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Axcelis Technologies stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+20.9% to $99.24
Axcelis Technologies (ACLS) stock rose 21% over the last 252 sessions, to $99.24. On the way it reported 4 quarters, its insiders filed 16 open-market trades, and the company filed 2 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Nov 5, 2026 | Earnings | Earnings: beat the EPS estimate by 13.9% | −2.4% (+2.2% vs SPY) | — | — |
| Oct 27, 2026 | 8-K | Directors and officers: departures, appointments, pay | +4.1% (+3.5% vs SPY) | −13.7% (−11.9% vs SPY) | — |
| Aug 6, 2026 | Earnings | Earnings: beat the EPS estimate by 18.6% | 0.0% (+0.1% vs SPY) | +3.9% (+3.6% vs SPY) | −21.4% (−21.8% vs SPY) |
| Jun 3, 2026 | Insider sale | Sayiner Necip sold $250K | +0.3% (+1.0% vs SPY) | +3.6% (+6.6% vs SPY) | −9.4% (−7.7% vs SPY) |
| Jun 2, 2026 | Insider sale | Mahoney Robert John sold $179K | +5.4% (+5.3% vs SPY) | +2.9% (+5.4% vs SPY) | +17.0% (+18.5% vs SPY) |
| May 27, 2026 | Insider sale | Sutton Todd sold $320K | −3.9% (−3.9% vs SPY) | −3.4% (−4.6% vs SPY) | +9.6% (+11.5% vs SPY) |
| May 22, 2026 | Insider sale | St Dennis Thomas sold $140K | +2.9% (+2.5% vs SPY) | −1.4% (−3.2% vs SPY) | +11.5% (+12.5% vs SPY) |
| May 22, 2026 | Insider sale | Evans Eileen sold $144K | +2.9% (+2.5% vs SPY) | −1.4% (−3.2% vs SPY) | +11.5% (+12.5% vs SPY) |
| May 21, 2026 | Insider sale | Blumenstock Gerald M sold $177K | +2.0% (+1.8% vs SPY) | +3.9% (+2.1% vs SPY) | +20.7% (+20.0% vs SPY) |
| May 20, 2026 | Insider sale | Tatnall Christopher sold $175K | +4.3% (+3.3% vs SPY) | +9.7% (+7.5% vs SPY) | +26.9% (+24.9% vs SPY) |
| May 19, 2026 | Insider sale | Quirk Jeanne sold $251K | −2.1% (−1.4% vs SPY) | +11.6% (+10.0% vs SPY) | +18.2% (+17.9% vs SPY) |
| May 19, 2026 | Insider sale | Kurtzweil John T sold $486K | −2.1% (−1.4% vs SPY) | +11.6% (+10.0% vs SPY) | +18.2% (+17.9% vs SPY) |
| May 19, 2026 | Insider sale | Graves Gregory B sold $457K | −2.1% (−1.4% vs SPY) | +11.6% (+10.0% vs SPY) | +18.2% (+17.9% vs SPY) |
| May 14, 2026 | Insider sale | Sutton Todd sold $422K | −0.3% (−1.1% vs SPY) | −8.1% (−7.9% vs SPY) | +10.5% (+10.5% vs SPY) |
| May 14, 2026 | Insider sale | Blumenstock Gerald M sold $165K | −0.3% (−1.1% vs SPY) | −8.1% (−7.9% vs SPY) | +10.5% (+10.5% vs SPY) |
| May 13, 2026 | Insider sale | Titinger Jorge sold $328K | +0.3% (−0.2% vs SPY) | −12.1% (−11.5% vs SPY) | +7.1% (+7.1% vs SPY) |
| May 13, 2026 | Insider sale | Redinbo Greg sold $464K | +0.3% (−0.2% vs SPY) | −12.1% (−11.5% vs SPY) | +7.1% (+7.1% vs SPY) |
| May 12, 2026 | Insider sale | Mahoney Robert John sold $364K | −2.1% (−2.0% vs SPY) | −12.1% (−12.0% vs SPY) | −4.8% (−2.9% vs SPY) |
| May 7, 2026 | Earnings | Earnings: beat the EPS estimate by 1.4% | −7.5% (−7.2% vs SPY) | −5.3% (−6.5% vs SPY) | −15.0% (−15.5% vs SPY) |
| Mar 12, 2026 | 8-K | Directors and officers: departures, appointments, pay | −2.4% (−1.8% vs SPY) | +2.3% (+3.2% vs SPY) | +26.2% (+23.0% vs SPY) |
| Feb 20, 2026 | Insider sale | Titinger Jorge sold $80K | −0.6% (−1.3% vs SPY) | +3.6% (+2.9% vs SPY) | +4.6% (+9.8% vs SPY) |
| Feb 17, 2026 | Earnings | Earnings: beat the EPS estimate by 33.3% | +4.1% (+3.9% vs SPY) | −18.2% (−18.3% vs SPY) | −10.5% (−8.8% vs SPY) |
Insiders’ record here
In the year on the chart, Axcelis Technologies' insiders reported 0 open-market buys ($0) and 16 sales ($4.4M). Of the 16 old enough to score, 15 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was — and after a sale −17.1%.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Report card: every quarter against the estimate → Axcelis Technologies: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.