Hacker Severin — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

Hacker Severin has filed 1 SEC Form 4 filing across 1 company in the last 90 days — selling. Lifetime open-market sales: $105.57M.

Profile

Hacker Severin

Severin Hacker is the co-founder and Chief Technology Officer of Duolingo, Inc., a leading mobile learning platform for language education. He has played a crucial role in developing the company's technology and product offerings, contributing to its status as a top-grossing app in the Education category.

RoleChief Tech Officer, Co-Founder, Director, 10% Owner
Notability50/100
LinksWikipedia

Board memberships

Awards & honors

Recent Transactions

DateTickerCompanyCodeSharesPriceValue
2025-10-06DUOLDuolingo, Inc.S — Open-market sale200$328.75$66K
2025-10-06DUOLDuolingo, Inc.S — Open-market sale1.3K$327.44$426K
2025-10-06DUOLDuolingo, Inc.S — Open-market sale600$326.50$196K
2025-10-06DUOLDuolingo, Inc.S — Open-market sale500$325.22$163K
2025-10-06DUOLDuolingo, Inc.S — Open-market sale300$324.10$97K
2025-10-06DUOLDuolingo, Inc.S — Open-market sale109$322.62$35K
2025-10-06DUOLDuolingo, Inc.S — Open-market sale1.2K$321.39$377K
2025-10-06DUOLDuolingo, Inc.S — Open-market sale1.8K$320.33$578K
2025-10-06DUOLDuolingo, Inc.S — Open-market sale1.6K$319.56$511K
2025-10-06DUOLDuolingo, Inc.S — Open-market sale1.9K$318.26$610K
2025-10-06DUOLDuolingo, Inc.S — Open-market sale500$317.31$159K
2025-10-06DUOLDuolingo, Inc.J — Other acquisition / disposition10.0K$38.08$381K
2025-09-19DUOLDuolingo, Inc.S — Open-market sale2.2K$290.78$640K
2025-09-19DUOLDuolingo, Inc.S — Open-market sale1.9K$289.79$551K
2025-09-19DUOLDuolingo, Inc.S — Open-market sale2.3K$288.81$664K
2025-09-19DUOLDuolingo, Inc.S — Open-market sale2.3K$287.81$662K
2025-09-19DUOLDuolingo, Inc.S — Open-market sale1.3K$286.77$373K
2025-09-19DUOLDuolingo, Inc.J — Other acquisition / disposition10.0K$38.08$381K
2025-09-05DUOLDuolingo, Inc.S — Open-market sale200$271.57$54K
2025-09-05DUOLDuolingo, Inc.S — Open-market sale1.6K$271.05$446K

Companies — Last 90 Days

Frequently Asked Questions

Who is Hacker Severin?

Severin Hacker is the co-founder and Chief Technology Officer of Duolingo, Inc., a leading mobile learning platform for language education. He has played a crucial role in developing the company's technology and product offerings, contributing to its status as a top-grossing app in the Education category.…

How many SEC Form 4 filings has Hacker Severin submitted recently?

1 primary Form 4 filings in the last 90 days, covering 1 company.

Has Hacker Severin been buying or selling stock?

Recorded transactions: 0 open-market purchases () and 119 open-market sales ($105.57M) across all tracked filings.

Where can I see all of Hacker Severin's SEC 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.

Learn More

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