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Cognex stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+21.7% to $47.78
Cognex (CGNX) stock rose 22% over the last 252 sessions, to $47.78. On the way it reported 4 quarters, its insiders filed 5 open-market trades and 3 Form 144 notices of planned sales, and the company filed 3 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 4, 2026 | Earnings | Earnings: beat the EPS estimate by 2.0% | −9.1% (−10.7% vs SPY) | — | — |
| Aug 11, 2026 | Form 144 | Form 144: Matthew Moschner plans to sell $1.6M | −2.3% (−2.0% vs SPY) | +3.4% (+3.5% vs SPY) | −3.8% (−2.4% vs SPY) |
| Aug 11, 2026 | Insider sale | Moschner Matthew sold $1.6M | −2.3% (−2.0% vs SPY) | +3.4% (+3.5% vs SPY) | −3.8% (−2.4% vs SPY) |
| Aug 5, 2026 | Earnings | Earnings: beat the EPS estimate by 5.9% | −1.1% (−0.9% vs SPY) | −12.8% (−12.7% vs SPY) | −17.5% (−16.7% vs SPY) |
| Jun 30, 2026 | Form 144 | Form 144: Robert Willett plans to sell $12.3M | +5.8% (+5.0% vs SPY) | −6.3% (−7.2% vs SPY) | −16.7% (−15.2% vs SPY) |
| Jun 29, 2026 | Form 144 | Form 144: Robert Willett plans to sell $596K | +2.7% (+1.0% vs SPY) | +4.3% (+1.3% vs SPY) | −9.8% (−11.4% vs SPY) |
| May 27, 2026 | Insider sale | Long Darren Marc sold $1.3M | −2.4% (−2.4% vs SPY) | −3.3% (−4.5% vs SPY) | −2.6% (−0.7% vs SPY) |
| May 12, 2026 | Insider sale | Macdonald Laura Ann sold $2.7M | −2.4% (−2.2% vs SPY) | −8.3% (−8.2% vs SPY) | −13.5% (−11.6% vs SPY) |
| May 11, 2026 | Insider sale | Macdonald Laura Ann sold $6.6M | +2.4% (+2.2% vs SPY) | −2.2% (−2.4% vs SPY) | −6.7% (−6.7% vs SPY) |
| May 11, 2026 | Insider sale | Fennell Mark sold $4.3M | +2.4% (+2.2% vs SPY) | −2.2% (−2.4% vs SPY) | −6.7% (−6.7% vs SPY) |
| May 6, 2026 | Earnings | Earnings: beat the EPS estimate by 37.1% | +5.7% (+4.3% vs SPY) | +11.0% (+9.0% vs SPY) | +9.6% (+5.1% vs SPY) |
| Apr 30, 2026 | 8-K | Directors and officers: departures, appointments, pay | +0.8% (+0.5% vs SPY) | +17.2% (+15.4% vs SPY) | +15.3% (+9.9% vs SPY) |
| Feb 19, 2026 | 8-K | Change in auditor | +0.2% (−0.6% vs SPY) | −0.9% (−1.6% vs SPY) | −12.6% (−7.5% vs SPY) |
| Feb 17, 2026 | 8-K | Directors and officers: departures, appointments, pay | −2.9% (−3.1% vs SPY) | −4.0% (−4.1% vs SPY) | −15.8% (−14.2% vs SPY) |
| Feb 11, 2026 | Earnings | Earnings: beat the EPS estimate by 22.9% | −1.3% (−1.2% vs SPY) | +26.3% (+27.2% vs SPY) | +11.4% (+15.3% vs SPY) |
Insiders’ record here
In the year on the chart, Cognex's insiders reported 0 open-market buys ($0) and 5 sales ($16.6M). Of the 4 old enough to score, 4 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 −10.7%.
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% |
| 4.01 Change in auditor | 538 | 0.0% | 49% | −0.1% | ±1.7% |
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 → Cognex: 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.