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.
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 INC (ACLS) reported an insider equity tax-withholding transaction by EVP and Chief Strategy Officer Greg Redinbo. On September 15, 2026, 208 shares of common stock were withheld to pay tax liabilities arising from the vesting of restricted stock units granted in September 2022, using the $105.04 closing price that day. After this vesting event, Redinbo held 34,816 shares in total, including 19,782 shares issuable upon future vesting of restricted stock units under the 2012 Equity Incentive Plan that remain subject to forfeiture. No Rule 10b5-1 trading plan is reported.
Axcelis Technologies Inc. (ACLS) reported that executive vice president of Global Customer Operations Christopher Tatnall had 136 shares of common stock withheld on September 15, 2026, to satisfy tax liabilities arising from the vesting of restricted stock units granted in September 2023. The shares were valued at the $105.04 closing price on that date. After this vesting event, Tatnall holds 27,491 shares directly, including 20,590 shares issuable upon future vesting of restricted stock units that remain subject to forfeiture.
Axcelis Technologies reported second-quarter 2026 total revenue of $215.2 million, up 10.6% from the prior year, driven mainly by strong growth in its Aftermarket business. Systems revenue was $132.4 million while Aftermarket revenue reached $82.8 million, with most sales to Asia Pacific customers. Despite higher revenue, gross margin fell to 42.4% from 44.9%, and net income declined to $23,291 thousand, with diluted EPS of $0.75 versus $0.98 a year earlier.
For the first half of 2026, revenue was $414.1 million, but net income fell to $32,505 thousand as product margins softened and services gross margin remained negative. Operating expenses increased 21–22% year over year, with general and administrative costs rising on professional fees related to the pending Veeco merger. Operating cash flow was $36,512 thousand, down from $79,522 thousand in the prior-year period.
Axcelis ended June 30, 2026 with cash and cash equivalents of $154,996 thousand, short-term investments of $247,220 thousand, long-term investments of $174,829 thousand and restricted cash of $10,633 thousand, supporting total assets of $1,386,838 thousand and stockholders’ equity of $1,065,821 thousand. Contract liabilities (deferred revenue) increased to $118,542 thousand, and two customers each contributed 17.8% of first-half revenue, underscoring customer concentration. The all-stock merger with Veeco, at an exchange ratio of 0.3575 Axcelis shares per Veeco share, remains subject to final Chinese regulatory approval and is expected to close in the second half of 2026.
FMR LLC filed an amended Schedule 13G reporting beneficial ownership of AXCELIS TECHNOLOGIES INC common stock. FMR LLC and Abigail P. Johnson report beneficial ownership of 4,122,402.08 shares of common stock, representing 13.4% of the outstanding class.
FMR LLC reports sole voting power over 4,115,558.38 shares and sole dispositive power over 4,122,402.08 shares, with no shared voting or dispositive power. Abigail P. Johnson reports sole dispositive power over the same 4,122,402.08 shares and no voting power, reflecting her control position over FMR LLC.
The filing notes that one or more other persons have rights to receive dividends or sale proceeds from these shares, but no other person has an interest exceeding five percent of Axcelis Technologies’ outstanding common stock.
Axcelis Technologies reported Q2 2026 revenue of $215.2 million, exceeding its internal forecasts on stronger system shipments and higher CS&I volume. GAAP gross margin was 42.4% and operating margin 9.4%. Net income was $23.3 million, with GAAP diluted EPS of $0.75, both lower than a year earlier.
Non-GAAP gross margin was 42.7% and non-GAAP operating margin 14.7%. Non-GAAP diluted EPS was $1.06, and Adjusted EBITDA was $35,972 (in thousands). Management highlighted robust demand in Memory and positive momentum in Power, with improving trends in General Mature markets.
For Q3 2026, Axcelis expects revenue of approximately $230 million, GAAP diluted EPS of about $0.76, and non-GAAP diluted EPS of about $1.11. As of June 30, 2026, cash and cash equivalents were $154,996 (in thousands) and short-term investments $247,220 (in thousands), supporting total assets of $1,386,838 (in thousands). The company is working to satisfy remaining conditions to complete its pending merger with Veeco in the second half of 2026.
Axcelis Technologies SVP Interim CFO David Ryzhik reported two tax-withholding dispositions of common stock on July 15, 2026. In total, 221 shares were forfeited at $145.01 per share to satisfy taxes due on the vesting of restricted stock units granted in July 2024. He continues to hold Axcelis shares and unvested restricted stock units that remain subject to forfeiture.
Axcelis Technologies Inc. common stock is reported as being beneficially owned in a minority stake by an institutional holder. Sandi King reported beneficial ownership of 928,660 shares of Axcelis Technologies Inc. common stock, representing 3.02% of the outstanding class.
The reporting person has sole power to vote 852,169 shares and sole power to dispose of 928,660 shares, with no shared voting or dispositive power. The position is characterized as ownership of 5 percent or less of the class of common stock.
Axcelis Technologies SVP and Interim CFO David Ryzhik reported a routine tax-withholding share disposition tied to equity compensation. On June 16, 2026, 76 shares of common stock were withheld at a price of $176.845 per share to cover taxes on vesting restricted stock units granted in June 2025.
After this vesting event, Ryzhik directly held 9,955 shares, including 8,439 shares issuable upon future vesting of restricted stock units under the 2012 Equity Incentive Plan that remain subject to forfeiture. The transaction reflects tax withholding rather than an open-market sale.
AXCELIS TECHNOLOGIES INC executive Gerald M. Blumenstock had 506 common shares withheld for taxes tied to vesting restricted stock units. On June 15, 2026, shares from RSUs granted in June 2023 vested, and part of the issued shares was forfeited to satisfy his tax withholding obligation.
After this tax-withholding disposition, he directly holds 19,987 common shares. Footnotes state that 19,447 additional shares are issuable upon future vesting of restricted stock units under the 2012 Equity Incentive Plan and remain subject to forfeiture.
Axcelis Technologies director Necip Sayiner sold common stock in an open-market transaction. On June 3, 2026, he sold 1,586 shares at a weighted-average price of $157.4422 per share, with individual trade prices ranging from $157.41 to $157.71. Following this sale, he directly holds 7,112 shares of Axcelis common stock. Of these holdings, 2,110 shares are issuable upon vesting of restricted stock units granted under the 2012 Equity Incentive Plan and remain subject to forfeiture.