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sellWeak cluster of 210b5-1 plan

Cory Sindelar sold $600k of CALX

Chief Financial Officer at CALIX, INC. 10,000 shares at an average of $60.00, traded Aug 28, 2025, filed Aug 29, 2025.

Warning score
19
Value
$600k
10,000 shares
Holdings after
76,555
-12% from before
From 52-week low
+110%
low $29.03, close $61.06
From 52-week high
0%
high $61.06, as of Aug 28, 2025

Score components

  • Role
    CFO
    +22
  • Trade size
    $600k at market
    +19
  • Share of holdings sold
    Sold 12% of holdings
    +5
  • Cluster
    2 insiders selling within 14 days
    +8
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -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.

CALXOct 9, 2026 · close 37.24
Since filing Aug 29, 2025: -37.4%SPY +22.3% · excess -59.7%

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 0001226868-25-000007, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 28, 2025MOption exercise
Common Stock10b5-1
+10,000$5.05$51k86,555Aug 29, 2025
Aug 28, 2025SOpen-market sale
Common Stock10b5-1
-10,000$60.00$600k76,555Aug 29, 2025
Aug 28, 2025MOption exercise
Stock Option (right to buy)derivative10b5-1
-10,000$0.00$0245,000Aug 29, 2025

Related signals

Other insiders at CALIX, INC and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
43Moderate
CALXsell 210b5-1
CALIX, INC
Michael Weening
President & CEO
$11M
176,000 shares
-106%
43Moderate
CALXsell 210b5-1
CALIX, INC
Michael Weening
President & CEO
$1.4M
24,000 shares
-60%
43Moderate
CALXsell 210b5-1
CALIX, INC
Michael Weening
President & CEO
$7.6M
126,000 shares
-89%
50Moderate
CALXsell 310b5-1
CALIX, INC
Michael Weening
President & CEO
$4.2M
74,000 shares
-82%
35Weak
CALXsell 310b5-1
CALIX, INC
Carl Russo
director, owner
$1.4M
25,000 shares
-1%
26Weak
CALXsell 310b5-1
CALIX, INC
Cory Sindelar
Chief Financial Officer
$560k
10,000 shares
-12%
50Moderate
CALXsell 310b5-1
CALIX, INC
Michael Weening
President & CEO
$11M
200,000 shares
-186%
10Weak
CALXsell10b5-1
CALIX, INC
Cory Sindelar
Chief Financial Officer
$520k
10,000 shares
-12%
35Weak
CALXsell10b5-1
CALIX, INC
Michael Weening
President & CEO
$4.7M
100,000 shares
-86%
20Weak
CALXsell10b5-1
CALIX, INC
Carl Russo
director, owner
$990k
25,000 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.

Cory Sindelar sold $600k of CALX | InsiderTell