Transaction · 0001444157-26-000022

Rothenstein David M

Rothenstein David M, SVP, CSO, reported an open-market or private sale at CIENA CORP involving 2500.000000 shares for an estimated $1095250.00. Reported holdings after the transaction were 180231.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SSVP, CSO
CIENCIENA CORP
Filing timeAug 18
Trade dateAug 14, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$405.54
Pre-filing
1mo ago +3.2%1w ago +1.7%1d ago +9.2%
Returns since
7d -5.6%30d -11.1%90d -11.1%180d -11.1%1y -11.1%

CIEN price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
CIEN since 2026-08-18Filed 17 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001444157-26-000022
Common Stock
Transaction date
Aug 14, 2026
Filed Aug 18, 2026, 09:03 PM · 4d delay
Shares
2.50k sh
$43.8k per share
Estimated value
-$109M
Computed from shares × price
Holdings after
180k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership Large Sale 10b5-1 Detected
-4score
Filing-only score

-4

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

SVP and Chief Strategy Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    Sales were affected pursuant to Rule 10b5-1 trading plan dated 10/10/2025.

  2. F2

    Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).

Original filing · 0001444157-26-000022
Related transactions

0 other filings

Same reporting owner
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CIEN