PAGEInsider
| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | May 27 '26 | Option Exercise | 0.00 | 120,000 | 0 | 237,193 | May 29 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Feb 17 '26 | Option Exercise | 0.00 | 120,000 | 0 | 270,000 | Feb 20 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Dec 03 '25 | Option Exercise | 19.04 | 10,504 | 199,996 | 147,787 | Dec 03 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Dec 01 '25 | Option Exercise | 0.00 | 120,000 | 0 | 330,000 | Dec 03 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Nov 19 '25 | Sale | 172.74 | 10,000 | 1,727,441 | 72 | Nov 20 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Nov 19 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 5,252 | Nov 20 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Nov 04 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 15,252 | Nov 06 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Nov 04 '25 | Sale | 263.13 | 10,000 | 2,631,298 | 72 | Nov 06 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Oct 20 '25 | Option Exercise | 2.93 | 130,000 | 380,800 | 390,000 | Oct 22 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Oct 20 '25 | Sale | 314.72 | 10,000 | 3,147,198 | 72 | Oct 22 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Oct 06 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 35,252 | Oct 07 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Oct 06 '25 | Sale | 321.63 | 10,000 | 3,216,302 | 72 | Oct 07 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Sep 19 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 45,252 | Sep 22 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Sep 19 '25 | Sale | 288.94 | 10,000 | 2,889,373 | 72 | Sep 22 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Sep 05 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 55,252 | Sep 09 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Sep 05 '25 | Sale | 268.55 | 10,000 | 2,685,461 | 72 | Sep 09 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Aug 19 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 65,252 | Aug 21 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Aug 19 '25 | Sale | 344.56 | 10,000 | 3,445,587 | 72 | Aug 21 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Aug 05 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 75,252 | Aug 07 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Aug 05 '25 | Sale | 344.41 | 10,000 | 3,444,076 | 72 | Aug 07 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Jul 21 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 85,252 | Jul 22 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Jul 21 '25 | Sale | 360.33 | 10,000 | 3,603,337 | 72 | Jul 22 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Jul 07 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 95,252 | Jul 09 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Jul 07 '25 | Sale | 392.89 | 10,000 | 3,928,885 | 72 | Jul 09 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Jun 20 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 105,252 | Jun 23 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Jun 20 '25 | Sale | 471.20 | 10,000 | 4,711,993 | 72 | Jun 23 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Jun 05 '25 | Option Exercise | 38.08 | 10,000 | 380,800 | 115,252 | Jun 09 12:00 AM |
| DUOL | Hacker Severin | Chief Tech Officer, Co-Founder | Jun 05 '25 | Sale | 524.49 | 8,800 | 4,615,474 | 1,272 | Jun 09 12:00 AM |