4processed

Form 4 — Insider Transaction

AXCELIS TECHNOLOGIES INC(ACLS)

Filing Date

May 18, 2026

Accepted

May 18, 2026

Accession No.

0001940017-26-000008

CIK

0001113232

Insider Transactions

InsiderTitleTypeSharesPriceValueOwned AfterSecurityDate
Redinbo GregEVP MARKETING AND APPLICATIONSOther111$146.2435.1KCommon StockMay 18, 2026
Redinbo GregEVP MARKETING AND APPLICATIONSOther79$146.2435.0KCommon StockMay 18, 2026