WhaleWave
Ownership research
Company ownership
CIEN · SEC CIK 0000936395
Broad multi-source activity
Analysis window: last 120 days.
3 of 4 source families recorded activity between Jun 24, 2026 and Oct 15, 2026.
Activity
3 of 4
Filing types detected
Recent events
41
Jun 24 – Oct 15
Insider purchases
$0
Most recently reported quarter
Increased · 1,052,165 shares
7.68%
Reduced · 12,718,494 shares
-4.90%
Reduced · 101,038 shares
-29.76%
Reduced · 656,554 shares
-76.13%
No reported events
Confirmed sales
$10.5M
18 matched events
Increased · 1,755,602 shares
1.79%
Factual events across SEC sources
Oct 15
Proposed insider sale
Gary B. Smith · 14,760 shares · $5.26M
Form 144
Oct 15
Proposed insider sale
DAVID ROTHENSTEIN · 2,500 shares · $899K
Form 144
Oct 15
Proposed insider sale
DINO DIPERNA · 890 shares · $308.87K
Form 144