Disc Medicine COO Jonathan Yen-Wen Yu Executes Stock Option Exercise and Sale

Jonathan Yen-Wen Yu, Chief Operating Officer of Disc Medicine, Inc. (IRON), executed a stock option exercise and subsequent sale of shares on June 22, 2026. The transactions were conducted pursuant to a Rule 10b5-1 trading plan adopted on March 17, 2026. Yu exercised options to acquire 9,700 shares of common stock at $13.50 per share, then immediately sold the same 9,700 shares at a weighted average price of $72.6593 per share, with the actual sales occurring at prices ranging from $72.50 to $72.68. Following these transactions, Yu's direct holdings decreased from 64,024 to 54,324 shares of common stock, while his remaining stock option holdings decreased to 24,147 options. The option exercise involved options that vest in 48 equal monthly installments following December 29, 2022, subject to continued service.