Eileen J. Evans - 16 Dec 2025 Form 4 Insider Report for AXCELIS TECHNOLOGIES INC (ACLS)

Reporting relationship: EVP, General Counsel and Sec'y
Issuer ticker: ACLS
Reported as of: 16 Dec 2025
Net transaction value: -$118,949
SEC form: 4
Accepted by SEC: 18 Dec 2025, 17:05:05 UTC
Prior SEC filing: 15 May 2025
Next SEC filing: 19 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Eileen J. Evans

Key filing fact

Eileen J. Evans filed Form 4 for AXCELIS TECHNOLOGIES INC (ACLS) on 18 Dec 2025.

Key facts

This page summarizes Eileen J. Evans's Form 4 filing for AXCELIS TECHNOLOGIES INC (ACLS).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 18 Dec 2025, 17:05.

Change

Previous filing in this sequence was filed on 15 May 2025.
Current net transaction value: -$118,949.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001715912 Primary reporting owner

Evans Eileen

Relationship: EVP, General Counsel and Sec'y
Address: 108 CHERRY HILL DRIVE, BEVERLY
Signature: /s/ Eileen J. Evans
Signature date: 18 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ACLS transaction

Common Stock

Tax liability

Transaction value: $118,949
Shares: -1,378
Change %: -5.3%
Price: $86.32
Shares after: 24,406
Date: 16 Dec 2025
Ownership: Direct
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

This forfeiture of shares for tax withholding purposes relates to the vesting on December 16, 2025 of 2,850 service vesting restricted stock units granted to the executive in December 2024. 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.

Footnote F2

Represents the closing price of the common stock on the date of the tax withholding.

Footnote F3

Of the shares held after this vesting event on December 16, 2025, 22,934 were issuable on vesting of restricted stock units granted to the reporting person under the 2012 Equity Incentive Plan and are subject to forfeiture.