CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

FIRST MANHATTAN CO. LLC.'s Holding History (CIK: 0000728083)

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

Q4 2025

Shares 46,141 Value ($000) $10,791 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 47,341 Value ($000) $6,896 Avg Close $101.84 Range $76.89 - $146.53

Q2 2025

Shares 52,872 Value ($000) $4,300 Avg Close $71.73 Range $49.21 - $86.21

Q1 2025

Shares 59,827 Value ($000) $3,615 Avg Close $79.05 Range $58.04 - $101.44

Q4 2024

Shares 84,044 Value ($000) $7,128 Avg Close $71.76 Range $59.60 - $91.82

Q3 2024

Shares 84,944 Value ($000) $5,232 Avg Close $52.69 Range $44.89 - $63.06

Q2 2024

Shares 85,169 Value ($000) $4,103 Avg Close $47.46 Range $43.30 - $53.58

Q1 2024

Shares 85,219 Value ($000) $4,214 Avg Close $52.75 Range $44.22 - $63.24

Q4 2023

Shares 86,138 Value ($000) $3,877 Avg Close $44.09 Range $39.94 - $48.36

Q3 2023

Shares 79,065 Value ($000) $3,737 Avg Close $44.08 Range $40.10 - $50.72

Q2 2023

Shares 80,454 Value ($000) $3,418 Avg Close $45.54 Range $40.84 - $52.67

Q1 2023

Shares 89,312 Value ($000) $4,691 Avg Close $49.92 Range $45.83 - $54.25

Q4 2022

Shares 95,283 Value ($000) $4,858 Avg Close $45.21 Range $38.33 - $52.51

Q3 2022

Shares 95,834 Value ($000) $3,874 Avg Close $48.05 Range $39.44 - $56.38

Q2 2022

Shares 96,634 Value ($000) $4,416 Avg Close $51.84 Range $41.63 - $61.78

Q1 2022

Shares 96,634 Value ($000) $5,858 Avg Close $65.45 Range $53.29 - $77.38

Q4 2021

Shares 97,655 Value ($000) $7,516 Avg Close $61.70 Range $51.01 - $78.28

Q3 2021

Shares 97,894 Value ($000) $5,026 Avg Close $55.54 Range $50.34 - $58.85

Q2 2021

Shares 98,874 Value ($000) $5,624 Avg Close $55.12 Range $49.51 - $61.09

Q1 2021

Shares 101,178 Value ($000) $5,536 Avg Close $53.81 Range $47.52 - $57.57

Q4 2020

Shares 101,178 Value ($000) $5,347 Avg Close $44.43 Range $38.03 - $54.05

Q3 2020

Shares 102,374 Value ($000) $4,063 Avg Close $52.62 Range $38.20 - $61.52

Q2 2020

Shares 103,824 Value ($000) $5,623 Avg Close $49.71 Range $38.00 - $57.19

Q1 2020

Shares 104,024 Value ($000) $4,141 Avg Close $41.03 Range $30.58 - $44.61

Q4 2019

Shares 104,324 Value ($000) $4,453 Avg Close $38.10 Range $33.22 - $43.97

Q3 2019

Shares 105,094 Value ($000) $4,122 Avg Close $41.92 Range $37.94 - $46.78

Q2 2019

Shares 106,194 Value ($000) $4,367 Avg Close $38.48 Range $32.76 - $46.23

Q1 2019

Shares 108,094 Value ($000) $4,036 Avg Close $38.83 Range $32.85 - $45.70

Q4 2018

Shares 109,594 Value ($000) $3,716 Avg Close $31.69 Range $28.23 - $36.55

Q3 2018

Shares 109,414 Value ($000) $3,418 Avg Close $28.02 Range $25.19 - $32.33

Q2 2018

Shares 109,414 Value ($000) $2,900 Avg Close $25.40 Range $22.99 - $27.10

Q1 2018

Shares 110,214 Value ($000) $2,854 Avg Close $23.53 Range $20.71 - $27.73

Q4 2017

Shares 106,900 Value ($000) $2,237 Avg Close $21.20 Range $19.40 - $22.63

Q3 2017

Shares 47,170 Value ($000) $1,036 Avg Close $23.93 Range $20.86 - $26.92

Q2 2017

Shares 47,170 Value ($000) $1,180 Avg Close $23.96 Range $21.43 - $27.98

Q1 2017

Shares 47,170 Value ($000) $1,113 Avg Close $24.52 Range $22.73 - $26.84

Q4 2016

Shares 46,785 Value ($000) $1,142 Avg Close $21.85 Range $18.94 - $25.19

Q3 2016

Shares 48,012 Value ($000) $1,046 Avg Close $20.85 Range $17.59 - $23.60

Q2 2016

