// company-profile
Axcelis Technologies Inc
ACLS// activity-summary
Recent insider activity is bearish. Over the last 30 days, insiders net sold $859K across 5 transactions.
// 90-day insight
Over the last 90 days, Axcelis Technologies Inc insiders bought $0 (19 transactions) and sold $4.6M (31 transactions).
- Most active insider: Mahoney Robert John with 7 transactions totaling $309K.
- Largest single sale: $577K by Low Russell on May 15, 2026.
Activity skews bearish — sales outpace buys.
Institutional Ownership
Top 13F-HR holders of Axcelis Technologies Inc as of 2026-03-31
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 16, 2026 | Ryzhik David | ACLS | Tax Withholding | 76 | $176.84 | $13K |
| Jun 15, 2026 | Blumenstock Gerald M | ACLS | Tax Withholding | 506 | $191.60 | $97K |
| Jun 3, 2026 | Sayiner Necip | ACLS | Sale | 1,586 | $157.44 | $250K |
| Jun 2, 2026 | Mahoney Robert John | ACLS | Sale | 1,155 | $155.24 | $179K |
| May 27, 2026 | Sutton Todd | ACLS | Sale | 2,000 | $159.99 | $320K |
45 more transactions hidden
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