Blumenstock Gerald M - Insider Non-Derivative Transactions at AXCELIS TECHNOLOGIES INC (ACLS) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Dec 11, 2025, Blumenstock Gerald M's relationship to AXCELIS TECHNOLOGIES INC (ACLS) is Officer (EVP, Research, Dev. & Eng.), and currently has 18,661 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other ACLS insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

Blumenstock Gerald M - Insider Non-Derivative Transactions of ACLS Common Stock

Blumenstock Gerald M - Insider Non-Derivative Transactions at ACLS

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Dec 12, 2025	Sell -- (Common Stock)	3034	89.46	18661
Jun 17, 2025	F -- (Common Stock)	506	68.96	21695
May 16, 2025	Acquisition -- (Common Stock)	6148	0	16398
May 16, 2025	F -- (Common Stock)	345	62.67	22201
May 16, 2025	Acquisition -- (Common Stock)	6148	0	22546
Mar 1, 2025	F -- (Common Stock)	748	54.79	10250
Jun 18, 2024	F -- (Common Stock)	308	138.02	9572
May 16, 2024	Acquisition -- (Common Stock)	2849	0	7031
May 16, 2024	Acquisition -- (Common Stock)	2849	0	9880
Jun 16, 2023	Acquisition -- (Common Stock)	4182	0	4182