CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

CANADA PENSION PLAN INVESTMENT BOARD's Holding History (CIK: 0001283718)

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

Q4 2025

Shares 26,500 Value ($000) $6,198 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 68,600 Value ($000) $9,993 Avg Close $101.84 Range $76.89 - $146.53

Q2 2025

Shares 4,800 Value ($000) $390 Avg Close $71.73 Range $49.21 - $86.21

Q1 2025

Shares 1,500 Value ($000) $91 Avg Close $79.05 Range $58.04 - $101.44

Q1 2024

Shares 23,600 Value ($000) $1,167 Avg Close $52.75 Range $44.22 - $63.24

Q4 2023

Shares 41,100 Value ($000) $1,850 Avg Close $44.09 Range $39.94 - $48.36

Q3 2023

Shares 19,000 Value ($000) $898 Avg Close $44.08 Range $40.10 - $50.72

Q2 2023

Shares 14,700 Value ($000) $625 Avg Close $45.54 Range $40.84 - $52.67

Q1 2023

Shares 26,800 Value ($000) $1,408 Avg Close $49.92 Range $45.83 - $54.25

Q4 2022

Shares 26,400 Value ($000) $1,346 Avg Close $45.21 Range $38.33 - $52.51

Q3 2022

Shares 70,600 Value ($000) $2,854 Avg Close $48.05 Range $39.44 - $56.38

Q2 2022

Shares 94,600 Value ($000) $4,323 Avg Close $51.84 Range $41.63 - $61.78

Q1 2022

Shares 3,347 Value ($000) $203 Avg Close $65.45 Range $53.29 - $77.38

Q3 2021

Shares 19,100 Value ($000) $981 Avg Close $55.54 Range $50.34 - $58.85

Q4 2020

Shares 140,200 Value ($000) $7,410 Avg Close $44.43 Range $38.03 - $54.05

Q2 2020

Shares 27,451 Value ($000) $1,487 Avg Close $49.71 Range $38.00 - $57.19

Q1 2020

Shares 247,251 Value ($000) $9,844 Avg Close $41.03 Range $30.58 - $44.61

Q4 2019

Shares 283,739 Value ($000) $12,113 Avg Close $38.10 Range $33.22 - $43.97

Q3 2019

Shares 717,494 Value ($000) $28,147 Avg Close $41.92 Range $37.94 - $46.78

Q2 2019

Shares 993,331 Value ($000) $40,856 Avg Close $38.48 Range $32.76 - $46.23

Q1 2019

Shares 1,140,532 Value ($000) $42,587 Avg Close $38.83 Range $32.85 - $45.70

Q4 2018

Shares 1,599,900 Value ($000) $54,248 Avg Close $31.69 Range $28.23 - $36.55

Q3 2018

Shares 813,300 Value ($000) $25,407 Avg Close $28.02 Range $25.19 - $32.33

Q2 2018

Shares 873,900 Value ($000) $23,167 Avg Close $25.40 Range $22.99 - $27.10

Q1 2018

Shares 603,400 Value ($000) $15,628 Avg Close $23.53 Range $20.71 - $27.73

Q4 2017

Shares 546,300 Value ($000) $11,434 Avg Close $21.20 Range $19.40 - $22.63

Q3 2017

Shares 507,900 Value ($000) $11,159 Avg Close $23.93 Range $20.86 - $26.92

Q2 2017

Shares 527,700 Value ($000) $13,203 Avg Close $23.96 Range $21.43 - $27.98

Q1 2017

Shares 566,700 Value ($000) $13,380 Avg Close $24.52 Range $22.73 - $26.84

Q4 2016

Shares 561,200 Value ($000) $13,699 Avg Close $21.85 Range $18.94 - $25.19

Q3 2016

Shares 559,700 Value ($000) $12,201 Avg Close $20.85 Range $17.59 - $23.60