Shares 50,440 Value ($000) $945 Avg Close $18.11 Range $15.62 - $21.87

Q1 2016

Shares 52,240 Value ($000) $993 Avg Close $18.47 Range $16.32 - $21.14

Q4 2015

Shares 52,240 Value ($000) $1,080 Avg Close $22.97 Range $18.98 - $25.46

Q3 2015

Shares 57,240 Value ($000) $1,186 Avg Close $23.24 Range $17.97 - $26.50

Q2 2015

Shares 52,240 Value ($000) $1,237 Avg Close $22.84 Range $18.75 - $26.20

Q1 2015

Shares 54,211 Value ($000) $1,046 Avg Close $19.93 Range $17.86 - $21.47

Q4 2014

Shares 55,111 Value ($000) $1,069 Avg Close $16.70 Range $13.77 - $20.14

Q3 2014

Shares 55,111 Value ($000) $921 Avg Close $19.60 Range $16.66 - $22.46

Q2 2014

Shares 46,511 Value ($000) $1,007 Avg Close $20.54 Range $18.00 - $24.21

Q1 2014

Shares 13,511 Value ($000) $307 Avg Close $23.52 Range $21.41 - $27.16

Q4 2013

Shares 16,009 Value ($000) $383 Avg Close $23.81 Range $20.93 - $27.94

Q3 2013

Shares 16,009 Value ($000) $400 Avg Close $22.53 Range $19.37 - $26.17

Q2 2013

Shares 16,009 Value ($000) $350 Avg Close $16.65 Range $14.14 - $20.60

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	46,141	$10,791	$194.00	$143.19 - $248.00
Q3 2025	47,341	$6,896	$101.84	$76.89 - $146.53
Q2 2025	52,872	$4,300	$71.73	$49.21 - $86.21
Q1 2025	59,827	$3,615	$79.05	$58.04 - $101.44
Q4 2024	84,044	$7,128	$71.76	$59.60 - $91.82
Q3 2024	84,944	$5,232	$52.69	$44.89 - $63.06
Q2 2024	85,169	$4,103	$47.46	$43.30 - $53.58
Q1 2024	85,219	$4,214	$52.75	$44.22 - $63.24
Q4 2023	86,138	$3,877	$44.09	$39.94 - $48.36
Q3 2023	79,065	$3,737	$44.08	$40.10 - $50.72
Q2 2023	80,454	$3,418	$45.54	$40.84 - $52.67
Q1 2023	89,312	$4,691	$49.92	$45.83 - $54.25
Q4 2022	95,283	$4,858	$45.21	$38.33 - $52.51
Q3 2022	95,834	$3,874	$48.05	$39.44 - $56.38
Q2 2022	96,634	$4,416	$51.84	$41.63 - $61.78
Q1 2022	96,634	$5,858	$65.45	$53.29 - $77.38
Q4 2021	97,655	$7,516	$61.70	$51.01 - $78.28
Q3 2021	97,894	$5,026	$55.54	$50.34 - $58.85
Q2 2021	98,874	$5,624	$55.12	$49.51 - $61.09
Q1 2021	101,178	$5,536	$53.81	$47.52 - $57.57
Q4 2020	101,178	$5,347	$44.43	$38.03 - $54.05
Q3 2020	102,374	$4,063	$52.62	$38.20 - $61.52
Q2 2020	103,824	$5,623	$49.71	$38.00 - $57.19
Q1 2020	104,024	$4,141	$41.03	$30.58 - $44.61
Q4 2019	104,324	$4,453	$38.10	$33.22 - $43.97
Q3 2019	105,094	$4,122	$41.92	$37.94 - $46.78
Q2 2019	106,194	$4,367	$38.48	$32.76 - $46.23
Q1 2019	108,094	$4,036	$38.83	$32.85 - $45.70
Q4 2018	109,594	$3,716	$31.69	$28.23 - $36.55
Q3 2018	109,414	$3,418	$28.02	$25.19 - $32.33
Q2 2018	109,414	$2,900	$25.40	$22.99 - $27.10
Q1 2018	110,214	$2,854	$23.53	$20.71 - $27.73
Q4 2017	106,900	$2,237	$21.20	$19.40 - $22.63
Q3 2017	47,170	$1,036	$23.93	$20.86 - $26.92
Q2 2017	47,170	$1,180	$23.96	$21.43 - $27.98
Q1 2017	47,170	$1,113	$24.52	$22.73 - $26.84
Q4 2016	46,785	$1,142	$21.85	$18.94 - $25.19
Q3 2016	48,012	$1,046	$20.85	$17.59 - $23.60
Q2 2016	50,440	$945	$18.11	$15.62 - $21.87
Q1 2016	52,240	$993	$18.47	$16.32 - $21.14
Q4 2015	52,240	$1,080	$22.97	$18.98 - $25.46
Q3 2015	57,240	$1,186	$23.24	$17.97 - $26.50
Q2 2015	52,240	$1,237	$22.84	$18.75 - $26.20
Q1 2015	54,211	$1,046	$19.93	$17.86 - $21.47
Q4 2014	55,111	$1,069	$16.70	$13.77 - $20.14
Q3 2014	55,111	$921	$19.60	$16.66 - $22.46
Q2 2014	46,511	$1,007	$20.54	$18.00 - $24.21
Q1 2014	13,511	$307	$23.52	$21.41 - $27.16
Q4 2013	16,009	$383	$23.81	$20.93 - $27.94
Q3 2013	16,009	$400	$22.53	$19.37 - $26.17
Q2 2013	16,009	$350	$16.65	$14.14 - $20.60