Axcelis Technologies (NASDAQ: ACLS) insider transactions
In the twelve months to 10 November 2026, executives and directors of Axcelis Technologies reported 23 open-market sales of 45,372 shares ($6.4m) and 0 open-market purchases, by 13 people, according to the Form 4 filings they submitted to the SEC.
Latest transactions
| Date | Insider | Role | Transaction | Shares | Price | Held after | Filing |
|---|---|---|---|---|---|---|---|
| 15 September 2026 | Redinbo Greg | EVP and Chief Strategy Officer | Shares withheld for tax | −208 | $105.04 | 34,816 | Form 4 |
| 15 September 2026 | Tatnall Christopher | EVP Global Customer Operations | Shares withheld for tax | −136 | $105.04 | 27,491 | Form 4 |
| 15 July 2026 | Ryzhik David | SVP Interim CFO | Shares withheld for tax | −127 | $145.01 | 9,884 | Form 4 |
| 15 July 2026 | Ryzhik David | SVP Interim CFO | Shares withheld for tax | −94 | $145.01 | 9,790 | Form 4 |
| 16 June 2026 | Ryzhik David | SVP Interim CFO | Shares withheld for tax | −76 | $176.85 | 9,955 | Form 4 |
| 15 June 2026 | Blumenstock Gerald M | EVP, Research, Dev. & Eng. | Shares withheld for tax | −506 | $191.60 | 19,987 | Form 4 |
| 3 June 2026 | Sayiner Necip | Director | Open-market sale | −1,586 | $157.44 | 7,112 | Form 4 |
| 2 June 2026 | Mahoney Robert John | EVP Global Operations | Open-market sale | −1,155 | $155.24 | 14,410 | Form 4 |
| 27 May 2026 | Sutton Todd | VP Corporate Controller | Open-market sale | −2,000 | $159.99 | 6,360 | Form 4 |
| 22 May 2026 | St Dennis Thomas | Director | Open-market sale | −900 | $155.37 | 17,695 | Form 4 |
| 22 May 2026 | Evans Eileen | EVP, General Counsel and Sec'y | Open-market sale | −926 | $155.51 | 31,295 | Form 4 |
| 21 May 2026 | Blumenstock Gerald M | EVP, Research, Dev. & Eng. | Open-market sale | −1,161 | $152.70 | 20,493 | Form 4 |
| 20 May 2026 | Tatnall Christopher | EVP Global Customer Operations | Open-market sale | −1,166 | $149.75 | 27,627 | Form 4 |
| 19 May 2026 | Kurtzweil John T | Director | Open-market sale | −3,500 | $138.79 | 32,990 | Form 4 |
| 19 May 2026 | Graves Gregory B | Director | Open-market sale | −2,625 | $141.41 | 6,073 | Form 4 |
| 19 May 2026 | Graves Gregory B | Director | Open-market sale | −600 | $142.51 | 5,473 | Form 4 |
| 19 May 2026 | Quirk Jeanne | Director | Open-market sale | −1,789 | $140.22 | 11,400 | Form 4 |
| 18 May 2026 | Low Russell | President and CEO | Shares withheld for tax | −711 | $146.24 | 154,900 | Form 4 |
| 18 May 2026 | Redinbo Greg | EVP Marketing and Applications | Shares withheld for tax | −111 | $146.24 | 35,103 | Form 4 |
| 18 May 2026 | Redinbo Greg | EVP Marketing and Applications | Shares withheld for tax | −79 | $146.24 | 35,024 | Form 4 |
Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.
How to read the table
Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.
Where each row comes from
From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Axcelis Technologies page; the method, in data sources.
Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.