (filed Oct 7, 2024).
• To date the company has raised approximately $257.7 million in net proceeds from shares sold under the ATM Program.

Why It Matters

• This filing gives Scholar Rock flexible access to capital: the company can sell shares into the market as needed rather than raising a fixed private round. That can support operations, R&D, or other corporate needs without negotiating separate financings.
• For investors, ATM programs can cause dilution when shares are sold. The new $200M capacity (in addition to ~ $257.7M already raised) signals continued use of equity markets for funding—monitor future prospectus supplements and SEC filings for actual issuance amounts and impact on share count.
• The replacement of the prior prospectus supplement and inclusion of counsel’s legal opinion are procedural steps required to refresh and continue the ATM program under the company’s shelf registration.