COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

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

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

Q1 2025

Shares 121,751 Value ($000) $7 Avg Close $69.28 Range $57.13 - $78.75

Q4 2024

Shares 91,910 Value ($000) $7 Avg Close $74.16 Range $68.55 - $80.31

Q2 2020

Shares 653,445 Value ($000) $50,551 Avg Close $59.24 Range $53.63 - $67.78

Q1 2020

Shares 544,673 Value ($000) $44,647 Avg Close $54.80 Range $46.85 - $63.38

Q4 2019

Shares 857,487 Value ($000) $56,431 Avg Close $43.44 Range $38.28 - $48.23

Q3 2019

Shares 881,609 Value ($000) $48,577 Avg Close $42.42 Range $38.13 - $45.53

Q2 2019

Shares 753,474 Value ($000) $44,726 Avg Close $40.47 Range $37.32 - $43.54

Q1 2019

Shares 850,516 Value ($000) $46,141 Avg Close $34.25 Range $30.46 - $38.29

Q4 2018

Shares 809,777 Value ($000) $36,610 Avg Close $34.08 Range $29.38 - $39.03

Q3 2018

Shares 713,303 Value ($000) $39,802 Avg Close $36.52 Range $31.80 - $39.09

Q2 2018

Shares 716,320 Value ($000) $38,252 Avg Close $33.53 Range $28.42 - $38.12

Q1 2018

Shares 719,478 Value ($000) $31,226 Avg Close $29.20 Range $23.71 - $30.80

Q4 2017

Shares 739,923 Value ($000) $33,519 Avg Close $31.42 Range $27.83 - $36.00

Q3 2017

Shares 727,922 Value ($000) $35,596 Avg Close $28.92 Range $24.75 - $32.98

Q2 2017

Shares 749,094 Value ($000) $30,039 Avg Close $26.76 Range $24.58 - $29.07

Q1 2017

Shares 746,522 Value ($000) $32,138 Avg Close $26.58 Range $24.73 - $28.22

Q4 2016

Shares 762,728 Value ($000) $31,539 Avg Close $24.11 Range $21.53 - $26.92

Q3 2016

Shares 795,786 Value ($000) $29,292 Avg Close $24.16 Range $22.06 - $27.15

Q2 2016

Shares 826,030 Value ($000) $33,090 Avg Close $24.32 Range $22.65 - $26.11

Q1 2016

Shares 678,154 Value ($000) $26,468 Avg Close $21.23 Range $18.11 - $24.16

Q4 2015

Shares 351,327 Value ($000) $12,187 Avg Close $19.64 Range $15.90 - $22.21

Q3 2014

Shares 2,578 Value ($000) $87 Avg Close $19.66 Range $18.35 - $21.27

Q2 2014

Shares 2,578 Value ($000) $89 Avg Close $20.24 Range $18.87 - $21.66

Q1 2014

Shares 2,614 Value ($000) $93 Avg Close $22.15 Range $17.84 - $24.59

Q4 2013

Shares 649 Value ($000) $26 Avg Close $20.46 Range $17.72 - $23.32

Q3 2013

Shares 649 Value ($000) $21 Avg Close $17.12 Range $15.63 - $18.44

Q2 2013

Shares 363 Value ($000) $10 Avg Close $15.51 Range $14.03 - $16.52

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2025	121,751	$7	$69.28	$57.13 - $78.75
Q4 2024	91,910	$7	$74.16	$68.55 - $80.31
Q2 2020	653,445	$50,551	$59.24	$53.63 - $67.78
Q1 2020	544,673	$44,647	$54.80	$46.85 - $63.38
Q4 2019	857,487	$56,431	$43.44	$38.28 - $48.23
Q3 2019	881,609	$48,577	$42.42	$38.13 - $45.53
Q2 2019	753,474	$44,726	$40.47	$37.32 - $43.54
Q1 2019	850,516	$46,141	$34.25	$30.46 - $38.29
Q4 2018	809,777	$36,610	$34.08	$29.38 - $39.03
Q3 2018	713,303	$39,802	$36.52	$31.80 - $39.09
Q2 2018	716,320	$38,252	$33.53	$28.42 - $38.12
Q1 2018	719,478	$31,226	$29.20	$23.71 - $30.80
Q4 2017	739,923	$33,519	$31.42	$27.83 - $36.00
Q3 2017	727,922	$35,596	$28.92	$24.75 - $32.98
Q2 2017	749,094	$30,039	$26.76	$24.58 - $29.07
Q1 2017	746,522	$32,138	$26.58	$24.73 - $28.22
Q4 2016	762,728	$31,539	$24.11	$21.53 - $26.92
Q3 2016	795,786	$29,292	$24.16	$22.06 - $27.15
Q2 2016	826,030	$33,090	$24.32	$22.65 - $26.11
Q1 2016	678,154	$26,468	$21.23	$18.11 - $24.16
Q4 2015	351,327	$12,187	$19.64	$15.90 - $22.21
Q3 2014	2,578	$87	$19.66	$18.35 - $21.27
Q2 2014	2,578	$89	$20.24	$18.87 - $21.66
Q1 2014	2,614	$93	$22.15	$17.84 - $24.59
Q4 2013	649	$26	$20.46	$17.72 - $23.32
Q3 2013	649	$21	$17.12	$15.63 - $18.44
Q2 2013	363	$10	$15.51	$14.03 - $16.52