Skip to content
sellWeak cluster of 510b5-1 plan

Stephen C. Chen sold $1.4M of DUOL

General Counsel at Duolingo, Inc.. 2,635 shares at an average of $526.94, traded May 16, 2025, filed May 19, 2025.

Warning score
35
Value
$1.4M
2,635 shares
Holdings after
36,185
-7% from before
From 52-week low
+137%
low $223.18, close $529.05
From 52-week high
-2%
high $540.68, as of May 16, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $1.4M at market
    +25
  • Share of holdings sold
    Sold 6.8% 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 May 19, 2025: -71.2%SPY +33.1% · excess -104.2%

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 0001562088-25-000114, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 16, 2025SOpen-market sale
Class A Common Stock10b5-1
-1,268$525.07$666k37,552May 19, 2025
May 16, 2025SOpen-market sale
Class A Common Stock10b5-1
-300$526.44$158k37,252May 19, 2025
May 16, 2025SOpen-market sale
Class A Common Stock10b5-1
-300$527.61$158k36,952May 19, 2025
May 16, 2025SOpen-market sale
Class A Common Stock10b5-1
-467$529.25$247k36,485May 19, 2025
May 16, 2025SOpen-market sale
Class A Common Stock10b5-1
-100$530.22$53k36,385May 19, 2025
May 16, 2025SOpen-market sale
Class A Common Stock10b5-1
-200$531.44$106k36,185May 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%
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%

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 $1.4M of DUOL | InsiderTell