Every Form 4 that Axcelis Technologies Inc (ACLS) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow ACLS and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full ACLS filings page.
Axcelis Technologies director Jorge Titinger sold 1,000 shares of common stock in an open-market transaction at $80.00 per share on February 20, 2026. After this sale, he directly held 6,477 shares, including 3,586 shares issuable upon vesting of restricted stock units granted under the 2012 Equity Incentive Plan that remain subject to forfeiture.
Axcelis Technologies EVP Global Operations Robert John Mahoney reported a new equity award. On January 15, 2026, he acquired 1,734 shares of common stock at a price of $0, reflecting restricted stock units granted under the company’s 2012 Equity Incentive Plan. These units are scheduled to vest in four equal 25% installments on January 15 of 2027, 2028, 2029, and 2030, assuming his employment continues.
Following this grant, Mahoney beneficially owned 15,206 shares of Axcelis common stock. Of this amount, 11,611 shares were issuable upon vesting of previously granted restricted stock units and remain subject to forfeiture under the plan’s terms.
Axcelis Technologies director reports sale of company stock
A director of Axcelis Technologies, Inc. reported selling 2,000 shares of common stock on December 17, 2025 at a price of $86.05 per share. After this transaction, the director beneficially owned 7,477 shares of Axcelis common stock. Of these remaining shares, 3,586 shares are issuable upon the vesting of restricted stock units granted under the company’s 2012 Equity Incentive Plan and are subject to forfeiture if vesting conditions are not met.
Axcelis Technologies Inc. executive reports tax-related share withholding. An executive officer of Axcelis Technologies Inc. reported a Form 4 transaction dated December 16, 2025. In connection with the vesting of 2,850 service-vesting restricted stock units granted in December 2024, 1,378 shares of common stock were withheld to cover tax obligations. The withholding price was based on the $86.32 closing price of Axcelis common stock on the withholding date. After this event, the reporting person beneficially owned 24,406 shares of common stock, including 22,934 shares issuable upon vesting of restricted stock units under the company’s 2012 Equity Incentive Plan that remain subject to forfeiture.
Axcelis Technologies (ACLS) reported an insider transaction by its EVP and CFO related to restricted stock units. On October 16, 2025, the officer had 713 shares withheld to cover taxes upon RSU vesting at a price of $83.62.
After this transaction, the officer directly beneficially owned 38,944 shares. Of these, 34,657 shares were issuable upon future vesting of RSUs under the 2012 Equity Incentive Plan and remain subject to forfeiture.