Axcelis Technologies filings document the formal disclosures of a semiconductor equipment company focused on ion implantation systems and lifecycle support. Its Form 8-K reports cover operating results, material events, financial-condition updates, executive officer changes and annual-meeting voting results.
Proxy materials describe board elections, stockholder voting mechanics, independent auditor ratification, executive compensation and share ownership by directors, officers and significant holders. The filing record also includes disclosures related to material agreements, governance matters and capital-structure subjects tied to the company’s common stock and public-company reporting obligations.
Axcelis Technologies executive Greg Redinbo reported routine tax-withholding transactions, not open-market trades. On tax-withholding related to the May 16, 2026 vesting of restricted stock units granted in May 2022, 190 shares of common stock were forfeited at a price of $146.24 per share to cover his tax liability. Footnotes note that tens of thousands of additional shares are issuable upon future vesting of restricted stock units under the 2012 Equity Incentive Plan and remain subject to forfeiture.
Axcelis Technologies President and CEO Russell Low reported a routine tax-related share disposition. On May 18, 2026, 711 shares of common stock were withheld at $146.24 per share to satisfy tax obligations from the vesting of restricted stock units granted in May 2022.
After this event, Low directly held 154,900 shares. Footnotes state that 106,691 of the shares held after the May 16, 2026 vesting date are issuable upon future vesting of restricted stock units under the 2012 Equity Incentive Plan and remain subject to forfeiture.
ACLS affiliate files a Form 144 to sell common stock. The filing lists 1,166 shares of Common stock associated with restricted stock vesting under a registered plan on 05/15/2026. The Form 144 notice was recorded on 05/20/2026, and the sale is described as tied to restricted stock vesting under a registered plan.
Axcelis Technologies VP Corporate Controller Todd Sutton reported routine equity compensation and related tax withholding transactions in common stock. On May 15, 2026, he received a grant of 1,168 restricted stock units under the 2012 Equity Incentive Plan, which will vest in three equal annual installments starting in 2027. On the same date, a total of 441 shares of common stock were forfeited at $155.18 per share to satisfy tax withholding obligations tied to previously granted restricted stock units. Following these events, Sutton directly held 8,544 shares of Axcelis common stock.
Axcelis Technologies senior vice president and interim CFO David Ryzhik received a 3,115-share award of common stock on May 15, 2026, at no cash cost, in the form of restricted stock units scheduled to vest in three equal annual installments on May 15, 2027, 2028, and 2029. On the same date, 226 shares were withheld and forfeited at $155.18 per share to cover tax obligations from a prior restricted stock unit vesting. After these equity events, he held 10,031 shares of common stock directly, with footnotes indicating that many additional shares are issuable upon future vesting and subject to forfeiture, and the transactions were not reported as conducted under a Rule 10b5-1 trading plan.
Axcelis Technologies EVP Global Operations Robert John Mahoney reported routine equity compensation activity and related tax withholding on May 15, 2026. He received two grants of 1,947 shares of common stock each as restricted stock units under the company’s 2012 Equity Incentive Plan.
The service-vesting RSUs are scheduled to vest in three equal annual installments starting May 15, 2027, while performance-based RSUs may earn from zero to 200% of granted units based on relative total shareholder return for January 1, 2026 to December 31, 2028, vesting after performance is measured in 2029. To cover tax obligations from vesting of prior RSU grants made in 2023, 2024, and 2025, a total of 776 shares were forfeited at a reference price of $155.18 per share, which represents tax-withholding dispositions rather than open-market sales. Mahoney continues to hold common stock, including shares issuable upon future RSU vesting that remain subject to forfeiture.
AXCELIS TECHNOLOGIES INC EVP Gerald M. Blumenstock reported compensation-related stock activity, not open-market trading. On May 15, 2026, he received two grants of 2,725 shares each of common stock as restricted stock units under the company’s 2012 Equity Incentive Plan.
One RSU grant vests in three equal annual installments in 2027, 2028, and 2029, subject to continued employment. The other is a performance-based RSU award tied to relative total shareholder return from January 1, 2026 to December 31, 2028, with 0–200% of the granted units potentially earned and vesting in 2029.
Also on May 15, 2026, a total of 1,089 shares of common stock (345 shares and 744 shares) were forfeited to cover tax withholding obligations upon the vesting of earlier RSU awards granted in 2024 and 2025. These dispositions were for tax payments at a price of $155.18 per share, the closing price on the tax-withholding date, and do not represent open-market sales.
Axcelis Technologies EVP Christopher Tatnall reported routine equity compensation and related tax withholding transactions. On May 15, 2026, he received two awards of 3,504 shares each of restricted stock units under the 2012 Equity Incentive Plan. One grant is scheduled to vest in three equal parts on May 15, 2027, May 15, 2028, and May 15, 2029, assuming continued employment.
The other grant is performance-based, with shares earned between 0% and 200% of the granted units based on relative total shareholder return for the period from January 1, 2026 to December 31, 2028, vesting after performance is measured in 2029. The filing also shows dispositions of 1,259 shares at $155.18 per share to cover tax withholding on previously granted restricted stock units, which were not open-market sales.
Axcelis Technologies EVP Greg Redinbo reported new equity awards and routine tax withholding transactions. On May 15, 2026, he received two grants of 3,115 shares of common stock each as restricted stock units under the 2012 Equity Incentive Plan. One grant vests in three annual installments in 2027, 2028, and 2029, while the other can earn from 0%–200% of the granted units based on relative total shareholder return for January 1, 2026–December 31, 2028, with earned shares vesting in 2029. The filing also records forfeitures totaling 839 shares at $155.18 per share to satisfy tax withholding on previously granted RSUs that vested in 2023–2025. After these events, Redinbo continues to hold more than 32,000 shares of Axcelis common stock, including a significant number of unvested RSUs subject to forfeiture.
Axcelis Technologies EVP and General Counsel Eileen Evans reported compensation-related equity activity. On May 15, 2026, she received two awards of restricted stock units covering a total of 7,786 shares of common stock under the 2012 Equity Incentive Plan, including a performance-based grant that can pay out from zero to 200% of granted units based on relative total shareholder return for 2026–2028. On the same date, 867 shares were withheld at $155.18 per share to cover tax obligations on previously granted restricted stock units that vested, a non-market tax-withholding disposition rather than an open-market sale.