COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q4 2025

Shares 57,464 Value ($000) $1,239 Avg Close $29.49 Range $15.94 - $45.64

Q3 2025

Shares 49,517 Value ($000) $1,899 Avg Close $41.02 Range $28.78 - $52.83

Q2 2025

Shares 52,150 Value ($000) $2,514 Avg Close $48.69 Range $42.42 - $59.17

Q1 2025

Shares 52,597 Value ($000) $3,225 Avg Close $69.28 Range $57.13 - $78.75

Q4 2024

Shares 52,770 Value ($000) $4,067 Avg Close $74.16 Range $68.55 - $80.31

Q3 2024

Shares 52,443 Value ($000) $3,981 Avg Close $63.26 Range $49.39 - $71.55

Q2 2024

Shares 55,282 Value ($000) $3,120 Avg Close $53.96 Range $46.40 - $59.71

Q1 2024

Shares 52,250 Value ($000) $3,413 Avg Close $64.78 Range $55.32 - $76.16

Q4 2023

Shares 54,593 Value ($000) $4,152 Avg Close $58.68 Range $51.06 - $67.91

Q3 2023

Shares 53,893 Value ($000) $3,336 Avg Close $56.65 Range $49.37 - $62.58

Q2 2023

Shares 53,893 Value ($000) $3,626 Avg Close $55.79 Range $51.89 - $63.61

Q1 2023

Shares 53,893 Value ($000) $3,434 Avg Close $53.95 Range $47.34 - $59.59

Q4 2022

Shares 62,799 Value ($000) $3,585 Avg Close $45.47 Range $38.44 - $49.77

Q3 2022

Shares 65,453 Value ($000) $3,414 Avg Close $47.03 Range $40.31 - $52.62

Q2 2022

Shares 65,397 Value ($000) $3,974 Avg Close $49.50 Range $44.69 - $57.61

Q1 2022

Shares 94,860 Value ($000) $6,294 Avg Close $50.68 Range $45.04 - $58.30

Q4 2021

Shares 84,712 Value ($000) $6,199 Avg Close $58.80 Range $54.37 - $63.01

Q3 2021

Shares 68,578 Value ($000) $4,858 Avg Close $57.54 Range $54.65 - $60.62

Q2 2021

Shares 71,267 Value ($000) $5,480 Avg Close $56.91 Range $51.11 - $61.32

Q1 2021

Shares 97,737 Value ($000) $6,720 Avg Close $46.19 Range $42.45 - $53.35

Q4 2020

Shares 66,978 Value ($000) $4,010 Avg Close $44.21 Range $39.55 - $48.39

Q3 2020

Shares 64,427 Value ($000) $3,869 Avg Close $53.91 Range $43.66 - $66.92

Q2 2020

Shares 70,367 Value ($000) $5,444 Avg Close $59.24 Range $53.63 - $67.78

Q1 2020

Shares 65,647 Value ($000) $5,381 Avg Close $54.80 Range $46.85 - $63.38

Q4 2019

Shares 66,631 Value ($000) $4,385 Avg Close $43.44 Range $38.28 - $48.23

Q3 2019

Shares 66,431 Value ($000) $3,660 Avg Close $42.42 Range $38.13 - $45.53

Q2 2019

Shares 77,761 Value ($000) $4,616 Avg Close $40.47 Range $37.32 - $43.54

Q1 2019

Shares 66,061 Value ($000) $3,584 Avg Close $34.25 Range $30.46 - $38.29

Q4 2018

Shares 66,061 Value ($000) $2,987 Avg Close $34.08 Range $29.38 - $39.03

Q3 2018

Shares 66,061 Value ($000) $3,686 Avg Close $36.52 Range $31.80 - $39.09

Q2 2018

Shares 68,361 Value ($000) $3,650 Avg Close $33.53 Range $28.42 - $38.12

Q1 2018

Shares 59,761 Value ($000) $2,594 Avg Close $29.20 Range $23.71 - $30.80

Q4 2017

Shares 68,461 Value ($000) $3,101 Avg Close $31.42 Range $27.83 - $36.00

Q3 2017

Shares 69,861 Value ($000) $3,416 Avg Close $28.92 Range $24.75 - $32.98

Q2 2017

Shares 69,861 Value ($000) $2,801 Avg Close $26.76 Range $24.58 - $29.07

Q1 2017

Shares 66,861 Value ($000) $2,878 Avg Close $26.58 Range $24.73 - $28.22

Q4 2016

Shares 66,861 Value ($000) $2,765 Avg Close $24.11 Range $21.53 - $26.92

Q3 2016

Shares 62,361 Value ($000) $2,296 Avg Close $24.16 Range $22.06 - $27.15

Q2 2016

Shares 77,861 Value ($000) $3,119 Avg Close $24.32 Range $22.65 - $26.11

Q1 2016

