CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

BROWN BROTHERS HARRIMAN & CO's Holding History (CIK: 0000014661)

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

Q1 2023

Shares 71 Value ($000) $4 Avg Close $49.92 Range $45.83 - $54.25

Q3 2022

Shares 753 Value ($000) $30 Avg Close $48.05 Range $39.44 - $56.38

Q3 2020

Shares 1 Value ($000) $0 Avg Close $52.62 Range $38.20 - $61.52

Q2 2020

Shares 1 Value ($000) $0 Avg Close $49.71 Range $38.00 - $57.19

Q2 2013

Shares 11,650 Value ($000) $226 Avg Close $16.65 Range $14.14 - $20.60

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2023	71	$4	$49.92	$45.83 - $54.25
Q3 2022	753	$30	$48.05	$39.44 - $56.38
Q3 2020	1	$0	$52.62	$38.20 - $61.52
Q2 2020	1	$0	$49.71	$38.00 - $57.19
Q2 2013	11,650	$226	$16.65	$14.14 - $20.60