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Tetra Tech stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+27.3% to $40.29
Tetra Tech (TTEK) stock rose 27% over the last 252 sessions, to $40.29. On the way it reported 4 quarters, its insiders filed 1 open-market trade, 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 |
|---|---|---|---|---|---|
| Jul 29, 2026 | Earnings | Earnings: beat the EPS estimate by 6.4% | +0.8% (+2.3% vs SPY) | +4.4% (+0.4% vs SPY) | +9.0% (+5.6% vs SPY) |
| May 15, 2026 | Insider buy | Feeler Jeffrey R bought $50K | −0.1% (+1.1% vs SPY) | +3.9% (+4.7% vs SPY) | +6.6% (+5.7% vs SPY) |
| Apr 29, 2026 | Earnings | Earnings: beat the EPS estimate by 6.2% | +1.6% (+1.6% vs SPY) | +0.9% (−0.8% vs SPY) | −12.2% (−18.0% vs SPY) |
| Mar 26, 2026 | 8-K | Directors and officers: departures, appointments, pay | −2.1% (−0.4% vs SPY) | +2.1% (+0.5% vs SPY) | +3.7% (−6.6% vs SPY) |
| Feb 20, 2026 | 8-K | Directors and officers: departures, appointments, pay | −8.0% (−6.9% vs SPY) | −1.3% (−0.8% vs SPY) | −15.1% (−10.3% vs SPY) |
| Jan 28, 2026 | Earnings | Earnings: beat the EPS estimate by 11.7% | −0.6% (−0.6% vs SPY) | +4.4% (+5.3% vs SPY) | −4.8% (−3.9% vs SPY) |
| Jan 6, 2026 | 8-K | Directors and officers: departures, appointments, pay | −2.9% (−2.6% vs SPY) | +4.5% (+4.2% vs SPY) | +15.7% (+17.8% vs SPY) |
| Dec 22, 2025 | 8-K | Directors and officers: departures, appointments, pay | −0.1% (−0.5% vs SPY) | −1.4% (−1.7% vs SPY) | +7.1% (+6.5% vs SPY) |
| Nov 12, 2025 | Earnings | Earnings: beat the EPS estimate by 11.6% | +1.4% (+1.4% vs SPY) | +10.8% (+14.2% vs SPY) | +8.5% (+7.6% vs SPY) |
Insiders’ record here
In the year on the chart, Tetra Tech's insiders reported 1 open-market buy ($50K) 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 +32.3% 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 →
Report card: every quarter against the estimate → Tetra Tech: 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.