4processed

Form 4 — Insider Transaction

AXCELIS TECHNOLOGIES INC(ACLS)

Filing Date

May 15, 2026

Accepted

May 15, 2026

Accession No.

0002123863-26-000004

CIK

0001113232

Insider Transactions

InsiderTitleTypeSharesPriceValueOwned AfterSecurityDate
Ryzhik DavidSVP Interim CFOOther3.1K$010.3KCommon StockMay 15, 2026
Ryzhik DavidSVP Interim CFOOther226$155.1810.0KCommon StockMay 15, 2026