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Duolingo stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−17.2% to $160.42
Duolingo (DUOL) stock fell 17% over the last 252 sessions, to $160.42. On the way it reported 4 quarters, its insiders filed 3 open-market trades and 14 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 4, 2026 | Form 144 | Form 144: Stephen Chen plans to sell $474K | +23.1% (+21.5% vs SPY) | — | — |
| Nov 3, 2026 | Earnings | Earnings: missed the EPS estimate by -16.8% | −5.5% (−5.8% vs SPY) | — | — |
| Oct 7, 2026 | Form 144 | Form 144: Luis von Ahn Arellano plans to sell $16.3M | +2.4% (+2.6% vs SPY) | −5.6% (−5.4% vs SPY) | +8.5% (+10.1% vs SPY) |
| Sep 24, 2026 | Form 144 | Form 144: Luis von Ahn Arellano plans to sell $6.8M | +1.2% (+1.3% vs SPY) | −2.5% (−1.8% vs SPY) | −3.2% (−2.6% vs SPY) |
| Sep 22, 2026 | Form 144 | Form 144: Luis von Ahn Arellano plans to sell $540K | −1.1% (−1.1% vs SPY) | −10.7% (−9.6% vs SPY) | −6.8% (−6.2% vs SPY) |
| Sep 21, 2026 | Form 144 | Form 144: Luis von Ahn Arellano plans to sell $5.3M | +5.2% (+3.6% vs SPY) | +1.1% (−0.1% vs SPY) | +0.2% (−0.4% vs SPY) |
| Sep 21, 2026 | Form 144 | Form 144: Luis von AHN Foundation plans to sell $5.0M | +5.2% (+3.6% vs SPY) | +1.1% (−0.1% vs SPY) | +0.2% (−0.4% vs SPY) |
| Sep 16, 2026 | Form 144 | Form 144: Luis von AHN Foundation plans to sell $2.9M | −3.8% (−3.4% vs SPY) | −4.1% (−6.5% vs SPY) | −9.6% (−11.5% vs SPY) |
| Sep 16, 2026 | Form 144 | Form 144: Luis von Ahn Arellano plans to sell $4.4M | −3.8% (−3.4% vs SPY) | −4.1% (−6.5% vs SPY) | −9.6% (−11.5% vs SPY) |
| Sep 14, 2026 | Form 144 | Form 144: Stephen Chen plans to sell $1.2M | +5.1% (+5.5% vs SPY) | −1.3% (−1.2% vs SPY) | +2.8% (+0.8% vs SPY) |
| Sep 8, 2026 | Form 144 | Form 144: William B. Gordon plans to sell $3.1M | −5.4% (−4.8% vs SPY) | −2.2% (−1.0% vs SPY) | −4.2% (−5.6% vs SPY) |
| Aug 18, 2026 | Form 144 | Form 144: Natalie Glance plans to sell $200K | +7.0% (+7.7% vs SPY) | +12.1% (+13.2% vs SPY) | +12.9% (+15.4% vs SPY) |
| Aug 17, 2026 | Form 144 | Form 144: Robert Meese plans to sell $175K | −2.0% (−1.6% vs SPY) | +9.5% (+10.9% vs SPY) | +14.7% (+17.2% vs SPY) |
| Aug 17, 2026 | Form 144 | Form 144: Natalie Glance plans to sell $355K | −2.0% (−1.6% vs SPY) | +9.5% (+10.9% vs SPY) | +14.7% (+17.2% vs SPY) |
| Aug 17, 2026 | Form 144 | Form 144: Stephen Chen plans to sell $132K | −2.0% (−1.6% vs SPY) | +9.5% (+10.9% vs SPY) | +14.7% (+17.2% vs SPY) |
| Aug 17, 2026 | Insider sale | Meese Robert sold $175K | −2.0% (−1.6% vs SPY) | +9.5% (+10.9% vs SPY) | +14.7% (+17.2% vs SPY) |
| Aug 17, 2026 | Insider sale | Chen Stephen C. sold $132K | −2.0% (−1.6% vs SPY) | +9.5% (+10.9% vs SPY) | +14.7% (+17.2% vs SPY) |
| Aug 10, 2026 | 8-K | Directors and officers: departures, appointments, pay | +4.7% (+4.7% vs SPY) | +1.5% (+1.1% vs SPY) | +11.2% (+12.1% vs SPY) |
| Aug 5, 2026 | Earnings | Earnings: missed the EPS estimate by -19.7% | −1.8% (−1.6% vs SPY) | −1.7% (−1.6% vs SPY) | +13.6% (+14.4% vs SPY) |
| May 15, 2026 | Insider sale | Meese Robert sold $159K | +2.6% (+3.8% vs SPY) | −3.3% (−2.5% vs SPY) | +15.2% (+14.3% vs SPY) |
| May 5, 2026 | Earnings | Earnings: missed the EPS estimate by -10.8% | −5.8% (−6.6% vs SPY) | −4.7% (−7.6% vs SPY) | −2.6% (−7.5% vs SPY) |
| Feb 27, 2026 | Earnings | Earnings: missed the EPS estimate by -5.2% | −15.1% (−14.6% vs SPY) | −14.6% (−13.4% vs SPY) | −20.9% (−12.8% vs SPY) |
| Jan 12, 2026 | 8-K | Directors and officers: departures, appointments, pay | −8.8% (−9.0% vs SPY) | −16.2% (−15.9% vs SPY) | −38.1% (−37.8% vs SPY) |
Insiders’ record here
In the year on the chart, Duolingo's insiders reported 0 open-market buys ($0) and 3 sales ($466K). Of the 1 old enough to score, 0 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 +11.6%.
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 → Duolingo: 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.