Trade Summary

4 days ago, Blumenstock Gerald M, serving as EVP, Research, Dev., Eng. at Axcelis Technologies Inc (ACLS), sold 1,161 shares at $152.70 per share, for a total transaction value of $177,285.00. Following this transaction, Blumenstock Gerald M now holds 20,493 shares of ACLS.

This sale represents a 5.00% decrease in Blumenstock Gerald M's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Thursday, May 21, 2026 and publicly disclosed via SEC Form 4 filing on Friday, May 22, 2026 at 5:05 PM ET, 1 day after the trade was made.

Axcelis Technologies Inc operates in the TECHNOLOGY sector, specifically within the SEMICONDUCTOR EQUIPMENT & MATERIALS industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.