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Ametek stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+16.7% to $228.67
Ametek (AME) stock rose 17% over the last 252 sessions, to $228.67. On the way it reported 4 quarters, its insiders filed 2 open-market trades and 1 Form 144 notice of planned sales, and the company filed 4 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 6, 2026 | 8-K | Directors and officers: departures, appointments, pay | — | — | — |
| Nov 3, 2026 | Earnings | Earnings: beat the EPS estimate by 4.8% | +2.7% (+2.4% vs SPY) | — | — |
| Aug 11, 2026 | Insider buy | Stanage Nick L bought $1.0M | +1.3% (+1.7% vs SPY) | +0.5% (+0.6% vs SPY) | −6.8% (−5.4% vs SPY) |
| Aug 7, 2026 | Form 144 | Form 144: David F. Hermance plans to sell $1.7M | +0.9% (+0.3% vs SPY) | +1.9% (+0.7% vs SPY) | −5.6% (−5.8% vs SPY) |
| Aug 7, 2026 | Insider sale | Hermance David F. sold $1.7M | +0.9% (+0.3% vs SPY) | +1.9% (+0.7% vs SPY) | −5.6% (−5.8% vs SPY) |
| Aug 4, 2026 | Earnings | Earnings: beat the EPS estimate by 4.8% | +4.1% (+2.3% vs SPY) | +3.7% (+1.6% vs SPY) | −5.3% (−5.8% vs SPY) |
| Jun 12, 2026 | 8-K | Material definitive agreement | +0.4% (−0.1% vs SPY) | +5.0% (+3.5% vs SPY) | +3.5% (+1.4% vs SPY) |
| May 8, 2026 | 8-K | Directors and officers: departures, appointments, pay | −1.0% (−1.8% vs SPY) | −1.1% (−3.4% vs SPY) | −3.8% (−4.9% vs SPY) |
| Apr 30, 2026 | Earnings | Earnings: beat the EPS estimate by 3.7% | +3.3% (+2.3% vs SPY) | +5.8% (+2.7% vs SPY) | −0.9% (−7.0% vs SPY) |
| Feb 3, 2026 | Earnings | Earnings: beat the EPS estimate by 3.4% | +0.5% (+1.4% vs SPY) | +2.5% (+2.7% vs SPY) | +3.0% (+4.5% vs SPY) |
| Nov 10, 2025 | 8-K | Directors and officers: departures, appointments, pay | +0.9% (−0.7% vs SPY) | −1.5% (−1.7% vs SPY) | 0.0% (−1.8% vs SPY) |
Insiders’ record here
In the year on the chart, Ametek's insiders reported 1 open-market buy ($1.0M) and 1 sale ($1.7M).
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% |
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
| 2.03 New debt or off-balance-sheet obligation | 13,268 | 0.0% | 50% | +1.2% | ±1.3% |
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 → Ametek: 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.