Shares 86,261 Value ($000) $3,367 Avg Close $21.23 Range $18.11 - $24.16

Q4 2015

Shares 83,465 Value ($000) $2,895 Avg Close $19.64 Range $15.90 - $22.21

Q3 2015

Shares 93,065 Value ($000) $2,528 Avg Close $17.72 Range $15.62 - $20.44

Q2 2015

Shares 97,341 Value ($000) $3,294 Avg Close $19.88 Range $18.21 - $21.34

Q1 2015

Shares 86,641 Value ($000) $3,061 Avg Close $21.41 Range $19.59 - $23.64

Q4 2014

Shares 88,941 Value ($000) $3,148 Avg Close $19.46 Range $17.19 - $21.00

Q3 2014

Shares 88,941 Value ($000) $2,989 Avg Close $19.66 Range $18.35 - $21.27

Q2 2014

Shares 92,841 Value ($000) $3,208 Avg Close $20.24 Range $18.87 - $21.66

Q1 2014

Shares 96,519 Value ($000) $3,429 Avg Close $22.15 Range $17.84 - $24.59

Q4 2013

Shares 98,719 Value ($000) $3,989 Avg Close $20.46 Range $17.72 - $23.32

Q3 2013

Shares 107,019 Value ($000) $3,451 Avg Close $17.12 Range $15.63 - $18.44

Q2 2013

Shares 110,359 Value ($000) $3,107 Avg Close $15.51 Range $14.03 - $16.52

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	57,464	$1,239	$29.49	$15.94 - $45.64
Q3 2025	49,517	$1,899	$41.02	$28.78 - $52.83
Q2 2025	52,150	$2,514	$48.69	$42.42 - $59.17
Q1 2025	52,597	$3,225	$69.28	$57.13 - $78.75
Q4 2024	52,770	$4,067	$74.16	$68.55 - $80.31
Q3 2024	52,443	$3,981	$63.26	$49.39 - $71.55
Q2 2024	55,282	$3,120	$53.96	$46.40 - $59.71
Q1 2024	52,250	$3,413	$64.78	$55.32 - $76.16
Q4 2023	54,593	$4,152	$58.68	$51.06 - $67.91
Q3 2023	53,893	$3,336	$56.65	$49.37 - $62.58
Q2 2023	53,893	$3,626	$55.79	$51.89 - $63.61
Q1 2023	53,893	$3,434	$53.95	$47.34 - $59.59
Q4 2022	62,799	$3,585	$45.47	$38.44 - $49.77
Q3 2022	65,453	$3,414	$47.03	$40.31 - $52.62
Q2 2022	65,397	$3,974	$49.50	$44.69 - $57.61
Q1 2022	94,860	$6,294	$50.68	$45.04 - $58.30
Q4 2021	84,712	$6,199	$58.80	$54.37 - $63.01
Q3 2021	68,578	$4,858	$57.54	$54.65 - $60.62
Q2 2021	71,267	$5,480	$56.91	$51.11 - $61.32
Q1 2021	97,737	$6,720	$46.19	$42.45 - $53.35
Q4 2020	66,978	$4,010	$44.21	$39.55 - $48.39
Q3 2020	64,427	$3,869	$53.91	$43.66 - $66.92
Q2 2020	70,367	$5,444	$59.24	$53.63 - $67.78
Q1 2020	65,647	$5,381	$54.80	$46.85 - $63.38
Q4 2019	66,631	$4,385	$43.44	$38.28 - $48.23
Q3 2019	66,431	$3,660	$42.42	$38.13 - $45.53
Q2 2019	77,761	$4,616	$40.47	$37.32 - $43.54
Q1 2019	66,061	$3,584	$34.25	$30.46 - $38.29
Q4 2018	66,061	$2,987	$34.08	$29.38 - $39.03
Q3 2018	66,061	$3,686	$36.52	$31.80 - $39.09
Q2 2018	68,361	$3,650	$33.53	$28.42 - $38.12
Q1 2018	59,761	$2,594	$29.20	$23.71 - $30.80
Q4 2017	68,461	$3,101	$31.42	$27.83 - $36.00
Q3 2017	69,861	$3,416	$28.92	$24.75 - $32.98
Q2 2017	69,861	$2,801	$26.76	$24.58 - $29.07
Q1 2017	66,861	$2,878	$26.58	$24.73 - $28.22
Q4 2016	66,861	$2,765	$24.11	$21.53 - $26.92
Q3 2016	62,361	$2,296	$24.16	$22.06 - $27.15
Q2 2016	77,861	$3,119	$24.32	$22.65 - $26.11
Q1 2016	86,261	$3,367	$21.23	$18.11 - $24.16
Q4 2015	83,465	$2,895	$19.64	$15.90 - $22.21
Q3 2015	93,065	$2,528	$17.72	$15.62 - $20.44
Q2 2015	97,341	$3,294	$19.88	$18.21 - $21.34
Q1 2015	86,641	$3,061	$21.41	$19.59 - $23.64
Q4 2014	88,941	$3,148	$19.46	$17.19 - $21.00
Q3 2014	88,941	$2,989	$19.66	$18.35 - $21.27
Q2 2014	92,841	$3,208	$20.24	$18.87 - $21.66
Q1 2014	96,519	$3,429	$22.15	$17.84 - $24.59
Q4 2013	98,719	$3,989	$20.46	$17.72 - $23.32
Q3 2013	107,019	$3,451	$17.12	$15.63 - $18.44
Q2 2013	110,359	$3,107	$15.51	$14.03 - $16.52