Form 4 Filing by Rahul Khara

On June 18, 2026, Rahul Khara, Chief Legal Officer of Disc Medicine, Inc., executed a series of transactions involving the company's common stock. These transactions were conducted under a Rule 10b5-1 trading plan. Khara acquired 7,500 shares of common stock at a price of $14.69 per share. Concurrently, Khara disposed of a total of 7,500 shares of common stock. The disposal transactions included the sale of 5,400 shares at a weighted average price of $69.94, 1,600 shares at a weighted average price of $70.73, and 500 shares at a weighted average price of $71.62. These sales were executed in multiple transactions at varying prices within specified ranges. Additionally, Khara exercised a stock option to acquire 7,500 shares of common stock at an exercise price of $0.00, with the underlying shares valued at $14.69 each. Following these transactions, Khara holds 52,173 shares of common stock directly.