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sellWeak cluster of 410b5-1 plan

Mark B Templeton sold $986k of ANET

director at Arista Networks, Inc.. 5,000 shares at an average of $197.16, traded Sep 8, 2026, filed Sep 10, 2026.

Warning score
35
Value
$986k
5,000 shares
Holdings after
53,410
-9% from before
From 52-week low
+68%
low $116.13, close $194.96
From 52-week high
-7%
high $210.50, as of Sep 8, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $986k at market
    +25
  • Share of holdings sold
    Sold 8.6% of holdings
    0
  • Cluster
    4 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.

ANETOct 9, 2026 · close 216.74
Since filing Sep 10, 2026: +14.7%SPY +3.0% · excess +11.7%

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 0001596532-26-000226, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 8, 2026SOpen-market sale
Common Stock10b5-1
-1,300$195.27$254k57,11032 d ago
Sep 8, 2026SOpen-market sale
Common Stock10b5-1
-700$196.20$137k56,41032 d ago
Sep 8, 2026SOpen-market sale
Common Stock10b5-1
-1,000$197.46$197k55,41032 d ago
Sep 8, 2026SOpen-market sale
Common Stock10b5-1
-1,700$198.44$337k53,71032 d ago
Sep 8, 2026SOpen-market sale
Common Stock10b5-1
-300$199.32$60k53,41032 d ago

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
45Moderate
ANETsell 310b5-1
Arista Networks, Inc.
Jayshree Ullal
CEO and Chairperson
$21M
96,992 shares
-2%
30Weak
ANETsell 310b5-1
Arista Networks, Inc.
Chantelle Yvette Breithaupt
Senior Vice President, CFO
$263k
1,224 shares
-2%
45Moderate
ANETsell 310b5-1
Arista Networks, Inc.
Jayshree Ullal
CEO and Chairperson
$98M
460,374 shares
-9%
35Weak
ANETsell 510b5-1
Arista Networks, Inc.
Mark B Templeton
director
$1.0M
5,000 shares
-9%
45Moderate
ANETsell 510b5-1
Arista Networks, Inc.
Jayshree Ullal
CEO and Chairperson
$13M
62,622 shares
-1%
45Moderate
ANETsell 410b5-1
Arista Networks, Inc.
Kenneth Duda
President and CTO
$8.8M
43,333 shares
-143%
32Weak
ANETsell 410b5-1
Arista Networks, Inc.
Andreas Bechtolsheim
owner
$60M
300,000 shares
-0%
20Weak
ANETsell 210b5-1
Arista Networks, Inc.
Chantelle Yvette Breithaupt
Senior Vice President, CFO
$120k
612 shares
-1%
30Weak
ANETsell10b5-1
Arista Networks, Inc.
Kenneth Duda
President and CTO
$6.9M
56,000 shares
-130%
40Moderate
ANETsell 410b5-1
Arista Networks, Inc.
Charles H Giancarlo
director
$1.0M
8,000 shares
-24%

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.