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Kaiser Aluminum stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+19.0% to $106.84
Kaiser Aluminum (KALU) stock rose 19% over the last 252 sessions, to $106.84. On the way it reported 0 quarters, its insiders filed 10 open-market trades, 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 |
|---|---|---|---|---|---|
| Aug 17, 2026 | 8-K | Directors and officers: departures, appointments, pay | −14.0% (−13.3% vs SPY) | −19.6% (−18.4% vs SPY) | −19.7% (−17.2% vs SPY) |
| Jun 4, 2026 | 8-K | Directors and officers: departures, appointments, pay | −5.5% (−2.9% vs SPY) | +0.5% (+3.0% vs SPY) | −9.0% (−8.0% vs SPY) |
| Apr 29, 2026 | Insider sale | Harvey Keith sold $525K | −0.2% (−0.1% vs SPY) | +1.8% (+0.1% vs SPY) | +6.3% (+0.4% vs SPY) |
| Apr 29, 2026 | Insider sale | Grimley Richard P. sold $261K | −0.2% (−0.1% vs SPY) | +1.8% (+0.1% vs SPY) | +6.3% (+0.4% vs SPY) |
| Apr 28, 2026 | Insider sale | West Neal E sold $866K | −1.2% (−0.7% vs SPY) | −3.2% (−3.6% vs SPY) | +6.7% (+1.9% vs SPY) |
| Apr 27, 2026 | Insider sale | Wilcox Brett sold $2.6M | −1.7% (−1.8% vs SPY) | −2.4% (−3.3% vs SPY) | +4.2% (−0.8% vs SPY) |
| Apr 27, 2026 | Insider sale | Harvey Keith sold $8.2M | −1.7% (−1.8% vs SPY) | −2.4% (−3.3% vs SPY) | +4.2% (−0.8% vs SPY) |
| Apr 27, 2026 | Insider sale | Gheorghe Iulian sold $30K | −1.7% (−1.8% vs SPY) | −2.4% (−3.3% vs SPY) | +4.2% (−0.8% vs SPY) |
| Apr 27, 2026 | Insider sale | Donnan John Malcolm sold $489K | −1.7% (−1.8% vs SPY) | −2.4% (−3.3% vs SPY) | +4.2% (−0.8% vs SPY) |
| Feb 23, 2026 | Insider sale | West Neal E sold $609K | −2.5% (−1.5% vs SPY) | +0.9% (+1.4% vs SPY) | −14.7% (−9.9% vs SPY) |
| Feb 23, 2026 | Insider sale | Donnan John Malcolm sold $2.3M | −2.5% (−1.5% vs SPY) | +0.9% (+1.4% vs SPY) | −14.7% (−9.9% vs SPY) |
| Jan 7, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.2% (−0.1% vs SPY) | +3.9% (+3.8% vs SPY) | +12.6% (+12.5% vs SPY) |
| Nov 17, 2025 | 8-K | Directors and officers: departures, appointments, pay | −1.9% (−1.1% vs SPY) | +1.7% (+1.3% vs SPY) | +19.4% (+18.5% vs SPY) |
| Nov 7, 2025 | Insider sale | Tiffany Blain sold $813K | +3.0% (+2.9% vs SPY) | +2.0% (+1.7% vs SPY) | +10.8% (+8.8% vs SPY) |
Insiders’ record here
In the year on the chart, Kaiser Aluminum's insiders reported 0 open-market buys ($0) and 10 sales ($16.7M). Of the 10 old enough to score, 7 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 −10.9%.
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% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Kaiser Aluminum: 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.