COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

DF DENT & CO INC's Holding History (CIK: 0000934999)

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

Q1 2023

Shares 15,476 Value ($000) $986 Avg Close $53.95 Range $47.34 - $59.59

Q4 2022

Shares 15,476 Value ($000) $883 Avg Close $45.47 Range $38.44 - $49.77

Q3 2022

Shares 63,298 Value ($000) $3,302 Avg Close $47.03 Range $40.31 - $52.62

Q2 2022

Shares 187,633 Value ($000) $11,401 Avg Close $49.50 Range $44.69 - $57.61

Q1 2022

Shares 220,072 Value ($000) $14,602 Avg Close $50.68 Range $45.04 - $58.30

Q4 2021

Shares 214,704 Value ($000) $15,712 Avg Close $58.80 Range $54.37 - $63.01

Q3 2021

Shares 213,953 Value ($000) $15,156 Avg Close $57.54 Range $54.65 - $60.62

Q2 2021

Shares 243,601 Value ($000) $18,730 Avg Close $56.91 Range $51.11 - $61.32

Q1 2021

Shares 223,475 Value ($000) $15,366 Avg Close $46.19 Range $42.45 - $53.35

Q4 2020

Shares 202,977 Value ($000) $12,152 Avg Close $44.21 Range $39.55 - $48.39

Q3 2020

Shares 156,997 Value ($000) $9,428 Avg Close $53.91 Range $43.66 - $66.92

Q2 2020

Shares 113,138 Value ($000) $8,752 Avg Close $59.24 Range $53.63 - $67.78

Q1 2020

Shares 108,103 Value ($000) $8,861 Avg Close $54.80 Range $46.85 - $63.38

Q4 2019

Shares 159,913 Value ($000) $10,524 Avg Close $43.44 Range $38.28 - $48.23

Q3 2019

Shares 158,031 Value ($000) $8,708 Avg Close $42.42 Range $38.13 - $45.53

Q2 2019

Shares 156,275 Value ($000) $9,276 Avg Close $40.47 Range $37.32 - $43.54

Q1 2019

Shares 156,418 Value ($000) $8,486 Avg Close $34.25 Range $30.46 - $38.29

Q4 2018

Shares 55,690 Value ($000) $2,518 Avg Close $34.08 Range $29.38 - $39.03

Q3 2018

Shares 35,776 Value ($000) $1,996 Avg Close $36.52 Range $31.80 - $39.09

Q2 2018

Shares 33,637 Value ($000) $1,796 Avg Close $33.53 Range $28.42 - $38.12

Q1 2018

Shares 40,659 Value ($000) $1,765 Avg Close $29.20 Range $23.71 - $30.80

Q4 2017

Shares 36,486 Value ($000) $1,653 Avg Close $31.42 Range $27.83 - $36.00

Q3 2017

Shares 35,481 Value ($000) $1,735 Avg Close $28.92 Range $24.75 - $32.98

Q2 2017

Shares 27,518 Value ($000) $1,103 Avg Close $26.76 Range $24.58 - $29.07

Q1 2017

Shares 15,598 Value ($000) $671 Avg Close $26.58 Range $24.73 - $28.22

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2023	15,476	$986	$53.95	$47.34 - $59.59
Q4 2022	15,476	$883	$45.47	$38.44 - $49.77
Q3 2022	63,298	$3,302	$47.03	$40.31 - $52.62
Q2 2022	187,633	$11,401	$49.50	$44.69 - $57.61
Q1 2022	220,072	$14,602	$50.68	$45.04 - $58.30
Q4 2021	214,704	$15,712	$58.80	$54.37 - $63.01
Q3 2021	213,953	$15,156	$57.54	$54.65 - $60.62
Q2 2021	243,601	$18,730	$56.91	$51.11 - $61.32
Q1 2021	223,475	$15,366	$46.19	$42.45 - $53.35
Q4 2020	202,977	$12,152	$44.21	$39.55 - $48.39
Q3 2020	156,997	$9,428	$53.91	$43.66 - $66.92
Q2 2020	113,138	$8,752	$59.24	$53.63 - $67.78
Q1 2020	108,103	$8,861	$54.80	$46.85 - $63.38
Q4 2019	159,913	$10,524	$43.44	$38.28 - $48.23
Q3 2019	158,031	$8,708	$42.42	$38.13 - $45.53
Q2 2019	156,275	$9,276	$40.47	$37.32 - $43.54
Q1 2019	156,418	$8,486	$34.25	$30.46 - $38.29
Q4 2018	55,690	$2,518	$34.08	$29.38 - $39.03
Q3 2018	35,776	$1,996	$36.52	$31.80 - $39.09
Q2 2018	33,637	$1,796	$33.53	$28.42 - $38.12
Q1 2018	40,659	$1,765	$29.20	$23.71 - $30.80
Q4 2017	36,486	$1,653	$31.42	$27.83 - $36.00
Q3 2017	35,481	$1,735	$28.92	$24.75 - $32.98
Q2 2017	27,518	$1,103	$26.76	$24.58 - $29.07
Q1 2017	15,598	$671	$26.58	$24.73 - $28.22