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Newmarket stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−7.6% to $694.31
Newmarket (NEU) stock fell 8% over the last 252 sessions, to $694.31. On the way it reported 0 quarters, its insiders filed 1 open-market trade, 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 |
|---|---|---|---|---|---|
| Feb 26, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.5% (0.0% vs SPY) | +2.7% (+3.9% vs SPY) | +0.3% (+8.4% vs SPY) |
| Feb 24, 2026 | Insider buy | Xu Ting bought $248K | +2.9% (+2.1% vs SPY) | +3.7% (+3.2% vs SPY) | +3.5% (+7.6% vs SPY) |
| Feb 18, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.2% (0.0% vs SPY) | +1.3% (+0.3% vs SPY) | +0.3% (+4.3% vs SPY) |
| Dec 9, 2025 | 8-K | Directors and officers: departures, appointments, pay | +2.7% (+2.1% vs SPY) | −4.1% (−3.5% vs SPY) | −3.2% (−5.0% vs SPY) |
Insiders’ record here
In the year on the chart, Newmarket's insiders reported 1 open-market buy ($248K) and 0 sales ($0). Of the 1 old enough to score, 1 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 +13.8% and after a sale —.
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 →
Newmarket: 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.