Axcelis Technologies VP Corporate Controller Sells 2,000 Shares at $159.99

This Form 4 filing reports that Todd Sutton, Vice President Corporate Controller of Axcelis Technologies Inc (ACLS), sold 2,000 shares of common stock on May 27, 2026, at a price of $159.99 per share. Following the transaction, Sutton owns 6,360 shares, of which 4,582 shares are restricted stock units granted under the company's 2012 Equity Incentive Plan that are subject to forfeiture until vesting. The sale represents a disposition of company stock by an executive officer, with the transaction coded as an "S" (Sale) under SEC regulations. The filing was signed by attorney-in-fact Eileen J. Evans on May 28, 2026, and reports the transaction within the required timeframe.