Axcelis Technologies Inc. (ACLS)
Axcelis Technologies Inc. (ACLS) Insider Trading
Directors, officers and holders of more than 10% of ACLS report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 134 transactions on file: 0 with code P, 11 with code S and 39 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 15, 2026 | Redinbo Greg | EVP and Chief Strategy Officer | F Tax Payment | 208 | $105.04 | $21,848 |
| Sep 15, 2026 | Tatnall Christopher | EVP Global Customer Operations | F Tax Payment | 136 | $105.04 | $14,285 |
| Jul 15, 2026 | Ryzhik David | SVP Interim CFO | F Tax Payment | 94 | $145.01 | $13,631 |
| Jul 15, 2026 | Ryzhik David | SVP Interim CFO | F Tax Payment | 127 | $145.01 | $18,416 |
| Jun 16, 2026 | Ryzhik David | SVP Interim CFO | F Tax Payment | 76 | $176.84 | $13,440 |
| Jun 15, 2026 | Blumenstock Gerald M | EVP, Research, Dev. & Eng. | F Tax Payment | 506 | $191.60 | $96,950 |
| Jun 3, 2026 | Sayiner Necip | Director | S Sale | 1,586 | $157.44 | $249,703 |
| Jun 2, 2026 | Mahoney Robert John | EVP Global Operations | S Sale | 1,155 | $155.24 | $179,302 |
| May 27, 2026 | Sutton Todd | VP Corporate Controller | S Sale | 2,000 | $159.99 | $319,980 |
| May 22, 2026 | St Dennis Thomas | Director | S Sale | 900 | $155.37 | $139,833 |
| May 22, 2026 | Evans Eileen | EVP, General Counsel and Sec'y | S Sale | 926 | $155.51 | $143,998 |
| May 21, 2026 | Blumenstock Gerald M | EVP, Research, Dev. & Eng. | S Sale | 1,161 | $152.70 | $177,285 |
| May 20, 2026 | Tatnall Christopher | EVP Global Customer Operations | S Sale | 1,166 | $149.75 | $174,609 |
| May 19, 2026 | KURTZWEIL JOHN T | Director | S Sale | 3,500 | $138.79 | $485,771 |
| May 19, 2026 | GRAVES GREGORY B | Director | S Sale | 600 | $142.51 | $85,509 |
| May 19, 2026 | Quirk Jeanne | Director | S Sale | 1,789 | $140.22 | $250,854 |
| May 19, 2026 | GRAVES GREGORY B | Director | S Sale | 2,625 | $141.41 | $371,188 |
| May 18, 2026 | Redinbo Greg | EVP and Chief Strategy Officer | F Tax Payment | 79 | $146.24 | $11,553 |
| May 18, 2026 | Redinbo Greg | EVP and Chief Strategy Officer | F Tax Payment | 111 | $146.24 | $16,233 |
| May 18, 2026 | Mahoney Robert John | EVP Global Operations | F Tax Payment | 130 | $146.24 | $19,011 |
| May 18, 2026 | Sutton Todd | VP Corporate Controller | F Tax Payment | 184 | $146.24 | $26,908 |
| May 18, 2026 | Mahoney Robert John | EVP Global Operations | F Tax Payment | 182 | $146.24 | $26,616 |
| May 18, 2026 | Low Russell | PRESIDENT AND CEO | F Tax Payment | 711 | $146.24 | $103,977 |
| May 15, 2026 | Titinger Jorge | Director | A Award | 1,440 | Not measured | Not measured |
| May 15, 2026 | Ryzhik David | SVP Interim CFO | F Tax Payment | 226 | $155.18 | $35,071 |
| May 15, 2026 | Mahoney Robert John | EVP Global Operations | A Award | 1,947 | Not measured | Not measured |
| May 15, 2026 | Redinbo Greg | EVP and Chief Strategy Officer | F Tax Payment | 177 | $155.18 | $27,467 |
| May 15, 2026 | GRAVES GREGORY B | Director | A Award | 1,440 | Not measured | Not measured |
| May 15, 2026 | Sutton Todd | VP Corporate Controller | A Award | 1,168 | Not measured | Not measured |
| May 15, 2026 | Sutton Todd | VP Corporate Controller | F Tax Payment | 226 | $155.18 | $35,071 |
| May 15, 2026 | Tatnall Christopher | EVP Global Customer Operations | F Tax Payment | 170 | $155.18 | $26,381 |
| May 15, 2026 | Tatnall Christopher | EVP Global Customer Operations | F Tax Payment | 744 | $155.18 | $115,454 |
| May 15, 2026 | Redinbo Greg | EVP and Chief Strategy Officer | F Tax Payment | 210 | $155.18 | $32,588 |
| May 15, 2026 | Redinbo Greg | EVP and Chief Strategy Officer | F Tax Payment | 452 | $155.18 | $70,141 |
| May 15, 2026 | Mahoney Robert John | EVP Global Operations | F Tax Payment | 372 | $155.18 | $57,727 |
| May 15, 2026 | Redinbo Greg | EVP and Chief Strategy Officer | A Award | 3,115 | Not measured | Not measured |
| May 15, 2026 | Low Russell | PRESIDENT AND CEO | F Tax Payment | 1,722 | $155.18 | $267,220 |
| May 15, 2026 | Redinbo Greg | EVP and Chief Strategy Officer | A Award | 3,115 | Not measured | Not measured |
| May 15, 2026 | Low Russell | PRESIDENT AND CEO | F Tax Payment | 3,716 | $155.18 | $576,649 |
| May 15, 2026 | Low Russell | PRESIDENT AND CEO | A Award | 19,466 | Not measured | Not measured |
| May 15, 2026 | Low Russell | PRESIDENT AND CEO | A Award | 19,466 | Not measured | Not measured |
| May 15, 2026 | Blumenstock Gerald M | EVP, Research, Dev. & Eng. | F Tax Payment | 345 | $155.18 | $53,537 |
| May 15, 2026 | Chiu Tzu Yin | Director | A Award | 1,440 | Not measured | Not measured |
| May 15, 2026 | Low Russell | PRESIDENT AND CEO | F Tax Payment | 1,453 | $155.18 | $225,477 |
| May 15, 2026 | Tatnall Christopher | EVP Global Customer Operations | A Award | 3,504 | Not measured | Not measured |
| May 15, 2026 | Tatnall Christopher | EVP Global Customer Operations | A Award | 3,504 | Not measured | Not measured |
| May 15, 2026 | Evans Eileen | EVP, General Counsel and Sec'y | F Tax Payment | 867 | $155.18 | $134,541 |
| May 15, 2026 | Tatnall Christopher | EVP Global Customer Operations | F Tax Payment | 345 | $155.18 | $53,537 |
| May 15, 2026 | Blumenstock Gerald M | EVP, Research, Dev. & Eng. | F Tax Payment | 744 | $155.18 | $115,454 |
| May 15, 2026 | Evans Eileen | EVP, General Counsel and Sec'y | A Award | 3,893 | Not measured | Not measured |
The full Form 4 history is on the ACLS company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.