CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q4 2025

Shares 607,391 Value ($000) $142,051 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 161,622 Value ($000) $23,543 Avg Close $101.84 Range $76.89 - $146.53

Q1 2021

Shares 11,140 Value ($000) $610 Avg Close $53.81 Range $47.52 - $57.57

Q4 2020

Shares 25,582 Value ($000) $1,352 Avg Close $44.43 Range $38.03 - $54.05

Q3 2020

Shares 32,175 Value ($000) $1,277 Avg Close $52.62 Range $38.20 - $61.52

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	607,391	$142,051	$194.00	$143.19 - $248.00
Q3 2025	161,622	$23,543	$101.84	$76.89 - $146.53
Q1 2021	11,140	$610	$53.81	$47.52 - $57.57
Q4 2020	25,582	$1,352	$44.43	$38.03 - $54.05
Q3 2020	32,175	$1,277	$52.62	$38.20 - $61.52