CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

1832 Asset Management L.P.'s Holding History (CIK: 0000944388)

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

Q4 2025

Shares 789,900 Value ($000) $184,734 Avg Close $194.00 Range $143.19 - $248.00

Q3 2020

Shares 578,586 Value ($000) $23,050 Avg Close $52.62 Range $38.20 - $61.52

Q2 2017

Shares 120,800 Value ($000) $3,026 Avg Close $23.96 Range $21.43 - $27.98

Q3 2014

Shares 28 Value ($000) $0 Avg Close $19.60 Range $16.66 - $22.46

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	789,900	$184,734	$194.00	$143.19 - $248.00
Q3 2020	578,586	$23,050	$52.62	$38.20 - $61.52
Q2 2017	120,800	$3,026	$23.96	$21.43 - $27.98
Q3 2014	28	$0	$19.60	$16.66 - $22.46