AXCELIS TECHNOLOGIES INC - Form 4 Filing

Robert John Mahoney, EVP Global Operations at AXCELIS TECHNOLOGIES INC, reported a sale of 1155 shares of common stock on June 2, 2026, at a price of $155.24 per share. This transaction resulted in a post-transaction share ownership of 14,410 shares. The filing indicates that 12,578 of the remaining shares are subject to forfeiture upon vesting of restricted stock units granted under the 2012 Equity Incentive Plan.