Hacker Severin
Chief Tech Officer, Co-Founder · 135 insider transactions on file
All transactions
| Date | Ticker | Company | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2025-12-08 | DUOL | Duolingo, Inc. | C | 50,000 | $0.00 | $0.00 | filing |
| 2025-12-08 | DUOL | Duolingo, Inc. | Gift | 50,000 | $0.00 | $0.00 | filing |
| 2025-11-19 | DUOL | Duolingo, Inc. | Sale | 3,089 | $174.61 | $539,362.26 | filing |
| 2025-11-19 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-11-19 | DUOL | Duolingo, Inc. | Sale | 2,009 | $171.50 | $344,534.46 | filing |
| 2025-11-19 | DUOL | Duolingo, Inc. | Sale | 1,281 | $172.39 | $220,831.21 | filing |
| 2025-11-19 | DUOL | Duolingo, Inc. | Sale | 1,146 | $169.57 | $194,324.13 | filing |
| 2025-11-19 | DUOL | Duolingo, Inc. | Sale | 1,000 | $170.55 | $170,548.80 | filing |
| 2025-11-19 | DUOL | Duolingo, Inc. | Sale | 760 | $173.74 | $132,045.82 | filing |
| 2025-11-19 | DUOL | Duolingo, Inc. | Sale | 435 | $175.46 | $76,323.62 | filing |
| 2025-11-19 | DUOL | Duolingo, Inc. | Sale | 280 | $176.68 | $49,470.79 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | Sale | 1,778 | $261.94 | $465,736.43 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | Sale | 1,727 | $266.12 | $459,594.08 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | Sale | 1,625 | $264.06 | $429,098.48 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | Sale | 1,145 | $266.87 | $305,563.75 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | Sale | 936 | $258.77 | $242,212.65 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | Sale | 760 | $265.02 | $201,412.46 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | Sale | 744 | $257.92 | $191,892.48 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | Sale | 560 | $262.97 | $147,264.54 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | Sale | 560 | $259.71 | $145,436.48 | filing |
| 2025-11-04 | DUOL | Duolingo, Inc. | Sale | 165 | $261.14 | $43,087.84 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 1,600 | $316.64 | $506,616.96 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 1,281 | $312.37 | $400,152.12 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 1,100 | $315.79 | $347,365.37 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 1,000 | $311.43 | $311,428.20 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 907 | $318.73 | $289,084.66 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 680 | $317.68 | $216,024.98 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 632 | $309.94 | $195,881.76 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 600 | $307.55 | $184,531.98 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 500 | $313.93 | $156,966.90 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 500 | $309.06 | $154,532.00 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 400 | $321.75 | $128,699.00 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 300 | $323.09 | $96,927.39 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 300 | $319.97 | $95,991.00 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 100 | $324.10 | $32,410.00 | filing |
| 2025-10-20 | DUOL | Duolingo, Inc. | Sale | 100 | $305.86 | $30,586.00 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 1,916 | $318.26 | $609,793.82 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 1,803 | $320.33 | $577,560.40 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 1,599 | $319.56 | $510,971.64 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 1,300 | $327.44 | $425,675.38 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 1,173 | $321.39 | $376,991.17 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 600 | $326.50 | $195,897.24 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 500 | $325.22 | $162,612.00 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 500 | $317.31 | $158,653.25 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 300 | $324.10 | $97,231.41 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 200 | $328.76 | $65,751.00 | filing |
| 2025-10-06 | DUOL | Duolingo, Inc. | Sale | 109 | $322.62 | $35,166.01 | filing |
| 2025-09-19 | DUOL | Duolingo, Inc. | Sale | 2,300 | $288.81 | $664,268.06 | filing |
| 2025-09-19 | DUOL | Duolingo, Inc. | Sale | 2,300 | $287.81 | $661,973.58 | filing |
| 2025-09-19 | DUOL | Duolingo, Inc. | Sale | 2,200 | $290.78 | $639,725.90 | filing |
| 2025-09-19 | DUOL | Duolingo, Inc. | Sale | 1,900 | $289.79 | $550,600.43 | filing |
| 2025-09-19 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-09-19 | DUOL | Duolingo, Inc. | Sale | 1,300 | $286.77 | $372,805.16 | filing |
| 2025-09-05 | DUOL | Duolingo, Inc. | Sale | 2,100 | $267.93 | $562,656.15 | filing |
| 2025-09-05 | DUOL | Duolingo, Inc. | Sale | 1,956 | $268.92 | $526,001.07 | filing |
| 2025-09-05 | DUOL | Duolingo, Inc. | Sale | 1,647 | $271.05 | $446,412.27 | filing |
| 2025-09-05 | DUOL | Duolingo, Inc. | Sale | 1,600 | $269.87 | $431,798.72 | filing |
| 2025-09-05 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-09-05 | DUOL | Duolingo, Inc. | Sale | 1,148 | $265.95 | $305,311.98 | filing |
| 2025-09-05 | DUOL | Duolingo, Inc. | Sale | 849 | $266.90 | $226,594.02 | filing |
| 2025-09-05 | DUOL | Duolingo, Inc. | Sale | 500 | $264.75 | $132,373.20 | filing |
| 2025-09-05 | DUOL | Duolingo, Inc. | Sale | 200 | $271.57 | $54,314.34 | filing |
| 2025-08-20 | DUOL | Duolingo, Inc. | Gift | 10,000 | $0.00 | $0.00 | filing |
