COGENT COMMUNICATIONS HOLDINGS, INC. - CCOI
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| May 22, 2026 | SCHEDULE 13G | Park West Asset Management LLC | 5.1% | 2,546,505 | View |
| May 22, 2026 | SCHEDULE 13G | Peter S. Park | 5.1% | 2,546,505 | View |
| Apr 29, 2026 | SCHEDULE 13G | Vanguard Portfolio Management | 5.57% | 2,791,142 | View |
| Mar 26, 2026 | SCHEDULE 13G/A | The Vanguard Group | 0.0% | 0 | View |
| Feb 17, 2026 | SCHEDULE 13G/A | Turtle Creek Asset Management Inc. | 8.2% | 4,036,847 | View |
| Jan 23, 2026 | SCHEDULE 13G/A | BlackRock, Inc. | 14.4% | 7,068,397 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.