CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

Weiss Asset Management LP's Holding History (CIK: 0001357550)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 17,740 Value ($000) $4,149 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 24,403 Value ($000) $3,555 Avg Close $101.84 Range $76.89 - $146.53

Q2 2025

Shares 39,759 Value ($000) $3,234 Avg Close $71.73 Range $49.21 - $86.21

Q1 2025

Shares 37,890 Value ($000) $2,290 Avg Close $79.05 Range $58.04 - $101.44

Q2 2024

Shares 43,157 Value ($000) $2,079 Avg Close $47.46 Range $43.30 - $53.58

Q1 2024

Shares 236,458 Value ($000) $11,693 Avg Close $52.75 Range $44.22 - $63.24

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	17,740	$4,149	$194.00	$143.19 - $248.00
Q3 2025	24,403	$3,555	$101.84	$76.89 - $146.53
Q2 2025	39,759	$3,234	$71.73	$49.21 - $86.21
Q1 2025	37,890	$2,290	$79.05	$58.04 - $101.44
Q2 2024	43,157	$2,079	$47.46	$43.30 - $53.58
Q1 2024	236,458	$11,693	$52.75	$44.22 - $63.24