| 2025-08-20 | DUOL | Duolingo, Inc. | C | 10,000 | $0.00 | $0.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 1,979 | $340.92 | $674,675.34 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 1,700 | $340.03 | $578,046.58 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 1,318 | $342.00 | $450,752.57 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 1,003 | $339.15 | $340,165.44 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 600 | $346.15 | $207,687.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 500 | $347.48 | $173,740.15 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 400 | $354.89 | $141,954.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 400 | $351.29 | $140,516.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 400 | $348.83 | $139,530.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 300 | $354.08 | $106,223.01 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 300 | $345.02 | $103,506.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 300 | $343.82 | $103,146.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 200 | $363.05 | $72,610.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 200 | $359.30 | $71,860.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 200 | $352.40 | $70,480.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 100 | $357.67 | $35,767.00 | filing |
| 2025-08-19 | DUOL | Duolingo, Inc. | Sale | 100 | $349.28 | $34,928.00 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 2,205 | $342.56 | $755,348.99 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 2,098 | $340.28 | $713,899.05 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 1,330 | $341.55 | $454,257.24 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 1,133 | $344.99 | $390,868.80 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 931 | $354.45 | $329,989.41 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 600 | $343.43 | $206,059.02 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 400 | $355.06 | $142,025.00 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 403 | $339.32 | $136,744.87 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 300 | $349.25 | $104,774.01 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 200 | $352.75 | $70,549.00 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 200 | $351.08 | $70,215.00 | filing |
| 2025-08-05 | DUOL | Duolingo, Inc. | Sale | 200 | $346.73 | $69,346.00 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 2,445 | $355.31 | $868,723.90 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 1,580 | $364.55 | $575,996.43 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 1,200 | $365.49 | $438,593.04 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 1,100 | $357.47 | $393,220.74 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 854 | $359.65 | $307,138.88 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 728 | $356.20 | $259,316.00 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 620 | $363.40 | $225,310.60 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 373 | $360.54 | $134,479.59 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 300 | $366.32 | $109,895.01 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 300 | $358.39 | $107,517.15 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 200 | $370.05 | $74,010.00 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 200 | $361.87 | $72,374.00 | filing |
| 2025-07-21 | DUOL | Duolingo, Inc. | Sale | 100 | $367.61 | $36,761.00 | filing |
| 2025-07-07 | DUOL | Duolingo, Inc. | Sale | 2,000 | $392.76 | $785,516.80 | filing |
| 2025-07-07 | DUOL | Duolingo, Inc. | Sale | 1,741 | $390.83 | $680,428.24 | filing |
| 2025-07-07 | DUOL | Duolingo, Inc. | Sale | 1,557 | $391.71 | $609,897.45 | filing |
| 2025-07-07 | DUOL | Duolingo, Inc. | Sale | 1,400 | $393.78 | $551,298.72 | filing |
| 2025-07-07 | DUOL | Duolingo, Inc. | Sale | 1,202 | $396.09 | $476,096.93 | filing |
| 2025-07-07 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-07-07 | DUOL | Duolingo, Inc. | Sale | 800 | $394.93 | $315,944.96 | filing |
| 2025-07-07 | DUOL | Duolingo, Inc. | Sale | 600 | $396.73 | $238,039.02 | filing |
| 2025-07-07 | DUOL | Duolingo, Inc. | Sale | 500 | $388.56 | $194,282.05 | filing |
| 2025-07-07 | DUOL | Duolingo, Inc. | Sale | 200 | $386.91 | $77,381.00 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 2,183 | $469.55 | $1.0M | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 1,401 | $470.39 | $659,012.75 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 1,199 | $471.45 | $565,272.87 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 1,017 | $468.40 | $476,362.19 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 928 | $472.54 | $438,512.76 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 900 | $467.46 | $420,711.03 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | C | 10,000 | $38.08 | $380,800.00 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 700 | $476.47 | $333,530.12 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 500 | $474.65 | $237,326.45 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 400 | $478.12 | $191,248.00 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 300 | $466.43 | $139,928.73 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 272 | $473.46 | $128,780.98 | filing |
| 2025-06-20 | DUOL | Duolingo, Inc. | Sale | 200 | $481.35 | $96,270.00 | filing |
Insider transactions from SEC Form 4 filings via EDGAR. Names appear as filed and aren't normalized across issuers.