Updated Jul 16, 2026 · Last SEC filing 2026-07-14
Duolingo, Inc. (DUOL) has filed 19 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-14. 2 Form 8-K material event filings were reported by DUOL in the last 90 days. 5 Form 144 notices of proposed sale were filed for DUOL stock. InsiderAlpha tracks every DUOL SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Services-Prepackaged Software (SIC 7372) |
|---|---|
| SEC CIK | 0001562088 |
| Form 4 filings (90d) | 19 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 5 |
| Latest Form 4 filing | 2026-07-14 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Lilly III John Osborne | Director | A — Grant or award | 118 | $124.76 | $15K | SEC | |
| Schlosser Mario | Director | A — Grant or award | 140 | $124.76 | $17K | SEC | |
| Shelton James H | Director | A — Grant or award | 120 | $124.76 | $15K | SEC | |
| Bohutinsky Amy | Director | A — Grant or award | 130 | $124.76 | $16K | SEC | |
| Chen Stephen C. | General Counsel | M — Option exercise | 58 | $14.42 | $836 | SEC | |
| Ross Bonnie | Director | A — Grant or award | 2.0K | $0.00 | — | SEC | |
| Lilly III John Osborne | Director | A — Grant or award | 2.0K | $0.00 | — | SEC | |
| Clemens Sara | Director | A — Grant or award | 2.0K | $0.00 | — | SEC | |
| GORDON WILLIAM B | Director | A — Grant or award | 2.0K | $0.00 | — | SEC | |
| Bohutinsky Amy | Director | A — Grant or award | 2.0K | $0.00 | — | SEC | |
| Schlosser Mario | Director | A — Grant or award | 2.0K | $0.00 | — | SEC | |
| Shelton James H | Director | A — Grant or award | 2.0K | $0.00 | — | SEC | |
| Chen Stephen C. | General Counsel | S — Open-market sale | 1.3K | $113.27 | $145K | SEC | |
| Chen Stephen C. | General Counsel | S — Open-market sale | 700 | $114.22 | $80K | SEC | |
| Glance Natalie | Chief Engineering Officer | S — Open-market sale | 2.1K | $113.21 | $233K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Duolingo, Inc. (DUOL). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Chen Stephen C. | 8 | $3.06M |
| von Ahn Luis | 6 | $5.92M |
| Glance Natalie | 4 | $4.97M |
| Hacker Severin | 3 | $3.44M |
| Meese Robert | 2 | $2.35M |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in DUOL insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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