Duolingo, Inc.
A maker of free, game-like apps that teach dozens of languages — plus math, music, and even chess — through bite-sized lessons, streaks, and rewards. It was founded in 2011 by computer scientist Luis von Ahn and his Ph.D. student Severin Hacker at Carnegie Mellon University, after they noticed millions wanted to learn a language but couldn't afford pricey courses. The name blends the Latin "duo" (two) with "lingo" (language), and its green owl mascot Duo became famous for guilt-tripping users with persistent reminder notifications.
Sold 136.2K
Sold 474.1K
Bought 2.16M · Sold 600.0K
Sold 632.2K
Granted 10.1K · Sold 894.3K
Sold 741.4K
Granted 138.4K · Sold 167.3K
Granted 369.1K · Sold 242.3K
Sold 446.8K
Granted 144.3K · Sold 6.6K
Granted 7.5K
Granted 214.0K · Sold 160.4K
Granted 425.7K · Sold 391.6K
Granted 47.5K · Bought 5.0K · Sold 40.9K
Granted 8.9K
Granted 22.5K · Sold 15.0K
Granted 37.5K · Sold 41.6K
Granted 4.3K
Granted 3.7K
Granted 3.0K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| KPCB DGF Associates, LLC +2 co-filers10% owner · 8 transactions | — | 8.06Mas of Mar 2022 | — | — | 136.2K |
| Alphabet Holdings LLC +7 co-filers10% owner · 31 transactions | — | 4.25Mas of Jul 2022 | — | — | 474.1K |
| Durable Capital Partners LP10% owner · 129 transactions | — | 3.56Mas of Nov 2023 | — | 2.16M | 600.0K |
| von Ahn LuisPresident & CEO, Co-Founder, Director, 10% owner · 175 transactions | — | 3.37M | — | — | 632.2K |
| Hacker SeverinChief Tech Officer, Co-Founder, Director, 10% owner · 562 transactions | — | 3.07M | 10.1K | — | 894.3K |
| Viswanathan Ravi +2 co-filers10% owner · 17 transactions | — | 2.26Mas of Jul 2022 | — | — | — |
| USV Investors 2012 Fund, L.P. +1 co-filer10% owner · 8 transactions | — | 2.03Mas of Nov 2021 | — | — | 741.4K |
| Meese RobertChief Business Officer · 86 transactions | — | 174.3K | 138.4K | — | 167.3K |
| Glance NatalieChief Engineering Officer · 207 transactions | — | 173.5K | 369.1K | — | 242.3K |
| Alphabet Holdings LLC +5 co-filers10% owner · 120 transactions | — | 144.4Kas of Nov 2021 | — | — | 446.8K |
| Munson GillianChief Financial Officer · 10 transactions | — | 137.7K | 144.3K | — | 6.6K |
| Gordon William BDirector · 6 transactions | — | 78.4K | 7.5K | — | — |
| Chen Stephen C.General Counsel · 118 transactions | — | 52.9K | 214.0K | — | 160.4K |
| Skaruppa MatthewChief Financial Officer · 326 transactions | — | 34.0K | 425.7K | — | 391.6K |
| Shelton James HDirector · 23 transactions | — | 11.6K | 47.5K | 5.0K | 40.9K |
| Lilly III John OsborneDirector · 6 transactions | — | 8.9K | 8.9K | — | — |
| Bohutinsky AmyDirector · 18 transactions | — | 7.5K | 22.5K | — | 15.0K |
| Clemens SaraDirector · 22 transactions | — | 6.0K | 37.5K | — | 41.6K |
| Sturdy LaelaDirector · 3 transactions | — | 4.3Kas of Jun 2023 | 4.3K | — | — |
| Schlosser MarioDirector · 2 transactions | — | 4.1K | 3.7K | — | — |
| Ross BonnieDirector · 2 transactions | — | 3.3K | 3.0K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over all recorded history: -2.83M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.