Form4insider filings, from the source

Insider · CIK 0001869758

Stephen C. Chen

Files at: DUOL. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $1.3M · 2net −$1.3M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesAug 16Aug 21Aug 26Aug 31Sep 5Sep 10Sep 15

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Sep 14, 2026 SForm 4 →Sep 15, 6:51 pm EDTDuolingo, Inc.DUOL8,072$149.33$1,205,38543,769−15.6%10b5-1
Aug 17, 2026 SForm 4 →Aug 19, 5:16 pm EDTDuolingo, Inc.DUOL1,024$129.13$132,22951,841−1.94%
Jun 17, 2026 MForm 4 →Jun 18, 5:05 pm EDTDuolingo, Inc.DUOL58$14.42$83652,865—

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Jun 17, 2026 MForm 4 →Jun 18, 5:05 pm EDTDuolingo, Inc.DUOL58——0—