AXCELIS TECHNOLOGIES INC·4

Mar 3, 5:05 PM ET

Mahoney Robert John 4

4 · AXCELIS TECHNOLOGIES INC · Filed Mar 3, 2026

Research Summary

AI-generated summary of this filing

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Axcelis (ACLS) EVP Robert Mahoney Sells 573 Shares

What Happened
Robert John Mahoney, EVP Global Operations at Axcelis Technologies (ACLS), had 573 shares forfeited/withdrawn to cover tax withholding on the vesting of performance-based restricted stock units. The shares were valued at $86.58 each (closing price on March 2, 2026), for a total of $49,610. This was a tax-withholding disposition (code F), not an open-market sale.

Key Details

  • Transaction date: March 2, 2026; filing date: March 3, 2026 (next day filing; no late filing indicated).
  • Price used: $86.58 per share (closing price on March 2, 2026).
  • Shares forfeited/issued to company: 573 (to satisfy tax withholding), reported as a disposition.
  • Footnote highlights:
    • These shares relate to the vesting on Feb 28, 2026 of 2024 performance-based RSUs granted in May 2024; the Compensation Committee determined 150% of target were earned. Half of the earned shares vested Feb 28, 2025 and the remainder vested Feb 28, 2026. (F1)
    • 10,543 shares remaining after this vesting are issuable on other RSUs under the 2012 Equity Incentive Plan and remain subject to forfeiture. (F3)
  • Shares owned after the transaction: not specified in the provided filing; see note about 10,543 issuable RSUs above.

Context
This was a routine tax-withholding event tied to vested performance-based awards (a cashless/forfeiture to cover tax obligations), which is common and does not necessarily indicate insider sentiment. It differs from an open-market sale because shares were withheld by the company to satisfy taxes rather than being sold on the market by the executive.

Insider Transaction Report

Form 4
Period: 2026-03-02
Mahoney Robert John
EVP Global Operations
Transactions
  • Tax Payment

    Common Stock

    [F2][F1][F3]
    2026-03-02$86.58/sh573$49,61014,633 total
Footnotes (3)
  • [F1]This forfeiture of shares for tax withholding purposes relates to the vesting on February 28, 2026 of performance-based restricted stock units ("2024 PRSUs") granted to the executive in May 2024. Of the 2024 PRSUs granted, 150% were determined to be earned by the executive pursuant to a resolution of the Axcelis Technologies, Inc. Compensation Committee on February 13, 2025, with half of the earned shares vesting on February 28, 2025 and the remaining half of the earned shares vesting on February 28, 2026. The shares issued to the executive on the vesting were reduced by a number of shares having a value equal to the executive's tax withholding obligation with respect to the vested 2024 PRSUs.
  • [F2]Represents the closing price of the Company's common stock on March 2, 2026, the date of the tax withholding.
  • [F3]Of the shares held after the vesting of the remaining 2024 PRSUs, 10,543 were issuable on vesting of restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan and are subject to forfeiture.
Signature
/s/ Eileen J. Evans, Attorney-in-Fact|2026-03-03

Documents

1 file
  • 4
    form4-03032026_050312.xmlPrimary