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Gentherm stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−12.7% to $29.47
Gentherm (THRM) stock fell 13% over the last 252 sessions, to $29.47. On the way it reported 0 quarters, its insiders filed 4 open-market trades and 2 Form 144 notices of planned sales, and the company filed 9 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 |
|---|---|---|---|---|---|
| Oct 23, 2026 | Insider buy | Presley William T. bought $130K | +9.0% (+9.5% vs SPY) | +20.8% (+20.1% vs SPY) | — |
| Oct 23, 2026 | Insider buy | Mascarenas Paul Anthony bought $533K | +9.0% (+9.5% vs SPY) | +20.8% (+20.1% vs SPY) | — |
| Oct 1, 2026 | 8-K | Material definitive agreement | −0.8% (−1.6% vs SPY) | −5.3% (−6.6% vs SPY) | −2.0% (−0.9% vs SPY) |
| Aug 17, 2026 | Form 144 | Form 144: Nicholas William Breisacher plans to sell $40K | −1.5% (−1.0% vs SPY) | −8.4% (−7.0% vs SPY) | −14.4% (−12.0% vs SPY) |
| Aug 17, 2026 | Insider sale | Nicholas Breisacher sold $40K | −1.5% (−1.0% vs SPY) | −8.4% (−7.0% vs SPY) | −14.4% (−12.0% vs SPY) |
| Jul 29, 2026 | Form 144 | Form 144: Wayne Kauffman plans to sell $203K | +1.9% (+3.5% vs SPY) | +2.3% (−1.7% vs SPY) | −4.6% (−8.0% vs SPY) |
| Jul 29, 2026 | Insider sale | Kauffman Wayne S III sold $203K | +1.9% (+3.5% vs SPY) | +2.3% (−1.7% vs SPY) | −4.6% (−8.0% vs SPY) |
| Jul 23, 2026 | 8-K | Completed acquisition or disposition | +23.5% (+24.8% vs SPY) | +17.4% (+19.8% vs SPY) | +12.0% (+10.0% vs SPY) |
| Jul 2, 2026 | 8-K | Material definitive agreement | −1.1% (−1.0% vs SPY) | +4.0% (+3.2% vs SPY) | +16.9% (+16.7% vs SPY) |
| May 19, 2026 | 8-K | Directors and officers: departures, appointments, pay | +4.1% (+3.0% vs SPY) | +14.7% (+12.5% vs SPY) | +18.2% (+16.1% vs SPY) |
| Apr 23, 2026 | 8-K | Material definitive agreement | +2.8% (+2.1% vs SPY) | +1.6% (+0.2% vs SPY) | +10.0% (+4.9% vs SPY) |
| Mar 25, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.1% (−0.7% vs SPY) | −3.6% (−3.2% vs SPY) | +2.8% (−5.3% vs SPY) |
| Mar 17, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.4% (+1.1% vs SPY) | +2.2% (+4.6% vs SPY) | +1.0% (−3.7% vs SPY) |
| Feb 27, 2026 | 8-K | Material definitive agreement | −1.4% (−1.5% vs SPY) | −10.7% (−8.7% vs SPY) | −18.6% (−10.6% vs SPY) |
| Jan 29, 2026 | 8-K | Material definitive agreement | −11.5% (−11.2% vs SPY) | −11.4% (−9.0% vs SPY) | −10.4% (−9.2% vs SPY) |
Insiders’ record here
In the year on the chart, Gentherm's insiders reported 2 open-market buys ($663K) and 2 sales ($243K). 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 — and after a sale −31.3%.
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 |
|---|---|---|---|---|---|
| 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% |
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
| 2.01 Completed acquisition or disposition | 2,671 | +0.1% | 52% | +1.2% | ±1.6% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Gentherm: 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.