Chen Stephen C.
Insider CIK 1869758 · DUOL General Counsel
Trades across companies
| Ticker | Code | Trade | Filed | Shares | Price | Value | Owned after | |
|---|---|---|---|---|---|---|---|---|
| DUOL Duolingo, Inc. | S Sale | 2026-09-14 | 2026-09-15 | 5,965 | $150.00 | $894.8K | 43,769 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-09-14 | 2026-09-15 | 2,107 | $147.43 | $310.6K | 49,734 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-09-14 | 2026-09-15 | 5,965 | $150.00 | $894.8K | 43,769 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-09-14 | 2026-09-15 | 2,107 | $147.43 | $310.6K | 49,734 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-08-17 | 2026-08-19 | 1,024 | $129.13 | $132.2K | 51,841 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-08-17 | 2026-08-19 | 1,024 | $129.13 | $132.2K | 51,841 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2026-06-17 | 2026-06-18 | 58 | — | $0 | 0 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2026-06-17 | 2026-06-18 | 58 | $14.42 | $836 | 52,865 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-05-18 | 2026-05-19 | 700 | $114.22 | $80.0K | 52,807 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-05-18 | 2026-05-19 | 1,277 | $113.27 | $144.6K | 53,507 | SEC↗ |
| DUOL Duolingo, Inc. | A Award | 2026-05-15 | 2026-05-19 | 24,411 | $112.06 | $2.74M | 55,604 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-05-15 | 2026-05-19 | 820 | $112.16 | $92.0K | 54,784 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2026-05-12 | 2026-05-13 | 648 | — | $0 | 58 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2026-05-12 | 2026-05-13 | 648 | $14.42 | $9.3K | 31,193 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-02-18 | 2026-02-20 | 80 | $115.47 | $9.2K | 30,545 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-02-18 | 2026-02-20 | 520 | $114.55 | $59.6K | 30,625 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-02-18 | 2026-02-20 | 480 | $113.95 | $54.7K | 31,145 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-02-18 | 2026-02-20 | 821 | $111.83 | $91.8K | 31,625 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2026-02-17 | 2026-02-20 | 896 | $110.06 | $98.6K | 32,446 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2025-12-29 | 2025-12-30 | 1,800 | — | $0 | 706 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2025-12-29 | 2025-12-30 | 1,800 | $14.42 | $26.0K | 33,342 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-11-18 | 2025-11-19 | 120 | $173.97 | $20.9K | 32,936 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-11-18 | 2025-11-19 | 594 | $175.15 | $104.0K | 32,342 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-11-18 | 2025-11-19 | 320 | $175.94 | $56.3K | 32,022 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-11-18 | 2025-11-19 | 480 | $177.19 | $85.1K | 31,542 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-11-17 | 2025-11-19 | 1,282 | $177.95 | $228.1K | 33,056 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2025-09-18 | 2025-09-19 | 1,700 | — | $0 | 2,506 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2025-09-18 | 2025-09-19 | 1,700 | $14.42 | $24.5K | 34,338 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-08-26 | 2025-08-28 | 1,515 | $321.36 | $486.9K | 32,638 | SEC↗ |
| DUOL Duolingo, Inc. | G Gift | 2025-08-15 | 2025-08-15 | 750 | — | $0 | 35,435 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-08-15 | 2025-08-18 | 1,282 | $329.03 | $421.8K | 34,153 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-05-16 | 2025-05-19 | 100 | $530.22 | $53.0K | 36,385 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-05-16 | 2025-05-19 | 467 | $529.25 | $247.2K | 36,485 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-05-16 | 2025-05-19 | 300 | $526.44 | $157.9K | 37,252 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-05-16 | 2025-05-19 | 200 | $531.44 | $106.3K | 36,185 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-05-16 | 2025-05-19 | 300 | $527.61 | $158.3K | 36,952 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-05-16 | 2025-05-19 | 1,268 | $525.07 | $665.8K | 37,552 | SEC↗ |
| DUOL Duolingo, Inc. | A Award | 2025-05-15 | 2025-05-16 | 5,443 | — | $0 | 40,077 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-05-15 | 2025-05-16 | 1,257 | $531.71 | $668.4K | 38,820 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-02-18 | 2025-02-19 | 1,166 | $435.00 | $507.2K | 35,532 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2025-02-18 | 2025-02-19 | 898 | $435.28 | $390.9K | 34,634 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2025-02-06 | 2025-02-07 | 1,331 | — | $0 | 4,206 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2025-02-06 | 2025-02-07 | 1,331 | $14.42 | $19.2K | 36,698 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2024-12-19 | 2024-12-20 | 3,700 | — | $0 | 5,537 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2024-12-19 | 2024-12-20 | 3,700 | $14.42 | $53.4K | 35,367 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-11-18 | 2024-11-20 | 275 | $307.04 | $84.4K | 34,034 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-11-18 | 2024-11-20 | 200 | $312.19 | $62.4K | 31,667 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-11-18 | 2024-11-20 | 400 | $309.87 | $123.9K | 31,867 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-11-18 | 2024-11-20 | 1,767 | $307.95 | $544.1K | 32,267 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-11-15 | 2024-11-18 | 1,249 | $309.30 | $386.3K | 34,309 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2024-08-30 | 2024-09-03 | 7,382 | — | $0 | 9,237 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2024-08-30 | 2024-09-03 | 7,382 | $14.42 | $106.4K | 55,022 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-08-30 | 2024-09-03 | 1,363 | $208.53 | $284.2K | 53,659 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-08-30 | 2024-09-03 | 3,173 | $209.54 | $664.9K | 50,486 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-08-30 | 2024-09-03 | 2,815 | $210.62 | $592.9K | 47,671 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-08-30 | 2024-09-03 | 2,977 | $211.62 | $630.0K | 44,694 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-08-30 | 2024-09-03 | 3,459 | $213.42 | $738.2K | 35,558 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-08-30 | 2024-09-03 | 5,677 | $212.69 | $1.21M | 39,017 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-08-15 | 2024-08-16 | 1,249 | $199.50 | $249.2K | 47,640 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2024-06-28 | 2024-07-02 | 6,715 | — | $0 | 16,619 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2024-06-28 | 2024-07-02 | 6,715 | $14.42 | $96.8K | 48,889 | SEC↗ |
| DUOL Duolingo, Inc. | A Award | 2024-05-15 | 2024-05-16 | 9,117 | — | $0 | 42,174 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-05-15 | 2024-05-16 | 988 | — | $0 | 33,057 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-02-15 | 2024-02-20 | 988 | — | $0 | 34,045 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2024-02-09 | 2024-02-12 | 2,000 | — | $0 | 23,334 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2024-02-09 | 2024-02-12 | 2,000 | $14.42 | $28.8K | 37,033 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-02-09 | 2024-02-12 | 2,000 | $190.00 | $380.0K | 35,033 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2024-01-04 | 2024-01-05 | 18,000 | — | $0 | 25,334 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-01-04 | 2024-01-05 | 365 | $210.29 | $76.8K | 35,033 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-01-04 | 2024-01-05 | 2,091 | $209.01 | $437.0K | 35,398 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-01-04 | 2024-01-05 | 4,722 | $208.17 | $983.0K | 37,489 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-01-04 | 2024-01-05 | 1,586 | $207.19 | $328.6K | 42,211 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-01-04 | 2024-01-05 | 3,840 | $205.98 | $791.0K | 43,797 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2024-01-04 | 2024-01-05 | 5,396 | $205.20 | $1.11M | 47,637 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2024-01-04 | 2024-01-05 | 18,000 | $14.42 | $259.6K | 53,033 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2023-11-15 | 2023-11-16 | 988 | $209.78 | $207.3K | 35,033 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2023-09-11 | 2023-09-12 | 8,842 | — | $0 | 43,334 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2023-09-11 | 2023-09-12 | 100 | $161.00 | $16.1K | 36,021 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2023-09-11 | 2023-09-12 | 8,742 | $160.38 | $1.40M | 36,121 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2023-09-11 | 2023-09-12 | 8,842 | $14.42 | $127.5K | 44,863 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2023-09-08 | 2023-09-12 | 5,325 | — | $0 | 52,176 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2023-09-08 | 2023-09-12 | 5,325 | $14.42 | $76.8K | 41,346 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2023-09-08 | 2023-09-12 | 5,325 | $160.08 | $852.4K | 36,021 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2023-08-15 | 2023-08-17 | 988 | $132.44 | $130.9K | 36,021 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2023-05-15 | 2023-05-16 | 669 | $140.83 | $94.2K | 25,884 | SEC↗ |
| DUOL Duolingo, Inc. | A Award | 2023-05-15 | 2023-05-17 | 11,125 | — | $0 | 37,009 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2023-03-21 | 2023-03-22 | 9,252 | — | $0 | 57,501 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2023-03-21 | 2023-03-22 | 9,252 | $14.42 | $133.4K | 35,805 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2023-03-21 | 2023-03-22 | 9,252 | $130.43 | $1.21M | 26,553 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2023-03-07 | 2023-03-08 | 10,748 | — | $0 | 66,753 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2023-03-07 | 2023-03-08 | 10,748 | $14.42 | $155.0K | 37,301 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2023-03-07 | 2023-03-08 | 10,748 | $130.10 | $1.40M | 26,553 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2023-02-15 | 2023-02-17 | 484 | $96.94 | $46.9K | 26,553 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-11-15 | 2022-11-17 | 674 | $74.31 | $50.1K | 27,037 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-08-15 | 2022-08-17 | 673 | $106.37 | $71.6K | 27,711 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2022-06-24 | 2022-06-27 | 25,358 | — | $0 | 77,501 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-06-24 | 2022-06-27 | 6,201 | $104.50 | $648.0K | 29,481 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-06-24 | 2022-06-27 | 10,712 | $103.42 | $1.11M | 35,682 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-06-24 | 2022-06-27 | 7,348 | $102.57 | $753.7K | 46,394 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2022-06-24 | 2022-06-27 | 25,358 | $14.42 | $365.7K | 53,742 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-06-24 | 2022-06-27 | 1,097 | $105.39 | $115.6K | 28,384 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2022-06-21 | 2022-06-22 | 10,535 | — | $0 | 102,859 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2022-06-21 | 2022-06-22 | 10,535 | $14.42 | $151.9K | 38,919 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-06-21 | 2022-06-22 | 10,535 | $102.14 | $1.08M | 28,384 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2022-06-09 | 2022-06-10 | 100 | — | $0 | 113,394 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2022-06-09 | 2022-06-10 | 100 | $14.42 | $1.4K | 28,484 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-06-09 | 2022-06-10 | 100 | $102.12 | $10.2K | 28,384 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2022-06-08 | 2022-06-10 | 4,007 | — | $0 | 113,494 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2022-06-08 | 2022-06-10 | 4,007 | $14.42 | $57.8K | 32,391 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-06-08 | 2022-06-10 | 4,007 | $102.12 | $409.2K | 28,384 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-05-16 | 2022-05-18 | 75 | $90.97 | $6.8K | 28,384 | SEC↗ |
| DUOL Duolingo, Inc. | A Award | 2022-05-13 | 2022-05-17 | 19,065 | — | $0 | 28,459 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2022-02-28 | 2022-03-02 | 5,000 | — | $0 | 117,501 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2022-02-28 | 2022-03-02 | 5,000 | $14.42 | $72.1K | 9,394 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-02-15 | 2022-02-17 | 97 | $98.01 | $9.5K | 4,394 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-02-15 | 2022-02-24 | 18 | $99.79 | $1.8K | 4,395 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-02-15 | 2022-02-24 | 20 | $99.03 | $2.0K | 4,413 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-02-15 | 2022-02-24 | 17 | $97.75 | $1.7K | 4,433 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-02-15 | 2022-02-24 | 27 | $97.10 | $2.6K | 4,450 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-02-15 | 2022-02-24 | 1 | $100.96 | $101 | 4,394 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2022-02-15 | 2022-02-24 | 14 | $96.24 | $1.3K | 4,477 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2021-11-15 | 2021-11-17 | 17,499 | — | $0 | 122,501 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise deriv | 2021-11-15 | 2021-11-17 | 544 | — | $0 | 0 | SEC↗ |
| DUOL Duolingo, Inc. | A Award | 2021-11-15 | 2021-11-17 | 4,288 | — | $0 | 4,832 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 45 | $138.04 | $6.2K | 4,787 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 37 | $139.01 | $5.1K | 4,750 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 38 | $140.11 | $5.3K | 4,712 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 20 | $141.36 | $2.8K | 4,692 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 6 | $141.90 | $851 | 4,686 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 9 | $143.11 | $1.3K | 4,677 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 26 | $145.34 | $3.8K | 4,651 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 135 | $146.21 | $19.7K | 4,516 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 25 | $146.85 | $3.7K | 4,491 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2021-11-15 | 2021-11-17 | 17,499 | $14.42 | $252.3K | 21,990 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 1,932 | $138.10 | $266.8K | 20,058 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 1,109 | $139.29 | $154.5K | 18,949 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 3,457 | $140.33 | $485.1K | 15,492 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 1,629 | $141.27 | $230.1K | 13,863 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 500 | $143.22 | $71.6K | 13,363 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 600 | $144.71 | $86.8K | 12,763 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 3,339 | $145.91 | $487.2K | 9,424 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 3,530 | $146.48 | $517.1K | 5,894 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 903 | $147.84 | $133.5K | 4,991 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 400 | $148.72 | $59.5K | 4,591 | SEC↗ |
| DUOL Duolingo, Inc. | S Sale | 2021-11-15 | 2021-11-17 | 100 | $150.70 | $15.1K | 4,491 | SEC↗ |
| DUOL Duolingo, Inc. | M Exercise | 2021-11-15 | 2021-11-17 | 544 | — | $0 | 544 | SEC↗ |
| DUOL Duolingo, Inc. | A Award deriv | 2021-08-15 | 2021-09-22 | 544 | — | $0 | 544 | SEC↗ |