The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Hacker Severin since 2021.
This trader's CIK number is 1870272.
At the time of last reporting, Hacker Severin was the Chief Tech Officer, Co-Founder of Duolingo, Inc.. (stock ticker symbol DUOL).
Also see all insider trading activities at Duolingo, Inc..
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | DUOL | 0 | $0 | 160,000 | $61,680,699 | 0 | $0 |
| 2024 | DUOL | 0 | $0 | 354,248 | $110,331,047 | 0 | $0 |
| 2023 | DUOL | 0 | $0 | 80,000 | $11,563,289 | 0 | $0 |
| 2022 | DUOL | 0 | $0 | 140,000 | $12,643,460 | 10,000 | $0 |
| 2021 | DUOL | 0 | $0 | 80,036 | $9,447,810 | 108 | $0 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-19 | DUOL | Sale | 10,000 | 349.14 | 3,491,370 |
| 2025-08-05 | DUOL | Sale | 10,000 | 346.79 | 3,467,850 |
| 2025-07-21 | DUOL | Sale | 10,000 | 362.07 | 3,620,659 |
| 2025-07-07 | DUOL | Sale | 10,000 | 392.48 | 3,924,780 |
| 2025-06-20 | DUOL | Sale | 10,000 | 472.52 | 4,725,220 |
| 2025-06-05 | DUOL | Sale | 10,000 | 525.26 | 5,252,640 |
| 2025-05-19 | DUOL | Sale | 10,000 | 524.29 | 5,242,900 |
| 2025-05-05 | DUOL | Sale | 10,000 | 495.05 | 4,950,500 |
| 2025-04-21 | DUOL | Sale | 10,000 | 316.05 | 3,160,490 |
| 2025-04-07 | DUOL | Sale | 10,000 | 291.95 | 2,919,520 |
| 2025-03-19 | DUOL | Sale | 10,000 | 297.46 | 2,974,560 |
| 2025-03-05 | DUOL | Sale | 10,000 | 290.81 | 2,908,120 |
| 2025-02-19 | DUOL | Sale | 10,000 | 434.46 | 4,344,570 |
| 2025-02-05 | DUOL | Sale | 10,000 | 396.08 | 3,960,830 |
| 2025-01-21 | DUOL | Sale | 10,000 | 334.39 | 3,343,870 |
| 2025-01-06 | DUOL | Sale | 10,000 | 339.28 | 3,392,820 |
| 2024-12-19 | DUOL | Sale | 10,000 | 338.60 | 3,386,000 |
| 2024-12-13 | DUOL | Sale | 43,826 | 339.80 | 14,891,855 |
| 2024-12-11 | DUOL | Sale | 188,901 | 334.58 | 63,202,307 |
| 2024-12-12 | DUOL | Sale | 41,521 | 340.87 | 14,153,055 |
| 2024-07-01 | DUOL | Sale | 10,000 | 200.41 | 2,004,070 |
| 2024-06-03 | DUOL | Sale | 10,000 | 196.76 | 1,967,610 |
| 2024-05-01 | DUOL | Sale | 10,000 | 225.44 | 2,254,390 |
| 2024-04-01 | DUOL | Sale | 10,000 | 218.65 | 2,186,510 |
| 2024-03-01 | DUOL | Sale | 10,000 | 234.77 | 2,347,730 |
| 2024-02-01 | DUOL | Sale | 10,000 | 178.69 | 1,786,910 |
| 2024-01-02 | DUOL | Sale | 10,000 | 215.06 | 2,150,610 |
| 2023-12-01 | DUOL | Sale | 10,000 | 211.84 | 2,118,430 |
| 2023-11-01 | DUOL | Sale | 10,000 | 146.57 | 1,465,750 |
| 2023-10-02 | DUOL | Sale | 10,000 | 165.93 | 1,659,290 |
| 2023-09-01 | DUOL | Sale | 10,000 | 149.26 | 1,492,649 |
| 2023-05-01 | DUOL | Sale | 10,000 | 137.89 | 1,378,880 |
| 2023-04-03 | DUOL | Sale | 10,000 | 141.83 | 1,418,320 |
| 2023-03-01 | DUOL | Sale | 10,000 | 106.86 | 1,068,650 |
| 2023-02-01 | DUOL | Sale | 10,000 | 96.13 | 961,320 |
| 2022-11-01 | DUOL | Sale | 10,000 | 82.34 | 823,420 |
| 2022-09-01 | DUOL | Sale | 10,000 | 92.30 | 923,040 |
| 2022-08-01 | DUOL | Option Ex | 10,000 | .00 | 0 |
| 2022-08-01 | DUOL | Sale | 10,000 | 93.87 | 938,710 |
| 2022-07-01 | DUOL | Sale | 10,000 | 91.60 | 916,030 |
| 2022-06-23 | DUOL | Sale | 20,000 | 97.39 | 1,947,860 |
| 2022-06-16 | DUOL | Sale | 20,000 | 90.73 | 1,814,660 |
| 2022-06-09 | DUOL | Sale | 20,000 | 98.58 | 1,971,500 |
| 2022-06-01 | DUOL | Sale | 20,000 | 82.71 | 1,654,120 |
| 2022-06-01 | DUOL | Sale | 20,000 | 82.71 | 1,654,120 |
| 2021-12-08 | DUOL | Option Ex | 108 | .00 | 0 |
| 2021-12-08 | DUOL | Sale | 36 | 110.01 | 3,960 |
| 2021-11-15 | DUOL | Sale | 30,000 | 144.79 | 4,343,850 |
| 2021-07-30 | DUOL | Sale | 50,000 | 102.00 | 5,100,000 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Hacker Severin (Chief Tech Officer, Co-Founder of Duolingo, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.