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sellWeak cluster of 510b5-1 plan

Natalie Glance sold $885k of DUOL

Chief Engineering Officer at Duolingo, Inc.. 5,005 shares at an average of $176.88, traded Nov 17, 2025, filed Nov 19, 2025.

Warning score
33
Value
$885k
5,005 shares
Holdings after
111,166
-4% 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
    $885k at market
    +23
  • Share of holdings sold
    Sold 4.3% 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.

This signal so far: 1m +6.6%, 3m -35.5%, 6m -38.8%.

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 12, 2026 · close 147.74
Since filing Nov 19, 2025: -15.3%SPY +18.7% · excess -34.0%

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 0001628280-25-053182, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 17, 2025SOpen-market sale
Class A Common Stock10b5-1
-2,534$177.95$451k113,637Nov 19, 2025
Nov 18, 2025SOpen-market sale
Class A Common Stock10b5-1
-160$173.80$28k113,477Nov 19, 2025
Nov 18, 2025SOpen-market sale
Class A Common Stock10b5-1
-741$174.97$130k112,736Nov 19, 2025
Nov 18, 2025SOpen-market sale
Class A Common Stock10b5-1
-850$175.73$149k111,886Nov 19, 2025
Nov 18, 2025SOpen-market sale
Class A Common Stock10b5-1
-560$177.00$99k111,326Nov 19, 2025
Nov 18, 2025SOpen-market sale
Class A Common Stock10b5-1
-160$177.60$28k111,166Nov 19, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
Pro nowfree Oct 16, 2026
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%
41Moderate
DUOLsell 3
Duolingo, Inc.
Stephen C. Chen
General Counsel
$132k
1,024 shares
-2%
41Moderate
DUOLsell 3
Duolingo, Inc.
Robert Meese
Chief Business Officer
$175k
1,354 shares
-1%
29Weak
DUOLsell 310b5-1
Duolingo, Inc.
Natalie Glance
Chief Engineering Officer
$567k
4,290 shares
-2%
24Weak
DUOLsell 310b5-1
Duolingo, Inc.
Stephen C. Chen
General Counsel
$317k
2,797 shares
-5%

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.

Natalie Glance sold $885k of DUOL | InsiderTell