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Dorman Products stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+5.7% to $136.70
Dorman Products (DORM) stock rose 6% over the last 252 sessions, to $136.70. On the way it reported 0 quarters, its insiders filed 3 open-market trades and 2 Form 144 notices of planned sales, 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 |
|---|---|---|---|---|---|
| Aug 17, 2026 | Form 144 | Form 144: Donna M. Long plans to sell $99K | −2.0% (−1.5% vs SPY) | −3.2% (−1.8% vs SPY) | −8.6% (−6.1% vs SPY) |
| Aug 5, 2026 | Form 144 | Form 144: Gregory C. Bowen plans to sell $512K | −4.3% (−4.1% vs SPY) | −10.5% (−10.4% vs SPY) | −14.0% (−13.2% vs SPY) |
| Aug 5, 2026 | Insider sale | Bowen Gregory C. sold $512K | −4.3% (−4.1% vs SPY) | −10.5% (−10.4% vs SPY) | −14.0% (−13.2% vs SPY) |
| Jun 17, 2026 | 8-K | Material definitive agreement | +2.3% (+1.3% vs SPY) | +9.0% (+9.7% vs SPY) | +11.5% (+11.1% vs SPY) |
| Jan 20, 2026 | 8-K | Directors and officers: departures, appointments, pay | −1.5% (+0.5% vs SPY) | −0.8% (−1.0% vs SPY) | +2.0% (+2.8% vs SPY) |
| Dec 12, 2025 | Insider sale | McKnight John sold $258K | −0.4% (+0.7% vs SPY) | −1.4% (+0.5% vs SPY) | −1.8% (−2.8% vs SPY) |
| Dec 1, 2025 | Insider sale | McKnight John sold $640K | −1.1% (−0.7% vs SPY) | −4.4% (−4.7% vs SPY) | −5.1% (−5.9% vs SPY) |
Insiders’ record here
In the year on the chart, Dorman Products' insiders reported 0 open-market buys ($0) and 3 sales ($1.4M). Of the 3 old enough to score, 3 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 −11.9%.
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 →
Dorman Products: 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.