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On Semiconductor stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+29.7% to $63.31
On Semiconductor (ON) stock rose 30% over the last 252 sessions, to $63.31. On the way it reported 4 quarters, its insiders filed no open-market trades (10b5-1 plan sales aside) and 1 Form 144 notice of planned sales, and the company filed 7 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 2, 2026 | 8-K | Material definitive agreement | +3.5% (+3.2% vs SPY) | — | — |
| Nov 2, 2026 | Earnings | Earnings: beat the EPS estimate by 2.5% | −2.2% (−1.7% vs SPY) | −12.4% (−9.7% vs SPY) | — |
| Oct 1, 2026 | 8-K | Material definitive agreement | +5.8% (+5.1% vs SPY) | −0.8% (−2.1% vs SPY) | −11.1% (−10.0% vs SPY) |
| Oct 1, 2026 | Form 144 | Form 144: Sudhir Gopalswamy plans to sell $1.2M | +4.1% (+3.9% vs SPY) | +7.1% (+5.2% vs SPY) | −2.2% (−3.0% vs SPY) |
| Aug 3, 2026 | Earnings | Earnings: beat the EPS estimate by 3.5% | −1.5% (−2.9% vs SPY) | −0.5% (−4.0% vs SPY) | −9.7% (−12.3% vs SPY) |
| Jun 25, 2026 | 8-K | Material definitive agreement | −27.0% (−26.3% vs SPY) | −26.4% (−27.8% vs SPY) | −28.8% (−29.4% vs SPY) |
| May 18, 2026 | 8-K | Directors and officers: departures, appointments, pay | −3.2% (−2.5% vs SPY) | +14.9% (+13.3% vs SPY) | +3.1% (+2.8% vs SPY) |
| May 12, 2026 | 8-K | Material definitive agreement | +10.6% (+10.0% vs SPY) | +1.8% (+2.4% vs SPY) | +10.8% (+10.8% vs SPY) |
| May 4, 2026 | Earnings | Earnings: beat the EPS estimate by 4.1% | −1.0% (−0.6% vs SPY) | +0.2% (−2.2% vs SPY) | +22.2% (+16.9% vs SPY) |
| Mar 11, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.6% (−0.5% vs SPY) | +2.3% (+3.3% vs SPY) | +13.9% (+13.2% vs SPY) |
| Feb 9, 2026 | Earnings | Earnings: beat the EPS estimate by 2.5% | −0.2% (−0.6% vs SPY) | +10.2% (+11.5% vs SPY) | −9.0% (−7.0% vs SPY) |
| Nov 17, 2025 | 8-K | Material impairment | −1.0% (−0.2% vs SPY) | +2.9% (+2.5% vs SPY) | +14.7% (+13.9% vs SPY) |
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 2.06 Material impairment | 334 | 0.0% | 50% | +0.4% | ±1.9% |
| 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 → On Semiconductor: 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.