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Axcelis Technologies, Inc. (ACLS) has had 66 insider transactions recently, with net insider activity of +$32K (net buying). The most active insider is Tatnall Christopher (Officer: evp global customer operations).
Total Transactions
66
21 buys /45 sells
Shares Acquired
83,663
Transactions: 21•Avg: 3,983.95
Shares Disposed
51,631
Transactions: 45•Avg: 1,147.36
Net Activity
+32,032
Net Selling•Ratio: 46.67%
Q2 2026(Current) | 83,663 | 51,631 | +32,032 | 46.67% |
Q1 2026 | 1,734 | 12,809 | -11,075 | 12.50% |
Q4 2025 | 0 | 7,125 | -7,125 | 0.00% |
Q3 2025 | 0 | 345 | -345 | 0.00% |
Q2 2025 | 162,400 | 10,673 | +151,727 | 126.67% |
This table shows insider trading activity by quarter. A ratio > 100% indicates insiders acquired more shares than they disposed of during the period, which is generally considered a bullish signal.
• Most recent data for Q2 2026
Acquired vs Disposed Shares
Net Accumulation: 32,032 shares•Acquired/Disposed Ratio: 46.67%
Net Activity | |||||
|---|---|---|---|---|---|
TC Tatnall Christopher | Officer: evp global customer operations | 13 | 19,304 | 5,105 | +14,199 |
LR Low Russell | Director, officer: president and ceo | 13 | 38,932 | 25,688 | +13,244 |
RG Redinbo Greg | Officer: evp marketing and applications | 16 | 18,526 | 6,153 | +12,373 |
CJG COOGAN JAMES GORDON | Officer: evp and cfo | 4 | 12,295 | 3,087 | +9,208 |
EE Evans Eileen | Officer: evp, general counsel and sec'y | 5 | 7,786 | 3,171 | +4,615 |
This table shows the trading activity of the most active company insiders. Positive net activity (buying more than selling) is often considered a bullish signal.
2026-06-03 | Director | Sale | 1,586 | $157.44 | $249,703.33 | 7,112 | |
2026-05-27 | Officer: vp corporate controller | Sale | 2,000 | $159.99 | $319,980 | 6,360 | |
2026-05-22 | Director | Sale | 900 | $155.37 | $139,833 | 17,695 | |
2026-05-22 | Officer: evp, general counsel and sec'y | Sale | 926 | $155.51 | $143,997.91 | 31,295 | |
2026-05-21 | Officer: evp, research, dev. & eng. | Sale | 1,161 | $152.7 | $177,284.7 | 20,493 |
This table displays recent Form 4 filings showing transactions by company insiders. SEC rules require insiders to report their transactions within two business days.
SN Sayiner Necip | Director | Jun 4, 2026 | |
ST Sutton Todd | Officer: vp corporate controller | May 28, 2026 | |
SDT St Dennis Thomas | Director | May 26, 2026 | |
EE Evans Eileen | Officer: evp, general counsel and sec'y | May 22, 2026 | |
BGM Blumenstock Gerald M | Officer: evp, research, dev. & eng. | May 22, 2026 |
Net change in shares shown on right