Cogent Communications Holdings, Inc. (CCOI)
Nasdaq: CCOI · Communications Services, NEC · Washington, DC · filing with the SEC since 2001
Grade5.6
◀ Past 7.8● Present 5.7▶ Future 4.1
Who owns Cogent Communications Holdings, Inc.
As filed with the SECHolders of 5% or more
4
Turtle Creek Asset Management Inc. holds 8.2% of Common Stock, as its SCHEDULE 13G/A filed Feb 17, 2026 says.
Directors and officers
12
report now, of 25 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
Turtle Creek Asset Management Inc.
SCHEDULE 13G/A · filed Feb 17, 2026 · Common Stock · 9.4% in Nov 14, 2025
Blackrock, Inc.
SCHEDULE 13G/A · filed Oct 5, 2026 · Common Stock · 14.4% in Jan 23, 2026
Park West Asset Management LLC
SCHEDULE 13G/A · filed Jun 17, 2026 · COMMON STOCK, PAR VALUE $0.001 PER SHARE · 5.1% in May 22, 2026
State Street Corporation
SCHEDULE 13G · filed Aug 7, 2026 · COMMON STOCK
Vanguard Portfolio Management
SCHEDULE 13G/A · filed Jul 31, 2026 · Common Stock · reported falling below 5%, from 5.57% in Apr 29, 2026
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%
What CCOI reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Cogent Infrastructure, Inc.
An entity · legal entity · owns, named in the 10-K filed Feb 20, 2026
Wireline Network Holdings LLC
A company bought · acquisition · owns, named in the 10-K filed Feb 20, 2026
102 subsidiaries in 59 countries, from the list filed with the 10-K filed Feb 20, 2026.
Insider tradesForm 4
15sales
0purchases
0sales on a scheduled plan
4people selling
$1.0Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window4 of 25 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Weed Thaddeus Gerard | VICE PRESIDENT, CFO | 4 | $400,000 | 0 | 0 | $0 |
| Kilmer Henry W | VP OF NETWORK STRATEGY | 5 | $200,000 | 0 | 0 | $0 |
| Ferguson Lewis H | director | 3 | $200,000 | 0 | 0 | $0 |
| Kennedy Sheryl Lynn | director | 3 | $200,000 | 0 | 0 | $0 |