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sellWeak cluster of 310b5-1 plan

Thomas Dean Fountain sold $294k of FFIV

EVP Global Services & Strategy at F5, INC.. 1,110 shares at an average of $264.76, traded Dec 15, 2025, filed Dec 17, 2025.

Warning score
24
Value
$294k
1,110 shares
Holdings after
16,943
-6% from before
From 52-week low
+17%
low $223.99, close $263.01
From 52-week high
-23%
high $343.17, as of Dec 15, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $294k at market
    +14
  • Share of holdings sold
    Sold 6.1% 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.

FFIVOct 9, 2026 · close 479.83
Since filing Dec 17, 2025: +87.4%SPY +17.2% · excess +70.2%

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 0001728330-25-000020, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 15, 2025SOpen-market sale
Common Stock10b5-1
-1,110$264.76$294k16,943Dec 17, 2025

Related signals

Other insiders at F5, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
48Moderate
FFIVsell 210b5-1
F5, INC.
Michael F Montoya
Chief Technology Ops Officer
$1.8M
4,426 shares
-77%
17Weak
FFIVsell 210b5-1
F5, INC.
John Anthony Maddison
Chief Product Mkting Officer
$83k
204 shares
-15%
9Weak
FFIVsell10b5-1
F5, INC.
Thomas Dean Fountain
EVP Global Services & Strategy
$289k
1,100 shares
-7%
9Weak
FFIVsell10b5-1
F5, INC.
Thomas Dean Fountain
EVP Global Services & Strategy
$286k
1,110 shares
-7%
24Weak
FFIVsell 310b5-1
F5, INC.
Thomas Dean Fountain
EVP Global Services & Strategy
$276k
1,110 shares
-6%
49Moderate
FFIVsell 3
F5, INC.
Alan Higginson
director
$310k
1,309 shares
-13%
34Weak
FFIVsell 310b5-1
F5, INC.
Francois Locoh-Donou
President, CEO & Director
$308k
1,300 shares
-1%
23Weak
FFIVsell 310b5-1
F5, INC.
Thomas Dean Fountain
EVP Global Services & Strategy
$263k
1,110 shares
-5%
23Weak
FFIVsell 310b5-1
F5, INC.
Thomas Dean Fountain
EVP Global Services & Strategy
$261k
1,110 shares
-5%
23Weak
FFIVsell 310b5-1
F5, INC.
Thomas Dean Fountain
EVP Global Services & Strategy
$252k
1,110 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.

Thomas Dean Fountain sold $294k of FFIV | InsiderTell