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sellWeak cluster of 310b5-1 plan

Natalie Glance sold $567k of DUOL

Chief Engineering Officer at Duolingo, Inc.. 4,290 shares at an average of $132.24, traded Aug 17, 2026, filed Aug 19, 2026.

Warning score
29
Value
$567k
4,290 shares
Holdings after
169,111
-2% from before
From 52-week low
+45%
low $90.03, close $130.16
From 52-week high
-65%
high $369.19, as of Aug 17, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $567k at market
    +19
  • Share of holdings sold
    Sold 2.5% of holdings
    0
  • 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 12, 2026 · close 147.74
Since filing Aug 19, 2026: +1.2%SPY +1.4% · excess -0.2%

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 0001628280-26-058021, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 17, 2026SOpen-market sale
Class A Common Stock10b5-1
-2,751$129.13$355k170,650Aug 19, 2026
Aug 18, 2026SOpen-market sale
Class A Common Stock10b5-1
-502$137.01$69k170,148Aug 19, 2026
Aug 18, 2026SOpen-market sale
Class A Common Stock10b5-1
-1,037$138.19$143k169,111Aug 19, 2026

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%
24Weak
DUOLsell 310b5-1
Duolingo, Inc.
Stephen C. Chen
General Counsel
$317k
2,797 shares
-5%
41Moderate
DUOLsell 3
Duolingo, Inc.
Robert Meese
Chief Business Officer
$159k
1,420 shares
-1%

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 $567k of DUOL | InsiderTell