InsiderTrades

Form 4 for ACLS AXCELIS TECHNOLOGIES INC

Accepted 2026-01-16 00:00:00 ET · period of report 2026-01-15 · accession 0002101601-26-000002 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
2026-01-16 2026-01-15 ACLS Mahoney Robert John EVP Gbl Ops A - Grant $0.00 +1,734 15.2K +13% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-01-15 A A 1,734 $0.00 15,206 D — — (F1) These shares are issuable on vesting of restricted stock units granted under the Company's 2012 Equity Incentive Plan on January 15, 2026. Assuming continuation of employment, these restricted stock units will vest as to 25% of the shares granted on each of January 15, 2027, January 15, 2028, January 15, 2029, and January 15, 2030. (F2) Of the shares held after this grant on January 15, 2026, 11,611 were issuable on vesting of restricted stock units granted to the executive under the 2012 Equity Incentive Plan and are subject to forfeiture.