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Vertex stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−10.6% to $17.08
Vertex (VERX) stock fell 11% over the last 252 sessions, to $17.08. On the way it reported 4 quarters, its insiders filed 6 open-market trades, 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 |
|---|---|---|---|---|---|
| Nov 4, 2026 | Earnings | Earnings: beat the EPS estimate by 15.3% | +4.2% (+2.6% vs SPY) | — | — |
| Oct 1, 2026 | 8-K | Directors and officers: departures, appointments, pay | −2.4% (−3.1% vs SPY) | +3.7% (+2.4% vs SPY) | +21.9% (+23.0% vs SPY) |
| Aug 3, 2026 | Earnings | Earnings: beat the EPS estimate by 4.8% | +3.7% (+2.3% vs SPY) | −7.8% (−11.3% vs SPY) | +9.2% (+6.6% vs SPY) |
| May 28, 2026 | Insider sale | DeStefano David sold $82K | +0.8% (+0.2% vs SPY) | +2.0% (+1.5% vs SPY) | −9.8% (−7.2% vs SPY) |
| May 7, 2026 | Earnings | Earnings: beat the EPS estimate by 3.3% | +14.7% (+15.0% vs SPY) | +0.6% (−0.5% vs SPY) | +3.9% (+3.4% vs SPY) |
| Apr 28, 2026 | 8-K | Exit or disposal costs | −2.9% (−2.9% vs SPY) | +7.7% (+6.0% vs SPY) | +0.1% (−5.8% vs SPY) |
| Mar 9, 2026 | Insider buy | Item Second IRR. Trust FBO Kyle R. Westphal u/a of Jeffrey R. Westphal dated Oct bought $150K | −2.1% (−2.9% vs SPY) | −13.7% (−12.2% vs SPY) | −24.6% (−22.9% vs SPY) |
| Feb 23, 2026 | Insider buy | Young Christopher David bought $731K | −5.7% (−4.7% vs SPY) | +12.8% (+13.3% vs SPY) | +2.5% (+7.3% vs SPY) |
| Feb 20, 2026 | Insider buy | Andersen Eric C. bought $516K | −0.5% (−1.3% vs SPY) | +14.7% (+14.0% vs SPY) | +0.4% (+5.5% vs SPY) |
| Feb 17, 2026 | Insider buy | Westphal Jeffrey bought $1.9M | −3.3% (−3.4% vs SPY) | −5.8% (−5.9% vs SPY) | +3.4% (+5.1% vs SPY) |
| Feb 13, 2026 | Insider buy | Westphal Jeffrey bought $3.2M | +3.0% (+3.0% vs SPY) | +2.9% (+1.8% vs SPY) | +6.9% (+8.7% vs SPY) |
| Feb 11, 2026 | Earnings | Earnings: beat the EPS estimate by 3.5% | −14.8% (−14.8% vs SPY) | −20.8% (−19.9% vs SPY) | −8.0% (−4.1% vs SPY) |
| Nov 20, 2025 | 8-K | Material definitive agreement | +1.3% (+0.3% vs SPY) | +0.7% (−3.9% vs SPY) | +3.7% (−1.4% vs SPY) |
Insiders’ record here
In the year on the chart, Vertex's insiders reported 5 open-market buys ($6.5M) and 1 sale ($82K). Of the 6 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 −4.3% 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 |
|---|---|---|---|---|---|
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
| 2.05 Exit or disposal costs | 954 | −0.2% | 47% | +0.5% | ±2.4% |
| 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 → Vertex: 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.