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sellWeak cluster of 510b5-1 plan

Stephen C. Chen sold $494k of DUOL

General Counsel at Duolingo, Inc.. 2,796 shares at an average of $176.82, traded Nov 17, 2025, filed Nov 19, 2025.

Warning score
28
Value
$494k
2,796 shares
Holdings after
31,542
-8% from before
From 52-week low
0%
low $178.27, close $178.27
From 52-week high
-67%
high $540.68, as of Nov 17, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $494k at market
    +18
  • Share of holdings sold
    Sold 8.1% of holdings
    0
  • Cluster
    5 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 Nov 19, 2025: -14.1%SPY +18.8% · excess -32.8%

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 0001628280-25-053186, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 17, 2025SOpen-market sale
Class A Common Stock10b5-1
-1,282$177.95$228k33,056Nov 19, 2025
Nov 18, 2025SOpen-market sale
Class A Common Stock10b5-1
-120$173.97$21k32,936Nov 19, 2025
Nov 18, 2025SOpen-market sale
Class A Common Stock10b5-1
-594$175.15$104k32,342Nov 19, 2025
Nov 18, 2025SOpen-market sale
Class A Common Stock10b5-1
-320$175.94$56k32,022Nov 19, 2025
Nov 18, 2025SOpen-market sale
Class A Common Stock10b5-1
-480$177.19$85k31,542Nov 19, 2025

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.
Stephen C. Chen
General Counsel
$1.2M
8,072 shares
-16%
40Moderate
DUOLsell 310b5-1
Duolingo, Inc.
William B Gordon
director
$1.5M
10,000 shares
-13%
61Notable
DUOLbuy
Duolingo, Inc.
James H Shelton
director
$499k
5,000 shares
+108%
24Weak
DUOLsell 410b5-1
Duolingo, Inc.
Stephen C. Chen
General Counsel
$314k
2,797 shares
-8%
29Weak
DUOLsell 410b5-1
Duolingo, Inc.
Natalie Glance
Chief Engineering Officer
$594k
5,286 shares
-4%
42Moderate
DUOLsell 410b5-1
Duolingo, Inc.
Matthew Skaruppa
Chief Financial Officer
$658k
5,856 shares
-16%

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 $494k of DUOL | InsiderTell