AXCELIS TECHNOLOGIES INC·4

May 20, 5:05 PM ET

Redinbo Greg 4

4 · AXCELIS TECHNOLOGIES INC · Filed May 20, 2026

Research Summary

AI-generated summary of this filing

Updated

Axcelis (ACLS) EVP Greg Redinbo Forfeits 190 Shares for Taxes

What Happened
Greg Redinbo, EVP Marketing and Applications at Axcelis (ACLS), had restricted stock units vest on May 16, 2026 and surrendered shares to cover the tax withholding obligation. The filing shows two forfeitures on May 18, 2026: 111 shares at $146.24 ($16,233) and 79 shares at $146.24 ($11,553), totaling about $27,786. This was a tax-withholding (forfeiture) transaction, not an open-market sale.

Key Details

  • Transaction date(s): May 18, 2026 (relates to RSU vesting on May 16, 2026)
  • Price used: $146.24 per share (closing price on withholding date)
  • Shares forfeited to cover taxes: 111 and 79 (total 190 shares) — proceeds/value approx. $27,786
  • Footnotes: Withholding relates to RSUs granted May 2022; shares issued on vesting were reduced to satisfy tax withholding. The filing also notes remaining RSU amounts (20,756 and 20,488 shares) that are issuable on vesting and subject to forfeiture.
  • Filing timeliness: Form filed May 20, 2026 (appears timely under Form 4 rules).

Context
This was a routine tax-withholding (F code) tied to RSU vesting — essentially a cashless/forfeiture method where the company retains shares to cover taxes. Such withholdings are administrative and do not necessarily indicate the insider is buying or selling for investment reasons.

Insider Transaction Report

Form 4
Period: 2026-05-18
Redinbo Greg
EVP MARKETING AND APPLICATIONS
Transactions
  • Tax Payment

    Common Stock

    [F2][F1][F3]
    2026-05-18$146.24/sh111$16,23335,103 total
  • Tax Payment

    Common Stock

    [F2][F1][F4]
    2026-05-18$146.24/sh79$11,55335,024 total
Footnotes (4)
  • [F1]This forfeiture of shares for tax withholding purposes relates to the vesting on May 16, 2026 of service vesting restricted stock units granted to the executive in May 2022. 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 restricted stock units.
  • [F2]Represents the closing price of the common stock on the date of the tax withholding.
  • [F3]Of the shares held after this vesting event on May 16, 2026, 20,756 were issuable on vesting of restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan and are subject to forfeiture.
  • [F4]Of the shares held after this vesting event on May 16, 2026, 20,488 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|2026-05-20

Documents

1 file
  • 4
    form4-05202026_050505.xmlPrimary