Duolingo, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Date |
|---|---|---|---|---|---|---|
| Chen Stephen C. | General Counsel | Option Exercise | 1,800 | $14.42 | $25,956 | Dec 29, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | C | 50,000 | — | — | Dec 8, 2025 |
| Glance Natalie | Chief Engineering Officer | Option Exercise | 9,500 | $5.00 | $47,500 | Dec 5, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 280 | $176.68 | $49,470 | Nov 19, 2025 |
| Chen Stephen C. | General Counsel | Sale | 120 | $173.97 | $20,876 | Nov 18, 2025 |
| Skaruppa Matthew | Chief Financial Officer | Sale | 880 | $175.73 | $154,642 | Nov 18, 2025 |
| Glance Natalie | Chief Engineering Officer | Sale | 160 | $177.60 | $28,416 | Nov 18, 2025 |
| Meese Robert | Chief Business Officer | Sale | 1,444 | $177.95 | $256,960 | Nov 17, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 1,778 | $261.94 | $465,729 | Nov 4, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 680 | $317.68 | $216,022 | Oct 20, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 500 | $317.31 | $158,655 | Oct 6, 2025 |
| Glance Natalie | Chief Engineering Officer | Sale | 600 | $317.96 | $190,776 | Oct 1, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 2,300 | $287.81 | $661,963 | Sep 19, 2025 |
| Chen Stephen C. | General Counsel | Option Exercise | 1,700 | $14.42 | $24,514 | Sep 18, 2025 |
| Meese Robert | Chief Business Officer | Option Exercise | 5,000 | $8.15 | $40,750 | Sep 11, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 2,100 | $267.93 | $562,653 | Sep 5, 2025 |
| Chen Stephen C. | General Counsel | Sale | 1,515 | $321.36 | $486,860 | Aug 26, 2025 |
| Skaruppa Matthew | Chief Financial Officer | Sale | 1,578 | $321.33 | $507,059 | Aug 26, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Gift | 10,000 | — | — | Aug 20, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 1,003 | $339.15 | $340,167 | Aug 19, 2025 |
| Glance Natalie | Chief Engineering Officer | Sale | 900 | $366.16 | $329,544 | Aug 18, 2025 |
| Chen Stephen C. | General Counsel | Sale | 1,282 | $329.03 | $421,816 | Aug 15, 2025 |
| Skaruppa Matthew | Chief Financial Officer | Sale | 2,797 | $329.03 | $920,297 | Aug 15, 2025 |
| Glance Natalie | Chief Engineering Officer | Sale | 2,533 | $329.03 | $833,433 | Aug 15, 2025 |
| Meese Robert | Chief Business Officer | Sale | 1,444 | $329.03 | $475,119 | Aug 15, 2025 |
| Chen Stephen C. | General Counsel | Gift | 750 | — | — | Aug 15, 2025 |
| Skaruppa Matthew | Chief Financial Officer | Gift | 2,522 | — | — | Aug 14, 2025 |
| Glance Natalie | Chief Engineering Officer | Gift | 2,300 | — | — | Aug 12, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 1,133 | $344.99 | $390,874 | Aug 5, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 1,200 | $365.49 | $438,588 | Jul 21, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 200 | $386.91 | $77,382 | Jul 7, 2025 |
| Glance Natalie | Chief Engineering Officer | Sale | 300 | $410.68 | $123,204 | Jul 1, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | Sale | 1,199 | $471.45 | $565,269 | Jun 20, 2025 |
| Shelton James H | — | Sale | 895 | $476.85 | $426,781 | Jun 13, 2025 |
| Schlosser Mario | — | Award / Grant | 379 | — | — | Jun 11, 2025 |
| Munson Gillian | — | Award / Grant | 379 | — | — | Jun 11, 2025 |
| Clemens Sara | — | Award / Grant | 379 | — | — | Jun 11, 2025 |
| Ross Bonnie | — | Award / Grant | 379 | — | — | Jun 11, 2025 |
| Lilly III John Osborne | — | Award / Grant | 379 | — | — | Jun 11, 2025 |
| Shelton James H | — | Award / Grant | 379 | — | — | Jun 11, 2025 |
| GORDON WILLIAM B | — | Award / Grant | 379 | — | — | Jun 11, 2025 |
| Bohutinsky Amy | — | Award / Grant | 379 | — | — | Jun 11, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | C | 60,000 | — | — | Jun 6, 2025 |
| von Ahn Luis | President & CEO, Co-Founder | C | 5,000 | — | — | Jun 5, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | C | 10,000 | $38.08 | $380,800 | Jun 5, 2025 |
| Hacker Severin | Chief Tech Officer, Co-Founder | C | 10,000 | $38.08 | $380,800 | May 19, 2025 |
| Skaruppa Matthew | Chief Financial Officer | Sale | 900 | $526.16 | $473,544 | May 16, 2025 |
| Glance Natalie | Chief Engineering Officer | Sale | 800 | $526.10 | $420,880 | May 16, 2025 |
| Chen Stephen C. | General Counsel | Sale | 100 | $530.22 | $53,022 | May 16, 2025 |
| Chen Stephen C. | General Counsel | Award / Grant | 5,443 | — | — | May 15, 2025 |