Cogent Communications Group Inc
Ownership
Ownership Structure
Who owns Cogent Communications Group Inc (CCOI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 82.0% of the shares are freely tradable; institutional investors hold 102.8%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 14.40 | 7,376,384 | +4.3 | 06/30/2026 |
| Turtle Creek Asset Management Inc. | 8.21 | 4,203,527 | -3.3 | 06/30/2026 |
| Park West Asset Management LLC | 6.07 | 3,106,339 | +60.5 | 06/30/2026 |
| State Street Corp | 5.43 | 2,779,367 | +22.3 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.66 | 2,384,929 | -13.2 | 06/30/2026 |
| EdgePoint Investment | 4.46 | 2,283,378 | +0.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.98 | 2,037,716 | -3.9 | 06/30/2026 |
| Newtyn Management LLC | 3.23 | 1,655,895 | +3.5 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| EdgePoint Global Growth & Inc Port Sr F | 3.74 | 1,917,054 | +0.0 | 03/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.82 | 1,441,723 | +0.0 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Weed Thaddeus Gerard | VICE PRESIDENT, CFO | 193,050 | 907,335 $ | Sep 2, 2026 | direct |
| Montagner Marc | Director | 103,287 | 485,449 $ | Sep 30, 2026 | direct |
| Brooks Steven D | Director | 62,138 | 292,049 $ | Sep 30, 2026 | direct |
| de Sa Paul | Director | 37,237 | 175,014 $ | Sep 30, 2026 | direct |
| Kilmer Henry W | VP OF NETWORK STRATEGY | 36,200 | 170,140 $ | Sep 15, 2026 | direct |
| Howell Deneen C | Director | 35,775 | 168,143 $ | Sep 30, 2026 | direct |
| Howard Eve N | Director | 30,751 | 144,530 $ | Sep 30, 2026 | direct |
| FERGUSON Lewis H | Director | 27,984 | 131,525 $ | Sep 30, 2026 | direct |
| Kennedy Sheryl Lynn | Director | 17,135 | 80,535 $ | Sep 30, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 30, 2026 | Howard Eve N | Director | Other | 3,445 | 0.00 | – |
| Sep 30, 2026 | Howell Deneen C | Director | Other | 3,445 | 0.00 | – |
| Sep 30, 2026 | de Sa Paul | Director | Other | 3,445 | 0.00 | – |
| Sep 30, 2026 | Kennedy Sheryl Lynn | Director | Other | 3,445 | 0.00 | – |
| Sep 30, 2026 | Montagner Marc | Director | Other | 3,445 | 0.00 | – |
| Sep 30, 2026 | FERGUSON Lewis H | Director | Other | 3,445 | 0.00 | – |
| Sep 30, 2026 | Brooks Steven D | Director | Other | 3,445 | 0.00 | – |
| Sep 15, 2026 | Kilmer Henry W | VP OF NETWORK STRATEGY | Sell | 2,400 | 9.21 | 22,104 |
| Sep 2, 2026 | Weed Thaddeus Gerard | VICE PRESIDENT, CFO | Sell | 4,850 | 9.37 | 45,445 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 5, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.