Welcome to our dedicated page for AXCELIS TECHNOLOGIES SEC filings (Ticker: ACLS), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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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.
Axcelis Technologies President and CEO Russell Low reported equity compensation and related tax events in company stock. On May 15, 2026 he received two grants of 19,466 restricted stock units each under the 2012 Equity Incentive Plan, including a performance-based award tied to relative total shareholder return through December 31, 2028. The filing also shows 6,891 shares of common stock were withheld at $155.18 per share to satisfy tax obligations on previously granted restricted stock units that vested on the same date.
ACLS submitted a Rule 144 notice reporting 3,500 shares of Common Stock tied to restricted stock vesting under a registered plan. The filing identifies Morgan Stanley Smith Barney LLC as the broker and lists 05/15/2026 as the vesting/sale date and 05/19/2026 on the filing header. The securities are listed for trading on NASDAQ.
Morgan Stanley Smith Barney LLC Executive Financial Services filed a Form 144 notice relating to the proposed sale of 1,789 shares of Common stock of ACLS. The securities are described as restricted stock vesting under a registered plan with a vesting date of 05/16/2023.
The filing lists 05/19/2026 and identifies the market as NASDAQ. The filer is shown as the issuer in connection with the restricted stock vesting.
ACLS submitted a Form 144 notice covering 3,225 shares of Common stock. The filing states the shares relate to restricted stock vesting under a registered plan with the vesting date 05/15/2026.
The transaction is listed as involving the issuer and the shares are associated with broker information on file; the filing lists a dollar amount of $456,697.15 alongside the share count.
Titinger Jorge reported acquisition or exercise transactions in this Form 4 filing.
Axcelis Technologies director Jorge Titinger received an equity award in the form of restricted stock units. On May 15, 2026, he was granted 1,440 shares of common stock at no purchase price under the company’s 2012 Equity Incentive Plan. These restricted stock units are scheduled to vest on May 15, 2027, assuming he completes his current Board term, and are subject to forfeiture until they vest. Following this award, Titinger beneficially holds 5,917 shares of Axcelis common stock, including the 1,440 unvested restricted stock units.