SEC Filing Summary for Christopher Tatnall Transaction

Christopher Tatnall, EVP Global Customer Operations at Axcelis Technologies Inc., reported a transaction on September 15, 2026. The transaction involved the forfeiture of 136 shares of common stock for tax withholding purposes, related to the vesting of restricted stock units granted in September 2023. The value of the forfeited shares was based on the closing price of $105.04 per share on the transaction date. Following this forfeiture, Tatnall holds 27,491 shares, with 20,590 of these shares subject to forfeiture related to his participation in the 2012 Equity Incentive Plan. The reporting owner is Christopher Tatnall, and the filing is Form 4.