Summary
Updated Aug 30, 2026
John T. Kurtzweil files SEC Form 4 reports at AXCELIS TECHNOLOGIES INC (ACLS). 4 SEC Form 4 filings on record going back to 2025, most recently on 20 May 2026. Most recent open-market trade: sold $486K of ACLS on 20 May 2026. Lifetime open-market sales: $590K.
Recent Transactions
4Every recent SEC Form 4 transaction John T. Kurtzweil has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies John T. Kurtzweil files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Russell Low - $1.57M of ACLS open-market activity in the last 12 months
- Todd Sutton - $742K of ACLS open-market activity in the last 12 months
- Robert John Mahoney - $543K of ACLS open-market activity in the last 12 months
- Greg Redinbo - $464K of ACLS open-market activity in the last 12 months
- Gregory B. Graves - $457K of ACLS open-market activity in the last 12 months
- Jorge Titinger - $408K of ACLS open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is John T. Kurtzweil?
John T. Kurtzweil is a corporate insider of AXCELIS TECHNOLOGIES INC (ACLS). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did John T. Kurtzweil last file a Form 4?
The most recent primary Form 4 on record is dated 20 May 2026, one of 4 filings going back to 2025.
Has John T. Kurtzweil been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($590K) across all tracked filings.
Where can I see all of John T. Kurtzweil's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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