| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| DUOL | General Counsel | Jun 24, 2022 | Option Exercise | $14.42 | 25,358 | 365,662 | 53,742 | Jun 27, 2022, 07:11 PM |
| DUOL | General Counsel | Jun 24, 2022 | Sale | $103.52 | 25,358 | 2,625,109 | 46,394 | Jun 27, 2022, 07:11 PM |
| DUOL | General Counsel | Jun 21, 2022 | Option Exercise | $14.42 | 10,535 | 151,915 | 38,919 | Jun 22, 2022, 05:42 PM |
| DUOL | General Counsel | Jun 21, 2022 | Sale | $102.14 | 10,535 | 1,076,079 | 28,384 | Jun 22, 2022, 05:42 PM |
| DUOL | General Counsel | Jun 09, 2022 | Option Exercise | $14.42 | 100 | 1,442 | 28,484 | Jun 10, 2022, 04:50 PM |
| DUOL | General Counsel | Jun 08, 2022 | Option Exercise | $14.42 | 4,007 | 57,781 | 32,391 | Jun 10, 2022, 04:50 PM |
| DUOL | General Counsel | Jun 09, 2022 | Sale | $102.12 | 100 | 10,212 | 28,384 | Jun 10, 2022, 04:50 PM |
| DUOL | General Counsel | Jun 08, 2022 | Sale | $102.12 | 4,007 | 409,209 | 28,384 | Jun 10, 2022, 04:50 PM |
| DUOL | General Counsel | May 16, 2022 | Sale | $90.97 | 75 | 6,823 | 28,384 | May 18, 2022, 05:14 PM |
| DUOL | General Counsel | Feb 15, 2022 | Sale | $98.03 | 97 | 9,509 | 4,477 | Feb 24, 2022, 05:39 PM |
| DUOL | General Counsel | Feb 15, 2022 | Sale | $98.01 | 97 | 9,507 | 4,394 | Feb 17, 2022, 07:24 PM |
| DUOL | General Counsel | Nov 15, 2021 | Option Exercise | $14.42 | 17,499 | 252,336 | 21,990 | Nov 17, 2021, 04:52 PM |
| DUOL | General Counsel | Nov 15, 2021 | Sale | $143.28 | 17,840 | 2,556,123 | 20,058 | Nov 17, 2021, 04:52 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| DUOL | General Counsel | Jun 24, 2022 | Option Exercise | 365,662 |
| DUOL | General Counsel | Jun 24, 2022 | Sale | 2,625,109 |
| DUOL | General Counsel | Jun 21, 2022 | Option Exercise | 151,915 |
| DUOL | General Counsel | Jun 21, 2022 | Sale | 1,076,079 |
| DUOL | General Counsel | Jun 09, 2022 | Option Exercise | 1,442 |
| DUOL | General Counsel | Jun 08, 2022 | Option Exercise | 57,781 |
| DUOL | General Counsel | Jun 09, 2022 | Sale | 10,212 |
| DUOL | General Counsel | Jun 08, 2022 | Sale | 409,209 |
| DUOL | General Counsel | May 16, 2022 | Sale | 6,823 |
| DUOL | General Counsel | Feb 15, 2022 | Sale | 9,509 |
| DUOL | General Counsel | Feb 15, 2022 | Sale | 9,507 |
| DUOL | General Counsel | Nov 15, 2021 | Option Exercise | 252,336 |
| DUOL | General Counsel | Nov 15, 2021 | Sale | 2,556,123 |