Tatnall Christopher (CIK 1990732) reported 15 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-21). Recent activity: Sell ACLS (1,166 shares), Buy ACLS (3,504 shares), Buy ACLS (3,504 shares), Sell ACLS (744 shares), Sell ACLS (345 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-21 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 1,166 | $174,608 |
| 2026-05-19 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Buy | 3,504 | $0 |
| 2026-05-19 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Buy | 3,504 | $0 |
| 2026-05-19 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 744 | $115,454 |
| 2026-05-19 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 345 | $53,537 |
| 2026-05-19 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 170 | $26,381 |
| 2026-04-21 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 907 | $118,835 |
| 2026-03-03 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 1,121 | $97,056 |
| 2025-09-17 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 137 | $11,960 |
| 2025-05-19 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Buy | 6,148 | $0 |
| 2025-05-19 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Buy | 6,148 | $0 |
| 2025-05-19 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 345 | $21,621 |
| 2025-05-19 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 170 | $10,654 |
| 2025-04-22 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 907 | $41,024 |
| 2025-03-04 | AXCELIS TECHNOLOGIES INC (ACLS) | EVP Global Customer Operations | Sell | 1,146 | $62,789 |
Source: SEC Form 4 filings · as of 2026-05-21