Severin Hacker's most recent trade in Duolingo Inc - Ordinary Shares - Class A was a trade of 60,000 Class B Common Stock done . Disclosure was reported to the exchange on Dec. 1, 2025.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 01 Dec 2025 | 60,000 | 174,305 | - | - | Class B Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 01 Dec 2025 | 60,000 | 330,000 | - | - | Performance-Based Restricted Stock Units | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Payment of exercise price or tax liability using portion of securities received from the company at price $ 0.00 per share. | 01 Dec 2025 | 31,770 | 142,535 | - | - | Class B Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 01 Dec 2025 | 5,252 | 0 | - | - | Stock Option (Right to Buy) | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 01 Dec 2025 | 5,252 | 147,787 | - | - | Class B Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 19 Nov 2025 | 10,000 | 10,072 | - | 38.1 | 380,800 | Class A Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 19 Nov 2025 | 10,000 | 5,252 | - | - | Stock Option (Right to Buy) | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 19 Nov 2025 | 10,000 | 124,305 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 19 Nov 2025 | 10,000 | 114,305 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 174.61 per share. | 19 Nov 2025 | 3,089 | 787 | - | 174.6 | 539,362 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 171.50 per share. | 19 Nov 2025 | 2,009 | 5,917 | - | 171.5 | 344,534 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 172.39 per share. | 19 Nov 2025 | 1,281 | 4,636 | - | 172.4 | 220,831 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 169.57 per share. | 19 Nov 2025 | 1,146 | 8,926 | - | 169.6 | 194,324 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 170.55 per share. | 19 Nov 2025 | 1,000 | 7,926 | - | 170.5 | 170,549 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 173.74 per share. | 19 Nov 2025 | 760 | 3,876 | - | 173.7 | 132,046 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 175.46 per share. | 19 Nov 2025 | 435 | 352 | - | 175.5 | 76,324 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 176.68 per share. | 19 Nov 2025 | 280 | 72 | - | 176.7 | 49,471 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 04 Nov 2025 | 10,000 | 15,252 | - | - | Stock Option (Right to Buy) | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 04 Nov 2025 | 10,000 | 10,072 | - | 38.1 | 380,800 | Class A Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 04 Nov 2025 | 10,000 | 114,305 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 04 Nov 2025 | 10,000 | 124,305 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 261.94 per share. | 04 Nov 2025 | 1,778 | 5,889 | - | 261.9 | 465,736 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 266.12 per share. | 04 Nov 2025 | 1,727 | 1,217 | - | 266.1 | 459,594 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 264.06 per share. | 04 Nov 2025 | 1,625 | 3,704 | - | 264.1 | 429,098 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 266.87 per share. | 04 Nov 2025 | 1,145 | 72 | - | 266.9 | 305,564 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 258.77 per share. | 04 Nov 2025 | 936 | 8,392 | - | 258.8 | 242,213 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 265.02 per share. | 04 Nov 2025 | 760 | 2,944 | - | 265.0 | 201,412 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 257.92 per share. | 04 Nov 2025 | 744 | 9,328 | - | 257.9 | 191,892 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 262.97 per share. | 04 Nov 2025 | 560 | 5,329 | - | 263.0 | 147,265 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 259.71 per share. | 04 Nov 2025 | 560 | 7,832 | - | 259.7 | 145,436 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 261.14 per share. | 04 Nov 2025 | 165 | 7,667 | - | 261.1 | 43,088 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 20 Oct 2025 | 60,000 | 390,000 | - | - | Performance-Based Restricted Stock Units | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 20 Oct 2025 | 60,000 | 146,075 | - | - | Class B Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Payment of exercise price or tax liability using portion of securities received from the company at price $ 0.00 per share. | 20 Oct 2025 | 31,770 | 114,305 | - | - | Class B Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 20 Oct 2025 | 10,000 | 25,252 | - | - | Stock Option (Right to Buy) | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 20 Oct 2025 | 10,000 | 96,075 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 20 Oct 2025 | 10,000 | 86,075 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 20 Oct 2025 | 10,000 | 10,072 | - | 38.1 | 380,800 | Class A Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 316.64 per share. | 20 Oct 2025 | 1,600 | 2,759 | - | 316.6 | 506,617 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 312.37 per share. | 20 Oct 2025 | 1,281 | 5,959 | - | 312.4 | 400,152 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 315.79 per share. | 20 Oct 2025 | 1,100 | 4,359 | - | 315.8 | 347,365 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 311.43 per share. | 20 Oct 2025 | 1,000 | 7,240 | - | 311.4 | 311,428 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 318.73 per share. | 20 Oct 2025 | 907 | 1,172 | - | 318.7 | 289,085 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 317.68 per share. | 20 Oct 2025 | 680 | 2,079 | - | 317.7 | 216,025 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 309.94 per share. | 20 Oct 2025 | 632 | 8,240 | - | 309.9 | 195,882 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 307.55 per share. | 20 Oct 2025 | 600 | 9,372 | - | 307.6 | 184,532 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 313.93 per share. | 20 Oct 2025 | 500 | 5,459 | - | 313.9 | 156,967 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 309.06 per share. | 20 Oct 2025 | 500 | 8,872 | - | 309.1 | 154,532 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 321.75 per share. | 20 Oct 2025 | 400 | 472 | - | 321.7 | 128,699 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 