Q2 2016

Shares 1,153,500 Value ($000) $21,628 Avg Close $18.11 Range $15.62 - $21.87

Q1 2016

Shares 942,300 Value ($000) $17,923 Avg Close $18.47 Range $16.32 - $21.14

Q4 2015

Shares 813,400 Value ($000) $16,829 Avg Close $22.97 Range $18.98 - $25.46

Q3 2015

Shares 402,800 Value ($000) $8,346 Avg Close $23.24 Range $17.97 - $26.50

Q2 2015

Shares 177,600 Value ($000) $4,206 Avg Close $22.84 Range $18.75 - $26.20

Q1 2015

Shares 69,900 Value ($000) $1,350 Avg Close $19.93 Range $17.86 - $21.47

Q4 2014

Shares 29,700 Value ($000) $576 Avg Close $16.70 Range $13.77 - $20.14

Q2 2014

Shares 57,300 Value ($000) $1,241 Avg Close $20.54 Range $18.00 - $24.21

Q1 2014

Shares 251,300 Value ($000) $5,715 Avg Close $23.52 Range $21.41 - $27.16

Q4 2013

Shares 154,500 Value ($000) $3,697 Avg Close $23.81 Range $20.93 - $27.94

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	26,500	$6,198	$194.00	$143.19 - $248.00
Q3 2025	68,600	$9,993	$101.84	$76.89 - $146.53
Q2 2025	4,800	$390	$71.73	$49.21 - $86.21
Q1 2025	1,500	$91	$79.05	$58.04 - $101.44
Q1 2024	23,600	$1,167	$52.75	$44.22 - $63.24
Q4 2023	41,100	$1,850	$44.09	$39.94 - $48.36
Q3 2023	19,000	$898	$44.08	$40.10 - $50.72
Q2 2023	14,700	$625	$45.54	$40.84 - $52.67
Q1 2023	26,800	$1,408	$49.92	$45.83 - $54.25
Q4 2022	26,400	$1,346	$45.21	$38.33 - $52.51
Q3 2022	70,600	$2,854	$48.05	$39.44 - $56.38
Q2 2022	94,600	$4,323	$51.84	$41.63 - $61.78
Q1 2022	3,347	$203	$65.45	$53.29 - $77.38
Q3 2021	19,100	$981	$55.54	$50.34 - $58.85
Q4 2020	140,200	$7,410	$44.43	$38.03 - $54.05
Q2 2020	27,451	$1,487	$49.71	$38.00 - $57.19
Q1 2020	247,251	$9,844	$41.03	$30.58 - $44.61
Q4 2019	283,739	$12,113	$38.10	$33.22 - $43.97
Q3 2019	717,494	$28,147	$41.92	$37.94 - $46.78
Q2 2019	993,331	$40,856	$38.48	$32.76 - $46.23
Q1 2019	1,140,532	$42,587	$38.83	$32.85 - $45.70
Q4 2018	1,599,900	$54,248	$31.69	$28.23 - $36.55
Q3 2018	813,300	$25,407	$28.02	$25.19 - $32.33
Q2 2018	873,900	$23,167	$25.40	$22.99 - $27.10
Q1 2018	603,400	$15,628	$23.53	$20.71 - $27.73
Q4 2017	546,300	$11,434	$21.20	$19.40 - $22.63
Q3 2017	507,900	$11,159	$23.93	$20.86 - $26.92
Q2 2017	527,700	$13,203	$23.96	$21.43 - $27.98
Q1 2017	566,700	$13,380	$24.52	$22.73 - $26.84
Q4 2016	561,200	$13,699	$21.85	$18.94 - $25.19
Q3 2016	559,700	$12,201	$20.85	$17.59 - $23.60
Q2 2016	1,153,500	$21,628	$18.11	$15.62 - $21.87
Q1 2016	942,300	$17,923	$18.47	$16.32 - $21.14
Q4 2015	813,400	$16,829	$22.97	$18.98 - $25.46
Q3 2015	402,800	$8,346	$23.24	$17.97 - $26.50
Q2 2015	177,600	$4,206	$22.84	$18.75 - $26.20
Q1 2015	69,900	$1,350	$19.93	$17.86 - $21.47
Q4 2014	29,700	$576	$16.70	$13.77 - $20.14
Q2 2014	57,300	$1,241	$20.54	$18.00 - $24.21
Q1 2014	251,300	$5,715	$23.52	$21.41 - $27.16
Q4 2013	154,500	$3,697	$23.81	$20.93 - $27.94