Updated Jul 16, 2026
Chen Stephen C. has filed 3 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $2.32M.
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-18 | DUOL | Duolingo, Inc. | M — Option exercise | 58 | $14.42 | $836 |
| 2026-05-19 | DUOL | Duolingo, Inc. | S — Open-market sale | 700 | $114.22 | $80K |
| 2026-05-19 | DUOL | Duolingo, Inc. | S — Open-market sale | 1.3K | $113.27 | $145K |
| 2026-05-19 | DUOL | Duolingo, Inc. | S — Open-market sale | 820 | $112.16 | $92K |
| 2026-05-19 | DUOL | Duolingo, Inc. | A — Grant or award | 24.4K | $112.06 | $2.74M |
| 2026-05-13 | DUOL | Duolingo, Inc. | M — Option exercise | 648 | $14.42 | $9K |
| 2026-02-20 | DUOL | Duolingo, Inc. | S — Open-market sale [10b5-1] | 80 | $115.47 | $9K |
| 2026-02-20 | DUOL | Duolingo, Inc. | S — Open-market sale [10b5-1] | 520 | $114.55 | $60K |
| 2026-02-20 | DUOL | Duolingo, Inc. | S — Open-market sale [10b5-1] | 480 | $113.95 | $55K |
| 2026-02-20 | DUOL | Duolingo, Inc. | S — Open-market sale [10b5-1] | 821 | $111.83 | $92K |
| 2026-02-20 | DUOL | Duolingo, Inc. | S — Open-market sale [10b5-1] | 896 | $110.06 | $99K |
| 2025-09-18 | DUOL | Duolingo, Inc. | M — Option exercise | 1.7K | $14.42 | $25K |
| 2025-08-26 | DUOL | Duolingo, Inc. | S — Open-market sale | 1.5K | $321.36 | $487K |
| 2025-08-15 | DUOL | Duolingo, Inc. | G — Bona-fide gift | 750 | $0.00 | |
| 2024-12-20 | DUOL | Duolingo, Inc. | M — Option exercise | 3.7K | $14.42 | $53K |
| 2024-11-20 | DUOL | Duolingo, Inc. | S — Open-market sale [10b5-1] | 200 | $312.19 | $62K |
| 2024-11-20 | DUOL | Duolingo, Inc. | S — Open-market sale [10b5-1] | 400 | $309.87 | $124K |
| 2024-11-20 | DUOL | Duolingo, Inc. | S — Open-market sale [10b5-1] | 1.8K | $307.95 | $544K |
| 2024-11-20 | DUOL | Duolingo, Inc. | S — Open-market sale [10b5-1] | 275 | $307.04 | $84K |
| 2024-11-18 | DUOL | Duolingo, Inc. | S — Open-market sale | 1.2K | $309.30 | $386K |
Chen Stephen C. is a corporate insider — currently tracked as General Counsel of Duolingo, Inc. (DUOL). InsiderAlpha tracks every SEC Form 4 filing in real time.
3 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 14 open-market sales ($2.32M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live Chen Stephen C. profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.