CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

LOOMIS SAYLES & CO L P's Holding History (CIK: 0000312348)

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

Q4 2025

Shares 145,982 Value ($000) $34,141 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 311,353 Value ($000) $45,355 Avg Close $101.84 Range $76.89 - $146.53

Q2 2025

Shares 357,448 Value ($000) $29,071 Avg Close $71.73 Range $49.21 - $86.21

Q1 2025

Shares 420,901 Value ($000) $25 Avg Close $79.05 Range $58.04 - $101.44

Q4 2024

Shares 430,510 Value ($000) $37 Avg Close $71.76 Range $59.60 - $91.82

Q3 2024

Shares 443,927 Value ($000) $27 Avg Close $52.69 Range $44.89 - $63.06

Q2 2024

Shares 454,152 Value ($000) $22 Avg Close $47.46 Range $43.30 - $53.58

Q1 2024

Shares 621,350 Value ($000) $31 Avg Close $52.75 Range $44.22 - $63.24

Q4 2023

Shares 646,627 Value ($000) $29 Avg Close $44.09 Range $39.94 - $48.36

Q3 2023

Shares 614,759 Value ($000) $29 Avg Close $44.08 Range $40.10 - $50.72

Q2 2023

Shares 696,345 Value ($000) $30 Avg Close $45.54 Range $40.84 - $52.67

Q1 2023

Shares 720,339 Value ($000) $38 Avg Close $49.92 Range $45.83 - $54.25

Q4 2022

Shares 722,988 Value ($000) $37 Avg Close $45.21 Range $38.33 - $52.51

Q3 2022

Shares 670,985 Value ($000) $27,128 Avg Close $48.05 Range $39.44 - $56.38

Q2 2022

Shares 677,854 Value ($000) $30,978 Avg Close $51.84 Range $41.63 - $61.78

Q1 2022

Shares 682,774 Value ($000) $41,396 Avg Close $65.45 Range $53.29 - $77.38

Q4 2021

Shares 661,188 Value ($000) $50,892 Avg Close $61.70 Range $51.01 - $78.28

Q3 2021

Shares 576,959 Value ($000) $29,627 Avg Close $55.54 Range $50.34 - $58.85

Q2 2021

Shares 509,438 Value ($000) $28,982 Avg Close $55.12 Range $49.51 - $61.09

Q3 2020

Shares 312,788 Value ($000) $12,415 Avg Close $52.62 Range $38.20 - $61.52

Q2 2020

Shares 546,187 Value ($000) $29,582 Avg Close $49.71 Range $38.00 - $57.19

Q1 2020

Shares 502,752 Value ($000) $20,015 Avg Close $41.03 Range $30.58 - $44.61

Q4 2019

Shares 475,336 Value ($000) $20,292 Avg Close $38.10 Range $33.22 - $43.97

Q3 2019

Shares 511,236 Value ($000) $20,056 Avg Close $41.92 Range $37.94 - $46.78

Q2 2019

Shares 380,179 Value ($000) $15,636 Avg Close $38.48 Range $32.76 - $46.23

Q1 2019

Shares 403,178 Value ($000) $15,054 Avg Close $38.83 Range $32.85 - $45.70

Q4 2018

Shares 302,063 Value ($000) $10,243 Avg Close $31.69 Range $28.23 - $36.55

Q3 2018

Shares 200,924 Value ($000) $6,277 Avg Close $28.02 Range $25.19 - $32.33

Q2 2018

Shares 1,434 Value ($000) $38 Avg Close $25.40 Range $22.99 - $27.10

Q1 2018

Shares 1,516 Value ($000) $39 Avg Close $23.53 Range $20.71 - $27.73

Q4 2017

Shares 1,695 Value ($000) $35 Avg Close $21.20 Range $19.40 - $22.63

Q3 2017

Shares 734 Value ($000) $16 Avg Close $23.93 Range $20.86 - $26.92

Q2 2017

Shares 1,304 Value ($000) $33 Avg Close $23.96 Range $21.43 - $27.98

Q3 2016

Shares 226 Value ($000) $5 Avg Close $20.85 Range $17.59 - $23.60

Q1 2016

Shares 573,074 Value ($000) $10,900 Avg Close $18.47 Range $16.32 - $21.14

