Jorge Titinger - 15 May 2026 Form 4 Insider Report for AXCELIS TECHNOLOGIES INC (ACLS)

Reporting relationship: Director
Issuer ticker: ACLS
Reported as of: 15 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 18 May 2026, 17:05:16 UTC
Prior SEC filing: 18 May 2026
Next SEC filing: 19 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Eileen J. Evans, Attorney-in-Fact

Key filing fact

Jorge Titinger filed Form 4 for AXCELIS TECHNOLOGIES INC (ACLS) on 18 May 2026.

Key facts

This page summarizes Jorge Titinger's Form 4 filing for AXCELIS TECHNOLOGIES INC (ACLS).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 18 May 2026, 17:05.

Change

Previous filing in this sequence was filed on 18 May 2026.
Current net transaction value: $0.

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 0001385162 Primary reporting owner

Titinger Jorge

Relationship: Director
Address: C/O AXCELIS TECHNOLOGIES, INC., 108 CHERRY HILL DRIVE, BEVERLY
Signature: /s/ Eileen J. Evans, Attorney-in-Fact
Signature date: 18 May 2026

Reported non-derivative transactions

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

ACLS transaction

Common Stock

Award

Transaction value
Shares: +1,440
Change %: +32%
Price: $0.000000^*
Shares after: 5,917
Date: 15 May 2026
Ownership: Direct
Footnotes: F1, F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on May 15, 2026. Assuming completion of the director's current term of service on the Board of Directors, these restricted stock units will vest on May 15, 2027.

Footnote F2

Of the shares held as of May 15, 2026, 1,440 were issuable on vesting of restricted stock units granted to the director under the 2012 Equity Incentive Plan and are subject to forfeiture.