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sellNotable cluster of 10

Thomas Michael Nevens sold $1.3M of CIEN

director at CIENA CORP. 3,738 shares at an average of $359.04, traded Sep 23, 2026, filed Sep 25, 2026.

Warning score
65
Value
$1.3M
3,738 shares
Holdings after
6,289
-37% from before
From 52-week low
+159%
low $137.17, close $355.91
From 52-week high
-43%
high $627.00, as of Sep 23, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $1.3M at market
    +25
  • Share of holdings sold
    Sold 37% of holdings
    +10
  • Cluster
    10 insiders selling within 14 days
    +15

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.

CIENOct 9, 2026 · close 449.77
Since filing Sep 25, 2026: +26.0%SPY +0.9% · excess +25.1%

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 0001251445-26-000004, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 23, 2026SOpen-market sale
Common Stock
-3,738$359.04$1.3M6,28917 d ago
Sep 24, 2026GGift
Common Stock
-2,797--3,49217 d ago

Related signals

Other insiders at CIENA CORP and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
34Weak
CIENsell 610b5-1
CIENA CORP
Jason Phipps
EVP & Chief Customer Officer
$934k
2,629 shares
-4%
31Weak
CIENsell 610b5-1
CIENA CORP
Sheela Kosaraju
EVP & Chief Legal Officer
$746k
2,101 shares
-2%
23Weak
CIENsell 610b5-1
CIENA CORP
Marc D. Graff
EVP & Chief Financial Officer
$34k
97 shares
-0%
29Weak
CIENsell 1010b5-1
CIENA CORP
Joseph Cumello
EVP & General Mgr.
$569k
1,586 shares
-4%
65Notable
CIENsell 10
CIENA CORP
Bruce L. Claflin
director
$1.0M
2,857 shares
-26%
45Moderate
CIENsell 710b5-1
CIENA CORP
Gary B Smith
President & CEO
$975k
2,952 shares
-1%
33Weak
CIENsell 710b5-1
CIENA CORP
David M Rothenstein
EVP & Chief Strategy Officer
$826k
2,500 shares
-1%
21Weak
CIENsell 710b5-1
CIENA CORP
Dino DiPerna
EVP & Chief R&D Officer
$168k
498 shares
-1%
26Weak
CIENsell 710b5-1
CIENA CORP
Brodie Gage
EVP & Chief Product &
$390k
1,200 shares
-3%
45Moderate
CIENsell 410b5-1
CIENA CORP
Gary B Smith
President, CEO
$1.1M
2,952 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.

Thomas Michael Nevens sold $1.3M of CIEN | InsiderTell