323.09 per share. | 20 Oct 2025 | 300 | 172 | - | 323.1 | 96,927 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 319.97 per share. | 20 Oct 2025 | 300 | 872 | - | 320.0 | 95,991 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 324.10 per share. | 20 Oct 2025 | 100 | 72 | - | 324.1 | 32,410 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 305.86 per share. | 20 Oct 2025 | 100 | 9,972 | - | 305.9 | 30,586 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 06 Oct 2025 | 10,000 | 10,072 | - | 38.1 | 380,800 | Class A Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 06 Oct 2025 | 10,000 | 86,075 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 06 Oct 2025 | 10,000 | 96,075 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 06 Oct 2025 | 10,000 | 35,252 | - | - | Stock Option (Right to Buy) | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 318.26 per share. | 06 Oct 2025 | 1,916 | 7,656 | - | 318.3 | 609,794 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 320.33 per share. | 06 Oct 2025 | 1,803 | 4,254 | - | 320.3 | 577,560 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 319.56 per share. | 06 Oct 2025 | 1,599 | 6,057 | - | 319.6 | 510,972 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 327.44 per share. | 06 Oct 2025 | 1,300 | 272 | - | 327.4 | 425,675 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 321.39 per share. | 06 Oct 2025 | 1,173 | 3,081 | - | 321.4 | 376,991 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 326.50 per share. | 06 Oct 2025 | 600 | 1,572 | - | 326.5 | 195,897 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 325.22 per share. | 06 Oct 2025 | 500 | 2,172 | - | 325.2 | 162,612 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 317.31 per share. | 06 Oct 2025 | 500 | 9,572 | - | 317.3 | 158,653 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 324.10 per share. | 06 Oct 2025 | 300 | 2,672 | - | 324.1 | 97,231 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 328.76 per share. | 06 Oct 2025 | 200 | 72 | - | 328.8 | 65,751 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 322.62 per share. | 06 Oct 2025 | 109 | 2,972 | - | 322.6 | 35,166 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 19 Sep 2025 | 10,000 | 10,072 | - | 38.1 | 380,800 | Class A Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 19 Sep 2025 | 10,000 | 86,075 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 19 Sep 2025 | 10,000 | 96,075 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 19 Sep 2025 | 10,000 | 45,252 | - | - | Stock Option (Right to Buy) | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 288.81 per share. | 19 Sep 2025 | 2,300 | 4,172 | - | 288.8 | 664,268 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 287.81 per share. | 19 Sep 2025 | 2,300 | 6,472 | - | 287.8 | 661,974 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 290.78 per share. | 19 Sep 2025 | 2,200 | 72 | - | 290.8 | 639,726 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 289.79 per share. | 19 Sep 2025 | 1,900 | 2,272 | - | 289.8 | 550,600 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 286.77 per share. | 19 Sep 2025 | 1,300 | 8,772 | - | 286.8 | 372,805 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 05 Sep 2025 | 10,000 | 96,075 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 05 Sep 2025 | 10,000 | 86,075 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 05 Sep 2025 | 10,000 | 55,252 | - | - | Stock Option (Right to Buy) | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 05 Sep 2025 | 10,000 | 10,072 | - | 38.1 | 380,800 | Class A Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 267.93 per share. | 05 Sep 2025 | 2,100 | 5,475 | - | 267.9 | 562,656 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 268.92 per share. | 05 Sep 2025 | 1,956 | 3,519 | - | 268.9 | 526,001 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 271.05 per share. | 05 Sep 2025 | 1,647 | 272 | - | 271.0 | 446,412 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 269.87 per share. | 05 Sep 2025 | 1,600 | 1,919 | - | 269.9 | 431,799 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 265.95 per share. | 05 Sep 2025 | 1,148 | 8,424 | - | 266.0 | 305,312 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 266.90 per share. | 05 Sep 2025 | 849 | 7,575 | - | 266.9 | 226,594 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 264.75 per share. | 05 Sep 2025 | 500 | 9,572 | - | 264.7 | 132,373 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 271.57 per share. | 05 Sep 2025 | 200 | 72 | - | 271.6 | 54,314 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 20 Aug 2025 | 10,000 | 10,000 | - | 0 | Class A Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Gift of securities by or to the insider at price $ 0.00 per share. | 20 Aug 2025 | 10,000 | 0 | - | 0 | Class A Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 20 Aug 2025 | 10,000 | 2,886,917 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 19 Aug 2025 | 10,000 | 10,072 | - | 38.1 | 380,800 | Class A Common Stock | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 19 Aug 2025 | 10,000 | 96,075 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | 19 Aug 2025 | 10,000 | 86,075 | - | - | Class B Common Stock | ||
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 19 Aug 2025 | 10,000 | 65,252 | - | - | Stock Option (Right to Buy) | |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 340.92 per share. | 19 Aug 2025 | 1,979 | 5,390 | - | 340.9 | 674,675 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 340.03 per share. | 19 Aug 2025 | 1,700 | 7,369 | - | 340.0 | 578,047 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 342.00 per share. | 19 Aug 2025 | 1,318 | 4,072 | - | 342.0 | 450,753 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 339.15 per share. | 19 Aug 2025 | 1,003 | 9,069 | - | 339.1 | 340,165 | Class A Common Stock |
| Duolingo Inc (Class A) | Severin Hacker | Director, Chief Tech Officer, Co-Founder, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 346.14 per share. | 19 Aug 2025 | 600 | 2,872 | - | 346.1 | 207,687 | Class A Common Stock |