SH
Insider
Severin Hacker
Chief Tech Officer, Co-FounderSeverin Hacker (Chief Tech Officer, Co-Founder) filed 5 Form 4 reports in the trailing twelve months (0 purchases, 5 sales), most often in Duolingo, Inc. (DUOL). The largest single filing was $3.0M of DUOL (9,391 sh across 8 lots, as filed), executed Oct 6 2025.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
–
no purchases on file
Delay-adjustediThe same average, entered at disclosure dates
–
returns measure stock purchases only
Filings, ttm
5
0 buys · 5 sells
Median delay
–
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$10.1M
shares × price, as filed
Last traded
Nov 19 2025
Filed Nov 20 2025
Median ADV $195.9M across their filed names
Open performance→Volume by month
Buys $0
Sells $170.4M
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Technology
4 filings
Sector per market data · by filing · past 12 months
Most traded names
DUOL
Duolingo, Inc.
DUOL · 0 buys · 26 sells
26 filings
Recent filings
DUOLSALE
Duolingo, Inc.
View filing →
$2.8M9,338 sh across 11 lots
Exec Mar 19 2025
Filed Mar 21 2025 · 5:30 PM ET DUOLSALE Duolingo, Inc. View filing → $2.9M
9,900 sh across 8 lots
Exec Mar 5 2025
Filed Mar 6 2025 · 5:30 PM ET DUOLSALE Duolingo, Inc. View filing → $4.3M
10,000 sh across 9 lots
Exec Feb 19 2025
Filed Feb 21 2025 · 5:30 PM ET DUOLSALE Duolingo, Inc. View filing → $3.6M
9,202 sh across 6 lots
Exec Feb 5 2025
Filed Feb 6 2025 · 5:30 PM ET DUOLSALE Duolingo, Inc. View filing → $3.1M
9,400 sh across 11 lots
Exec Jan 21 2025
Filed Jan 23 2025 · 5:30 PM ET DUOLSALE Duolingo, Inc. View filing → $3.2M
9,500 sh across 8 lots
Exec Jan 6 2025
Filed Jan 7 2025 · 5:30 PM ET DUOLSALE Duolingo, Inc. View filing → $3.2M
9,654 sh across 7 lots
Exec Dec 19 2024
Filed Dec 20 2024 · 5:30 PM ET DUOLSALE Duolingo, Inc. View filing → $14.8M
43,826 sh across 10 lots
Exec Dec 13 2024
Filed Dec 16 2024 · 5:30 PM ET More filings →