Axcelis Technologies's three largest insider shareholders as of August 04, 2026 are Russell Low (President And Ceo, 132.28K shares), Greg Redinbo (Evp Marketing And Applications, 31.94K shares), William J Bintz (Evp, Product Development, 31.17K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Russell Low | President And Ceo | 132,282 | 0 | 132,282 | 34.9% | 02 Apr, 2026 |
| 2 | Greg Redinbo | Evp Marketing And Applications | 31,938 | 0 | 31,938 | 8.4% | 03 Mar, 2026 |
| 3 | William J Bintz | Evp, Product Development | 31,173 | 0 | 31,173 | 8.2% | 23 Nov, 2022 |
| 4 | Lynnette C Fallon | Executive Vp, Hr/Legal | 27,323 | 0 | 27,323 | 7.2% | 07 Jan, 2025 |
| 5 | Christopher Tatnall | Evp Global Customer Operations | 23,044 | 0 | 23,044 | 6.1% | 21 Apr, 2026 |
| 6 | Kevin J Brewer | Evp Chief Financial Officer | 19,597 | 0 | 19,597 | 5.2% | 02 Jan, 2024 |
| 7 | Gerald M Blumenstock | Evp, Research, Dev. Eng. | 17,540 | 0 | 17,540 | 4.6% | 03 Mar, 2026 |
| 8 | Dennis Thomas St | Director | 17,155 | 0 | 17,155 | 4.5% | 15 May, 2025 |
| 9 | Douglas A. Lawson | Evp, Corporate Mktg Strategy | 15,808 | 0 | 15,808 | 4.2% | 24 Jun, 2024 |
| 10 | Robert John Mahoney | Evp Global Operations | 14,633 | 0 | 14,633 | 3.9% | 03 Mar, 2026 |
| 11 | Jeanne Quirk | Director | 11,749 | 0 | 11,749 | 3.1% | 15 May, 2025 |
| 12 | Tzu Yin Chiu | Director | 10,403 | 0 | 10,403 | 2.7% | 15 May, 2025 |
| 13 | Dipti Vachani | Director | 9,063 | 0 | 9,063 | 2.4% | 16 May, 2024 |
| 14 | Necip Sayiner | Director | 7,258 | 0 | 7,258 | 1.9% | 15 May, 2025 |
| 15 | Jorge Titinger | Director | 6,477 | 0 | 6,477 | 1.7% | 23 Feb, 2026 |
| 16 | Joseph P Keithley | Director | 3,157 | 0 | 3,157 | 0.8% | 14 Dec, 2023 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 20 Apr, 2026 | Christopher Tatnall | Evp Global Customer Operations | Disposed F | 907 | $131.02 | $118.84K | 23,044 | Direct |
| 01 Apr, 2026 | Russell Low | President And Ceo | Disposed S | 1,244 | $94.06 | $117.01K | 132,282 | Direct |
| 01 Apr, 2026 | Russell Low | President And Ceo | Disposed S | 1,244 | $94.06 | $117.01K | 132,282 | Direct |
| 01 Apr, 2026 | Russell Low | President And Ceo | Disposed S | 1,244 | $94.06 | $117.01K | 132,282 | Direct |
| 01 Apr, 2026 | Russell Low | President And Ceo | Disposed S | 1,244 | $94.06 | $117.01K | 132,282 | Direct |
| 24 Mar, 2026 | Russell Low | President And Ceo | Disposed S | 1,244 | $90.00 | $111.96K | 133,526 | Direct |
| 24 Mar, 2026 | Russell Low | President And Ceo | Disposed S | 1,244 | $90.00 | $111.96K | 133,526 | Direct |
| 24 Mar, 2026 | Russell Low | President And Ceo | Disposed S | 1,244 | $90.00 | $111.96K | 133,526 | Direct |
| 24 Mar, 2026 | Russell Low | President And Ceo | Disposed S | 1,244 | $90.00 | $111.96K | 133,526 | Direct |
| 02 Mar, 2026 | Greg Redinbo | Evp Marketing And Applications | Disposed F | 723 | $86.58 | $62.60K | 31,938 | Direct |
| 02 Mar, 2026 | Russell Low | President And Ceo | Disposed F | 5,227 | $86.58 | $452.55K | 130,928 | Direct |
| 02 Mar, 2026 | Greg Redinbo | Evp Marketing And Applications | Disposed F | 723 | $86.58 | $62.60K | 31,938 | Direct |
| 02 Mar, 2026 | Gerald M Blumenstock | Evp, Research, Dev. Eng. | Disposed F | 1,121 | $86.58 | $97.06K | 17,540 | Direct |
| 02 Mar, 2026 | Russell Low | President And Ceo | Disposed F | 5,227 | $86.58 | $452.55K | 130,928 | Direct |
| 02 Mar, 2026 | Gerald M Blumenstock | Evp, Research, Dev. Eng. | Disposed F | 1,121 | $86.58 | $97.06K | 17,540 | Direct |
| 02 Mar, 2026 | Robert John Mahoney | Evp Global Operations | Disposed F | 573 | $86.58 | $49.61K | 14,633 | Direct |
| 02 Mar, 2026 | Greg Redinbo | Evp Marketing And Applications | Disposed F | 723 | $86.58 | $62.60K | 31,938 | Direct |
| 02 Mar, 2026 | Gerald M Blumenstock | Evp, Research, Dev. Eng. | Disposed F | 1,121 | $86.58 | $97.06K | 17,540 | Direct |
| 02 Mar, 2026 | Robert John Mahoney | Evp Global Operations | Disposed F | 573 | $86.58 | $49.61K | 14,633 | Direct |
| 02 Mar, 2026 | Robert John Mahoney | Evp Global Operations | Disposed F | 573 | $86.58 | $49.61K | 14,633 | Direct |