Cogent Communications Holdings, Inc.

BLAIR WILLIAM & CO/IL CCOI

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/17/2026

Shares

177,655

Value ($000)

3,830

Weight

0.0%

2013 Q4 - 2025 Q4 (28 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	2/17/2026	3,830	0.0%	177,655	12/31/2025
2025 Q3	11/12/2025	9,235	0.0%	240,796	9/30/2025
2025 Q2	7/24/2025	11,403	0.0%	236,520	6/30/2025
2025 Q1	5/9/2025	12,464	0.0%	203,297	3/31/2025
2024 Q4	2/12/2025	16,090	0.0%	208,773	12/31/2024
2024 Q3	11/12/2024	17,106	0.1%	225,312	9/30/2024
2024 Q2	8/12/2024	17,017	0.1%	301,499	6/30/2024
2024 Q1	5/9/2024	20,027	0.1%	306,552	3/31/2024
2023 Q4	2/12/2024	28,346	0.1%	372,679	12/31/2023
2023 Q3	11/9/2023	23,436	0.1%	378,609	9/30/2023
2023 Q2	8/11/2023	25,668	0.1%	381,460	6/30/2023
2023 Q1	5/12/2023	27,033	0.1%	424,242	3/31/2023
2022 Q4	2/10/2023	25,493	0.1%	446,619	12/31/2022
2022 Q3	11/9/2022	25,480	0.1%	488,502	9/30/2022
2022 Q2	8/10/2022	25,841	0.1%	425,289	6/30/2022
2022 Q1	5/13/2022	29,654	0.1%	446,930	3/31/2022
2021 Q4	2/14/2022	32,752	0.1%	447,556	12/31/2021
2021 Q3	11/12/2021	30,171	0.1%	425,909	9/30/2021
2021 Q2	8/12/2021	26,170	0.1%	340,358	6/30/2021
2021 Q1	5/13/2021	24,468	0.1%	355,850	3/31/2021
2020 Q4	2/9/2021	16,630	0.1%	277,763	12/31/2020
2020 Q3	11/6/2020	12,825	0.1%	213,568	9/30/2020
2020 Q2	8/12/2020	12,407	0.1%	160,378	6/30/2020
2020 Q1	5/11/2020	12,614	0.1%	153,891	3/31/2020
2019 Q4	2/13/2020	11,788	0.1%	179,124	12/31/2019
2014 Q2	8/1/2014	3,529	0.0%	102,169	6/30/2014
2014 Q1	5/6/2014	3,588	0.0%	101,009	3/31/2014
2013 Q4	2/11/2014	4,283	0.0%	106,009	12/31/2013