Q4 2015

Shares 577,299 Value ($000) $11,944 Avg Close $22.97 Range $18.98 - $25.46

Q3 2015

Shares 579,926 Value ($000) $12,016 Avg Close $23.24 Range $17.97 - $26.50

Q2 2015

Shares 573,448 Value ($000) $13,579 Avg Close $22.84 Range $18.75 - $26.20

Q1 2015

Shares 625,003 Value ($000) $12,069 Avg Close $19.93 Range $17.86 - $21.47

Q4 2014

Shares 798,421 Value ($000) $15,498 Avg Close $16.70 Range $13.77 - $20.14

Q3 2014

Shares 829,418 Value ($000) $13,868 Avg Close $19.60 Range $16.66 - $22.46

Q2 2014

Shares 744,097 Value ($000) $16,118 Avg Close $20.54 Range $18.00 - $24.21

Q1 2014

Shares 782,081 Value ($000) $17,785 Avg Close $23.52 Range $21.41 - $27.16

Q4 2013

Shares 954,121 Value ($000) $22,833 Avg Close $23.81 Range $20.93 - $27.94

Q3 2013

Shares 1,061,377 Value ($000) $26,513 Avg Close $22.53 Range $19.37 - $26.17

Q2 2013

Shares 1,062,524 Value ($000) $20,635 Avg Close $16.65 Range $14.14 - $20.60

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	145,982	$34,141	$194.00	$143.19 - $248.00
Q3 2025	311,353	$45,355	$101.84	$76.89 - $146.53
Q2 2025	357,448	$29,071	$71.73	$49.21 - $86.21
Q1 2025	420,901	$25	$79.05	$58.04 - $101.44
Q4 2024	430,510	$37	$71.76	$59.60 - $91.82
Q3 2024	443,927	$27	$52.69	$44.89 - $63.06
Q2 2024	454,152	$22	$47.46	$43.30 - $53.58
Q1 2024	621,350	$31	$52.75	$44.22 - $63.24
Q4 2023	646,627	$29	$44.09	$39.94 - $48.36
Q3 2023	614,759	$29	$44.08	$40.10 - $50.72
Q2 2023	696,345	$30	$45.54	$40.84 - $52.67
Q1 2023	720,339	$38	$49.92	$45.83 - $54.25
Q4 2022	722,988	$37	$45.21	$38.33 - $52.51
Q3 2022	670,985	$27,128	$48.05	$39.44 - $56.38
Q2 2022	677,854	$30,978	$51.84	$41.63 - $61.78
Q1 2022	682,774	$41,396	$65.45	$53.29 - $77.38
Q4 2021	661,188	$50,892	$61.70	$51.01 - $78.28
Q3 2021	576,959	$29,627	$55.54	$50.34 - $58.85
Q2 2021	509,438	$28,982	$55.12	$49.51 - $61.09
Q3 2020	312,788	$12,415	$52.62	$38.20 - $61.52
Q2 2020	546,187	$29,582	$49.71	$38.00 - $57.19
Q1 2020	502,752	$20,015	$41.03	$30.58 - $44.61
Q4 2019	475,336	$20,292	$38.10	$33.22 - $43.97
Q3 2019	511,236	$20,056	$41.92	$37.94 - $46.78
Q2 2019	380,179	$15,636	$38.48	$32.76 - $46.23
Q1 2019	403,178	$15,054	$38.83	$32.85 - $45.70
Q4 2018	302,063	$10,243	$31.69	$28.23 - $36.55
Q3 2018	200,924	$6,277	$28.02	$25.19 - $32.33
Q2 2018	1,434	$38	$25.40	$22.99 - $27.10
Q1 2018	1,516	$39	$23.53	$20.71 - $27.73
Q4 2017	1,695	$35	$21.20	$19.40 - $22.63
Q3 2017	734	$16	$23.93	$20.86 - $26.92
Q2 2017	1,304	$33	$23.96	$21.43 - $27.98
Q3 2016	226	$5	$20.85	$17.59 - $23.60
Q1 2016	573,074	$10,900	$18.47	$16.32 - $21.14
Q4 2015	577,299	$11,944	$22.97	$18.98 - $25.46
Q3 2015	579,926	$12,016	$23.24	$17.97 - $26.50
Q2 2015	573,448	$13,579	$22.84	$18.75 - $26.20
Q1 2015	625,003	$12,069	$19.93	$17.86 - $21.47
Q4 2014	798,421	$15,498	$16.70	$13.77 - $20.14
Q3 2014	829,418	$13,868	$19.60	$16.66 - $22.46
Q2 2014	744,097	$16,118	$20.54	$18.00 - $24.21
Q1 2014	782,081	$17,785	$23.52	$21.41 - $27.16
Q4 2013	954,121	$22,833	$23.81	$20.93 - $27.94
Q3 2013	1,061,377	$26,513	$22.53	$19.37 - $26.17
Q2 2013	1,062,524	$20,635	$16.65	$14.14 - $20.60