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Willdan Group stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−22.4% to $66.22
Willdan Group (WLDN) stock fell 22% over the last 252 sessions, to $66.22. On the way it reported 5 quarters, its insiders filed 6 open-market trades and 3 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 |
|---|---|---|---|---|---|
| Nov 5, 2026 | Earnings | Earnings: beat the EPS estimate by 12.7% | −4.6% (−0.1% vs SPY) | — | — |
| Sep 23, 2026 | 8-K | Material definitive agreement | −2.2% (−2.1% vs SPY) | −9.7% (−9.0% vs SPY) | −12.1% (−11.6% vs SPY) |
| Sep 15, 2026 | Form 144 | Form 144: Thomas Brisbin plans to sell $389K | −4.7% (−4.2% vs SPY) | −1.6% (−3.5% vs SPY) | −9.5% (−12.0% vs SPY) |
| Sep 15, 2026 | Insider sale | Brisbin Thomas Donald sold $389K | −4.7% (−4.2% vs SPY) | −1.6% (−3.5% vs SPY) | −9.5% (−12.0% vs SPY) |
| Sep 8, 2026 | Form 144 | Form 144: Thomas Brisbin plans to sell $303K | +1.7% (+2.2% vs SPY) | −5.1% (−3.9% vs SPY) | −14.9% (−16.3% vs SPY) |
| Sep 8, 2026 | Insider sale | Brisbin Thomas Donald sold $303K | +1.7% (+2.2% vs SPY) | −5.1% (−3.9% vs SPY) | −14.9% (−16.3% vs SPY) |
| Sep 3, 2026 | Form 144 | Form 144: Thomas Brisbin plans to sell $5.2M | −0.6% (−1.6% vs SPY) | −6.6% (−5.7% vs SPY) | −17.5% (−18.3% vs SPY) |
| Sep 3, 2026 | Insider sale | Brisbin Thomas Donald sold $5.2M | −0.6% (−1.6% vs SPY) | −6.6% (−5.7% vs SPY) | −17.5% (−18.3% vs SPY) |
| Aug 6, 2026 | Earnings | Earnings: beat the EPS estimate by 70.4% | −0.6% (−0.4% vs SPY) | +13.6% (+13.2% vs SPY) | +16.1% (+15.6% vs SPY) |
| Jun 18, 2026 | 8-K | Directors and officers: departures, appointments, pay | −7.0% (−6.7% vs SPY) | −9.0% (−6.6% vs SPY) | −20.0% (−20.2% vs SPY) |
| May 14, 2026 | Insider sale | Bieber Michael A sold $5.2M | +0.7% (−0.1% vs SPY) | +1.7% (+1.8% vs SPY) | +5.6% (+5.6% vs SPY) |
| May 13, 2026 | Insider sale | Bieber Michael A sold $926K | −2.1% (−2.6% vs SPY) | −4.7% (−4.1% vs SPY) | +4.7% (+4.8% vs SPY) |
| May 7, 2026 | Earnings | Earnings: beat the EPS estimate by 13.0% | −1.6% (−1.3% vs SPY) | +18.5% (+17.3% vs SPY) | +25.0% (+24.5% vs SPY) |
| Mar 6, 2026 | Insider sale | Cohen Steven A sold $491K | +0.9% (+2.2% vs SPY) | −2.9% (−0.6% vs SPY) | −4.1% (−1.0% vs SPY) |
| Feb 26, 2026 | Earnings | Earnings: beat the EPS estimate by 98.7% | +2.1% (+2.7% vs SPY) | −33.4% (−32.2% vs SPY) | −37.9% (−31.0% vs SPY) |
| Nov 6, 2025 | Earnings | Earnings: beat the EPS estimate by 49.4% | −9.9% (−8.8% vs SPY) | 0.0% (−0.8% vs SPY) | +10.3% (+9.1% vs SPY) |
Insiders’ record here
In the year on the chart, Willdan Group's insiders reported 0 open-market buys ($0) and 6 sales ($12.5M). Of the 3 old enough to score, 2 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 −9.5%.
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% |
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 → Willdan Group: 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.