Gerald M Blumenstock

ACLS

Gerald M Blumenstock serves as EVP, Research, Dev. & Eng. at Axcelis Technologies, Inc. (ACLS). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

4 trades

$389.8K

Net Position

Net Seller

$389.8K

Companies Traded

ACLS

Active Period

Jun 2024 – Dec 2025

4 total trades

Most Recent

Sell ACLS

Dec 11, 2025 · $271.4K

Gerald M Blumenstock's Insider Trading at Axcelis Technologies, Inc. (ACLS)

Buys

0 · $0.00

Sells

4 · $389.8K

Total Shares Bought

Total Shares Sold

4,596

ACLS Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value
Dec 11, 2025	Sell	3,034	$89.46	$271.4K
Jun 16, 2025	Sell	506	$68.96	$34.9K
Feb 28, 2025	Sell	748	$54.79	$41.0K
Jun 17, 2024	Sell	308	$138.02	$42.5K

Related Insiders

Russell Low

PRESIDENT AND CEO

ACLSSell · Mar 26, 2026

Jorge Titinger

Director

ACLSSell · Feb 20, 2026

Eileen Evans

EVP, General Counsel and Sec'y

ACLSSell · Dec 16, 2025

COOGAN JAMES GORDON

EVP AND CFO

ACLSSell · Oct 16, 2025

Greg Redinbo

EVP MARKETING AND APPLICATIONS

ACLSSell · Sep 15, 2025

Christopher Tatnall

EVP Global Customer Operations

ACLSSell · Sep 15, 2025

KURTZWEIL JOHN T

Director

ACLSSell · May 20, 2025

Explore More Insider Trading Data

ACLS Insider Trading Activity

View all insider trades at Axcelis Technologies, Inc.

Technology Sector Insider Trades

See insider activity across technology stocks

Latest Insider Buys

Most recent insider purchases across all stocks

CEO Stock Purchases

Track CEO buying activity