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sellModerate cluster of 310b5-1 plan

Stephen C. Chen sold $1.2M of DUOL

General Counsel at Duolingo, Inc.. 8,072 shares at an average of $149.33, traded Sep 14, 2026, filed Sep 15, 2026.

Warning score
40
Value
$1.2M
8,072 shares
Holdings after
43,769
-16% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    Officer
    +15
  • Trade size
    $1.2M at market
    +25
  • Share of holdings sold
    Sold 16% of holdings
    +5
  • Cluster
    3 insiders selling within 14 days
    +15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

DUOLOct 9, 2026 · close 149.92
Since filing Sep 15, 2026: -2.6%SPY +3.1% · excess -5.7%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001628280-26-062115, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 14, 2026SOpen-market sale
Class A Common Stock10b5-1
-2,107$147.43$311k49,73427 d ago
Sep 14, 2026SOpen-market sale
Class A Common Stock10b5-1
-5,965$150.00$895k43,76927 d ago

Related signals

Other insiders at Duolingo, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
35Weak
DUOLsell10b5-1
Duolingo, Inc.
Luis von Ahn
President & CEO, Co-Founder
$17M
110,046 shares
-100%
43Moderate
DUOLsell 210b5-1
Duolingo, Inc.
Luis von Ahn
President & CEO, Co-Founder
$7.0M
46,682 shares
-100%
50Moderate
DUOLsell 310b5-1
Duolingo, Inc.
Luis von Ahn
President & CEO, Co-Founder
$6.2M
40,980 shares
-110%
50Moderate
DUOLsell 310b5-1
Duolingo, Inc.
Luis von Ahn
President & CEO, Co-Founder
$4.3M
28,292 shares
-100%
40Moderate
DUOLsell 310b5-1
Duolingo, Inc.
William B Gordon
director
$1.5M
10,000 shares
-13%
25Weak
DUOLsell10b5-1
Duolingo, Inc.
Severin Hacker
Chief Tech Officer, Co-Founder
$2.9M
10,000 shares
-99%
40Moderate
DUOLsell 310b5-1
Duolingo, Inc.
Severin Hacker
Chief Tech Officer, Co-Founder
$2.7M
10,000 shares
-99%
28Weak
DUOLsell 510b5-1
Duolingo, Inc.
Stephen C. Chen
General Counsel
$487k
1,515 shares
-4%
32Weak
DUOLsell 510b5-1
Duolingo, Inc.
Matthew Skaruppa
Chief Financial Officer
$3.5M
10,937 shares
-20%
40Moderate
DUOLsell 510b5-1
Duolingo, Inc.
Severin Hacker
Chief Tech Officer, Co-Founder
$3.4M
10,000 shares
-99%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Stephen C. Chen sold $1.2M of DUOL | InsiderTell