Severin Hacker Insider Trading Activity
Corporate InsiderChief Tech Officer, Co-Founder · CIK 1870272
Severin Hacker has been net-selling over the last 12 months with 0 purchases and 71 sales across 1 company.
DUOL is the most-traded position with 71 trades. The largest single transaction was a sale of DUOL for $755K on Aug 5, 2025.
Performance Scorecard
Forward stock performance after each transaction by Severin Hacker. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | +16.1% | 82% | 113 |
| 90 days | — | +36.5% | 100% | 113 |
| 120 days | — | +47.2% | 100% | 113 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersDUOL · Duolingo, Inc.
🔒 Subscribe to see trade entries
Pro members see exactly when Severin Hacker bought and sold DUOL.
Upgrade to ProRecent Trades
Showing the 50 most recent of 113 disclosed trades.
| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
Nov 19, 2025 | DUOL | Sell | 3,089 | $174.61 | $539K | −79.7% | Chief Tech Officer, Co-Founder | |
Nov 19, 2025 | DUOL | Sell | 280 | $176.68 | $49K | −79.5% | Chief Tech Officer, Co-Founder | |
Nov 19, 2025 | DUOL | Sell | 760 | $173.74 | $132K | −16.4% | Chief Tech Officer, Co-Founder | |
Nov 19, 2025 | DUOL | Sell | 1,000 | $170.55 | $171K | −11.2% | Chief Tech Officer, Co-Founder | |
Nov 19, 2025 | DUOL | Sell | 1,146 | $169.57 | $194K | −11.4% | Chief Tech Officer, Co-Founder | |
Nov 19, 2025 | DUOL | Sell | 435 | $175.46 | $76K | −55.3% | Chief Tech Officer, Co-Founder | |
Nov 19, 2025 | DUOL | Sell | 2,009 | $171.50 | $345K | −25.3% | Chief Tech Officer, Co-Founder | |
Nov 19, 2025 | DUOL | Sell | 1,281 | $172.39 | $221K | −21.6% | Chief Tech Officer, Co-Founder | |
Nov 4, 2025 | DUOL | Sell | 165 | $261.14 | $43K | −2.1% | Chief Tech Officer, Co-Founder | |
Nov 4, 2025 | DUOL | Sell | 1,778 | $261.94 | $466K | −23.2% | Chief Tech Officer, Co-Founder | |
Nov 4, 2025 | DUOL | Sell | 936 | $258.77 | $242K | −10.0% | Chief Tech Officer, Co-Founder | |
Nov 4, 2025 | DUOL | Sell | 1,625 | $264.06 | $429K | −30.5% | Chief Tech Officer, Co-Founder | |
Nov 4, 2025 | DUOL | Sell | 560 | $259.71 | $145K | −6.7% | Chief Tech Officer, Co-Founder | |
Nov 4, 2025 | DUOL | Sell | 1,145 | $266.87 | $306K | −94.1% | Chief Tech Officer, Co-Founder | |
Nov 4, 2025 | DUOL | Sell | 1,727 | $266.12 | $460K | −58.7% | Chief Tech Officer, Co-Founder | |
Nov 4, 2025 | DUOL | Sell | 744 | $257.92 | $192K | −7.4% | Chief Tech Officer, Co-Founder | |
Nov 4, 2025 | DUOL | Sell | 760 | $265.02 | $201K | −20.5% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 1,100 | $315.79 | $347K | −20.2% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 400 | $321.75 | $129K | −45.9% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 100 | $305.86 | $31K | −1.0% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 680 | $317.68 | $216K | −24.6% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 1,600 | $316.64 | $507K | −36.7% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 1,281 | $312.37 | $400K | −17.7% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 300 | $319.97 | $96K | −25.6% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 1,000 | $311.43 | $311K | −12.1% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 907 | $318.73 | $289K | −43.6% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 500 | $309.06 | $155K | −5.3% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 600 | $307.55 | $185K | −6.0% | Chief Tech Officer, Co-Founder | |
Oct 20, 2025 | DUOL | Sell | 632 | $309.94 | $196K | −7.1% | Chief Tech Officer, Co-Founder | |
Oct 6, 2025 | DUOL | Sell | 1,916 | $318.26 | $610K | −20.0% | Chief Tech Officer, Co-Founder | |
Oct 6, 2025 | DUOL | Sell | 1,599 | $319.56 | $511K | −20.9% | Chief Tech Officer, Co-Founder | |
Oct 6, 2025 | DUOL | Sell | 500 | $317.31 | $159K | −5.0% | Chief Tech Officer, Co-Founder | |
Oct 6, 2025 | DUOL | Sell | 1,300 | $327.44 | $426K | −82.7% | Chief Tech Officer, Co-Founder | |
Oct 6, 2025 | DUOL | Sell | 600 | $326.50 | $196K | −27.6% | Chief Tech Officer, Co-Founder | |
Oct 6, 2025 | DUOL | Sell | 300 | $324.10 | $97K | −10.1% | Chief Tech Officer, Co-Founder | |
Oct 6, 2025 | DUOL | Sell | 109 | $322.62 | $35K | −3.5% | Chief Tech Officer, Co-Founder | |
Oct 6, 2025 | DUOL | Sell | 1,173 | $321.39 | $377K | −27.6% | Chief Tech Officer, Co-Founder | |
Oct 6, 2025 | DUOL | Sell | 200 | $328.75 | $66K | −73.5% | Chief Tech Officer, Co-Founder | |
Oct 6, 2025 | DUOL | Sell | 1,803 | $320.33 | $578K | −29.8% | Chief Tech Officer, Co-Founder | |
Sep 19, 2025 | DUOL | Sell | 2,300 | $287.81 | $662K | −26.2% | Chief Tech Officer, Co-Founder | |
Sep 19, 2025 | DUOL | Sell | 1,300 | $286.77 | $373K | −12.9% | Chief Tech Officer, Co-Founder | |
Sep 19, 2025 | DUOL | Sell | 1,900 | $289.79 | $551K | −45.5% | Chief Tech Officer, Co-Founder | |
Sep 19, 2025 | DUOL | Sell | 2,200 | $290.78 | $640K | −96.8% | Chief Tech Officer, Co-Founder | |
Sep 5, 2025 | DUOL | Sell | 1,647 | $271.05 | $446K | −85.8% | Chief Tech Officer, Co-Founder | |
Sep 5, 2025 | DUOL | Sell | 1,600 | $269.87 | $432K | −45.5% | Chief Tech Officer, Co-Founder | |
Sep 5, 2025 | DUOL | Sell | 1,956 | $268.92 | $526K | −35.7% | Chief Tech Officer, Co-Founder | |
Sep 5, 2025 | DUOL | Sell | 2,100 | $267.93 | $563K | −27.7% | Chief Tech Officer, Co-Founder | |
Sep 5, 2025 | DUOL | Sell | 849 | $266.90 | $227K | −10.1% | Chief Tech Officer, Co-Founder | |
Sep 5, 2025 | DUOL | Sell | 1,148 | $265.95 | $305K | −12.0% | Chief Tech Officer, Co-Founder | |
Sep 5, 2025 | DUOL | Sell | 500 | $264.75 | $132K | −5.0% | Chief Tech Officer, Co-Founder |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| DUOL | Duolingo, Inc. | 113 | $37.9M |
Other insiders at Duolingo, Inc.
4 other tracked filers at DUOL.