SEC EDGAR - Form 4 insider activity

Duolingo, Inc. $DUOL

Tracked equity - 1 filings indexed by Nortis

Nortis signal thesis

Buying activity is leading recent insider flow.

OM buys - 90d

OM sells - 90d

Routine filings

Cluster filings

$4.19M

Largest trade

82/100

Avg signal score

Filing tape

Recent filings

Last 30d: 1

Reported BuyHigh signal 82/100

filed 2026-10-09

VLCEO

von Ahn Luis - Director, President & CEO, Co-Founder, 10% Owner - $4.19M

Open-market purchases use the insider's own money, so they are generally more informative than awards or option mechanics.