Updated Jul 16, 2026
Mahoney Robert John has filed 4 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $543K.

Robert John Mahoney serves as Executive Vice President, Global Operations for Axcelis Technologies Inc. as of the 2026-01-16 SEC filing, where he is responsible for overseeing Axcelis’ global manufacturing, supply chain, and operational execution. The filing indicates no securities purchases or sales by him at that time, confirming his ongoing executive role within the company.
| Role | Insider |
|---|---|
| Notability | 40/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-03 | ACLS | AXCELIS TECHNOLOGIES INC | S — Open-market sale | 1.2K | $155.24 | $179K |
| 2026-05-20 | ACLS | AXCELIS TECHNOLOGIES INC | F — Tax withholding / forfeiture | 130 | $146.24 | $19K |
| 2026-05-20 | ACLS | AXCELIS TECHNOLOGIES INC | F — Tax withholding / forfeiture | 182 | $146.24 | $27K |
| 2026-05-19 | ACLS | AXCELIS TECHNOLOGIES INC | F — Tax withholding / forfeiture | 61 | $155.18 | $9K |
| 2026-05-19 | ACLS | AXCELIS TECHNOLOGIES INC | F — Tax withholding / forfeiture | 170 | $155.18 | $26K |
| 2026-05-19 | ACLS | AXCELIS TECHNOLOGIES INC | F — Tax withholding / forfeiture | 173 | $155.18 | $27K |
| 2026-05-19 | ACLS | AXCELIS TECHNOLOGIES INC | F — Tax withholding / forfeiture | 372 | $155.18 | $58K |
| 2026-05-19 | ACLS | AXCELIS TECHNOLOGIES INC | A — Grant or award | 1.9K | $0.00 | |
| 2026-05-19 | ACLS | AXCELIS TECHNOLOGIES INC | A — Grant or award | 1.9K | $0.00 | |
| 2026-05-13 | ACLS | AXCELIS TECHNOLOGIES INC | S — Open-market sale | 2.3K | $161.00 | $364K |
| 2026-03-03 | ACLS | AXCELIS TECHNOLOGIES INC | F — Tax withholding / forfeiture | 573 | $86.58 | $50K |
| 2026-01-16 | ACLS | AXCELIS TECHNOLOGIES INC | A — Grant or award | 1.7K | $0.00 |
Robert John Mahoney serves as Executive Vice President, Global Operations for Axcelis Technologies Inc. as of the 2026-01-16 SEC filing, where he is responsible for overseeing Axcelis’ global manufacturing, supply chain, and operational execution. The filing indicates no securities purchases or sales by him at that time, confirming his ongoing executive role within the company.…
4 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 2 open-market sales ($543K) across all tracked 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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