ACLS insider buying and SEC filings, explained
Axcelis Technologies Inc. · CIK 1113232
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- Nasdaq
- Industry (SIC)
- Special Industry Machinery, NEC
- State of incorporation
- DE
- Fiscal year end
- Dec 31
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$4.8M
Planned sales (10b5-1)
$1.6M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Jun 3, 2026 | Sale | Necip Sayiner (Director) sold 1,586 shares at about $157.44 ($250K). Holdings down 18% to 7,112 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 4, 2026 |
| Jun 2, 2026 | Sale | Robert John Mahoney (EVP Global Operations) sold 1,155 shares at $155.24 ($179K). Holdings down 7% to 14,410 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 3, 2026 |
| May 27, 2026 | Sale | Todd Sutton (VP Corporate Controller) sold 2,000 shares at $159.99 ($320K). Holdings down 24% to 6,360 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 28, 2026 |
| May 22, 2026 | Sale | Dennis Thomas St (Director) sold 900 shares at $155.37 ($140K). Holdings down 5% to 17,695 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 26, 2026 |
| May 22, 2026 | Sale | Eileen Evans (EVP, General Counsel and Sec'y) sold 926 shares at $155.51 ($144K). Holdings down 3% to 31,295 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 22, 2026 |
| May 21, 2026 | Sale | Gerald M Blumenstock (EVP, Research, Dev. & Eng.) sold 1,161 shares at $152.70 ($177K). Holdings down 5% to 20,493 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 22, 2026 |
| May 20, 2026 | Sale | Christopher Tatnall (EVP Global Customer Operations) sold 1,166 shares at $149.75 ($175K). Holdings down 4% to 27,627 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 21, 2026 |
| May 19, 2026 | Sale | Jeanne Quirk (Director) sold 1,789 shares at $140.22 ($251K). Holdings down 14% to 11,400 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 20, 2026 |
| May 19, 2026 | Sale | Gregory B. Graves (Director) sold 3,225 shares at about $141.61 ($457K). Holdings down 37% to 5,473 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 20, 2026 |
| May 19, 2026 | Sale | John T. Kurtzweil (Director) sold 3,500 shares at about $138.79 ($486K). Holdings down 10% to 32,990 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 20, 2026 |
| May 14, 2026 | Sale | Todd Sutton (VP Corporate Controller) sold 2,574 shares at about $163.89 ($422K). Holdings down 25% to 7,817 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 15, 2026 |
| May 14, 2026 | Sale | Gerald M Blumenstock (EVP, Research, Dev. & Eng.) sold 1,015 shares at $162.32 ($165K). Holdings down 6% to 17,293 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 15, 2026 |
| May 13, 2026 | Sale | Greg Redinbo (EVP Marketing and Applications) sold 2,883 shares at $160.85 ($464K). Holdings down 9% to 29,823 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 14, 2026 |
| May 13, 2026 | Sale | Jorge Titinger (Director) sold 2,000 shares at $164.14 ($328K). Holdings down 31% to 4,477 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 14, 2026 |
| May 12, 2026 | Sale | Robert John Mahoney (EVP Global Operations) sold 2,258 shares at $161.00 ($364K). Holdings down 15% to 12,759 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 13, 2026 |
| May 6, 2026 | Planned (10b5-1) | Russell Low (CEO and Director) sold 7,468 shares at $156.75 ($1.2M), marked as a 10b5-1 plan trade. Holdings down 6% to 123,570 shares. | SEC filing Filed May 7, 2026 |
| May 1, 2026 | Planned (10b5-1) | Russell Low (CEO and Director) sold 1,244 shares at $138.86 ($173K), marked as a 10b5-1 plan trade. Holdings down 1% to 131,038 shares. | SEC filing Filed May 4, 2026 |
| Apr 1, 2026 | Planned (10b5-1) | Russell Low (CEO and Director) sold 1,244 shares at $94.06 ($117K), marked as a 10b5-1 plan trade. Holdings down 1% to 132,282 shares. | SEC filing Filed Apr 2, 2026 |
| Mar 24, 2026 | Planned (10b5-1) | Russell Low (CEO and Director) sold 1,244 shares at $90.00 ($112K), marked as a 10b5-1 plan trade. Holdings down 1% to 133,526 shares. | SEC filing Filed Mar 26, 2026 |
| Feb 20, 2026 | Sale | Jorge Titinger (Director) sold 1,000 shares at $80.00 ($80K). Holdings down 13% to 6,477 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 23, 2026 |
| Dec 17, 2025 | Sale | Jorge Titinger (Director) sold 2,000 shares at $86.05 ($172K). Holdings down 21% to 7,477 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 18, 2025 |
| Dec 11, 2025 | Sale | Gerald M Blumenstock (EVP, Research, Dev. & Eng.) sold 3,034 shares at about $89.46 ($271K). Holdings down 14% to 18,661 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 12, 2025 |
33 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
| Filed | Items | Tag | Source |
|---|---|---|---|
| Nov 2, 2026, 8:11 AM ET 8-K | Reg FD disclosure (Item 7.01) Other event (Item 8.01) | SEC filing | |
| Oct 27, 2026, 8:07 AM ET 8-K | Executive or director change (Item 5.02) Reg FD disclosure (Item 7.01) | SEC filing |
Red flags are objective triggers only: the item or form filed, never an opinion.
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