Beam Therapeutics Inc. Insider Trading Update

Bethany J. Cavanagh, SVP, Finance and Treasurer at Beam Therapeutics Inc., reported a sale of 187 shares of common stock on October 1, 2026. The transaction, valued at $24.41 per share, was part of a non-discretionary sale to cover tax withholding obligations upon the vesting of restricted stock units. This sale was executed under a Rule 10b5-1 trading plan adopted on August 9, 2024. Following this transaction, Ms. Cavanagh holds 50,984 shares of Beam Therapeutics Inc. common stock.