COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

BROWN BROTHERS HARRIMAN & CO's Holding History (CIK: 0000014661)

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

Q4 2025
Shares 34 Value ($000) $1 Avg Close $29.49 Range $15.94 - $45.64
Q3 2025
Shares 34 Value ($000) $1 Avg Close $41.02 Range $28.78 - $52.83
Q2 2025
Shares 34 Value ($000) $2 Avg Close $48.69 Range $42.42 - $59.17
Q3 2022
Shares 368 Value ($000) $19 Avg Close $47.03 Range $40.31 - $52.62
Q1 2020
Shares 33,536 Value ($000) $2,749 Avg Close $54.80 Range $46.85 - $63.38
Q4 2019
Shares 33,536 Value ($000) $2,207 Avg Close $43.44 Range $38.28 - $48.23
Q3 2019
Shares 33,536 Value ($000) $1,848 Avg Close $42.42 Range $38.13 - $45.53
Q2 2019
Shares 33,536 Value ($000) $1,991 Avg Close $40.47 Range $37.32 - $43.54
Q1 2019
Shares 33,536 Value ($000) $1,819 Avg Close $34.25 Range $30.46 - $38.29
Q4 2018
Shares 33,536 Value ($000) $1,516 Avg Close $34.08 Range $29.38 - $39.03
Q3 2018
Shares 33,536 Value ($000) $1,871 Avg Close $36.52 Range $31.80 - $39.09
Q2 2018
Shares 33,536 Value ($000) $1,791 Avg Close $33.53 Range $28.42 - $38.12
Q1 2018
Shares 33,536 Value ($000) $1,455 Avg Close $29.20 Range $23.71 - $30.80
Q4 2017
Shares 33,536 Value ($000) $1,519 Avg Close $31.42 Range $27.83 - $36.00
Q3 2017
Shares 33,536 Value ($000) $1,640 Avg Close $28.92 Range $24.75 - $32.98
Q2 2017
Shares 33,536 Value ($000) $1,345 Avg Close $26.76 Range $24.58 - $29.07
Q1 2017
Shares 33,536 Value ($000) $1,444 Avg Close $26.58 Range $24.73 - $28.22
Q4 2016
Shares 33,536 Value ($000) $1,387 Avg Close $24.11 Range $21.53 - $26.92
Q3 2016
Shares 42,536 Value ($000) $1,566 Avg Close $24.16 Range $22.06 - $27.15
Q2 2016
Shares 42,536 Value ($000) $1,704 Avg Close $24.32 Range $22.65 - $26.11
Q1 2016
Shares 42,536 Value ($000) $1,660 Avg Close $21.23 Range $18.11 - $24.16
Q4 2015
Shares 42,536 Value ($000) $1,476 Avg Close $19.64 Range $15.90 - $22.21
Q3 2015
Shares 42,536 Value ($000) $1,155 Avg Close $17.72 Range $15.62 - $20.44
Q2 2015
Shares 42,536 Value ($000) $1,439 Avg Close $19.88 Range $18.21 - $21.34
Q1 2015
Shares 42,536 Value ($000) $1,503 Avg Close $21.41 Range $19.59 - $23.64
Q4 2014
Shares 42,536 Value ($000) $1,505 Avg Close $19.46 Range $17.19 - $21.00
Q3 2014
Shares 42,536 Value ($000) $1,430 Avg Close $19.66 Range $18.35 - $21.27
Q2 2014
Shares 42,536 Value ($000) $1,470 Avg Close $20.24 Range $18.87 - $21.66