Kevin Bitterman's Stock Sale in Disc Medicine, Inc.

On August 5, 2025, Kevin Bitterman, a director of Disc Medicine, Inc., sold 395 shares of common stock at a price of $60.95 per share, pursuant to a Rule 10b5-1 trading plan dated January 31, 2025. Following this transaction, Bitterman owns 625,082 shares directly and indirectly through various entities. The shares are held by Atlas Venture Opportunity Fund I, LP, Atlas Venture Opportunity Fund II, LP, and Atlas Venture Fund XII, L.P. Bitterman disclaims beneficial ownership of these shares except to the extent of his pecuniary interest. The filing highlights the nature of ownership and the indirect holdings through these entities.