WAVEMAN · COMPANY

CCOI · Cogent Communications Holdings, Inc.

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TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475

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CCOI

Name: COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI) insider trading and ownership data
Creator: WaveMan
License: https://wave-man.com/terms

COGENT COMMUNICATIONS HOLDINGS, INC.

TELECOM · COMMUNICATIONS SERVICES, NEC · CIK 0001158324

FORM 144 · 1☆ WATCH

INSIDER NET · 180D

-$278.2K

open-market buys minus sells, Form 4 codes P and S

INSIDER BUYERS · 180D

CONGRESS BUYERS · 1Y

FUNDS ADDED · QTR

125

13F, latest reported quarter

REVENUE GROWTH

-5.8%

XBRL, annual

NET MARGIN

-18.7%

SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST

INSIDERS

net -$278.2K over 180 days

-$167.7K over 90 days

more than 63% of Telecom

CONGRESS

no member of Congress has reported trading it

FUNDS

125 funds added or opened last quarter

more than 57% of Telecom

REVENUE

-5.8% year over year

below 75% of Telecom

MARGIN

-18.7% net margin

below 68% of Telecom

BUYBACKS

$105.8M repurchased, FY to 2026-03-31

more than 52% of Telecom

SHORT

13.6% of shares outstanding short · 6.4 days to cover · settled 2026-07-31

more than 94% of Telecom

THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET

Insiders are net sellers: -$278.2K across 4 people in 180 days.

125 funds added or opened positions in the latest 13F quarter, of 227 holders.

The year, with the filings on it

Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail

TOTAL 12M RETURN -72.7%

-72.7%12M

INSIDER SELLFORM 144

INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY

Live price

Daily candles from TradingView, on their licence — no filings are marked on this one

WHY THIS NAME IS ON THE DESK

Insiders have filed to sell — before selling.

The record shows a net $278.2K sold by insiders over 180 days, 125 funds added last quarter, $45.4K in planned Form 144 sales. Every figure is a federal filing, dated the day it became public.

Backtest this pattern Open the screener

Same sector, ranked by filing activity

Sector from the SEC's own SIC classification

TMUS ROKU CXDO NXST SHEN SPOK GSAT MDIA ATEX SPIR TSQ SSP

Insider transactions

Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, COGENT COMMUNICATIONS HOLDINGS, INC. insiders sold a net $278.2K of stock across 204 Form 4 purchases and sales, with 0 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-06.

INSIDER

FILED

VALUE

WEED THADDEUS GERARD

VICE PRESIDENT, CFO

SELL

2026-09-02

4,850.0

$45.4K

WEED THADDEUS GERARD

VICE PRESIDENT, CFO

SELL

2026-06-16

4,850.0

$81.4K

KILMER HENRY W

VP OF NETWORK STRATEGY

SELL

2026-06-15

2,400.0

$40.8K

FERGUSON Lewis H

Director

SELL

2026-05-28

2,800.0

$57.0K

Kennedy Sheryl Lynn

Director

SELL

2026-05-14

3,300.0

$53.5K

204 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 199 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders

13F · holdings as of the latest quarter funds have reported

BlackRock, Inc.

7,376,384.0 sh

$102.4M

TURTLE CREEK ASSET MANAGEMENT INC.

4,203,527.0 sh

$58.3M

Park West Asset Management LLC

3,106,339.0 sh

$43.1M

STATE STREET CORP

2,779,367.0 sh

$38.6M

VANGUARD PORTFOLIO MANAGEMENT LLC

2,384,929.0 sh

$33.1M

SCHEDULE 13D/G

No 5%+ ownership filings

Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.

Planned sales · Form 144

Filed before the sale — intent, not a trade

THADDEUS WEED

FILED 2026-09-02

$45.4K

Fund concentration

N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show

Hennessy Focus Fund

$11.2M POSITION · AS OF 2026-04-30

2.3%

State Street(R) SPDR(R) S&P(R) Telecom ETF

$7.4M POSITION · AS OF 2026-03-31

1.8%

Select Telecommunications Portfolio

$2.9M POSITION · AS OF 2026-02-28

1.2%

Invesco S&P SmallCap Utilities & Communication Services ETF

$149.0K POSITION · AS OF 2026-02-28

1.1%

LOGIQ Contrarian Opportunities ETF

$542.1K POSITION · AS OF 2026-02-28

0.9%

ACUITAS US MICROCAP FUND

$456.6K POSITION · AS OF 2026-03-31

0.5%

SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK

Executive pay vs shareholder return · Dave Schaeffer

DEF 14A pay-versus-performance disclosure · both the headline pay and the SEC's mark-to-market figure, beside the return the company delivered and the return of the peer group it chose itself

CEO TOTAL

ACTUALLY PAID

OTHER NEOs AVG

TSR

PEER TSR

2023

$8.8K

$20.5K

$1.3K

+42%

-9%

2022

$10.9K

$1.3K

+0%

-18%

2021

$11.5K

$18.8K

$1.0K

+21%

+12%

2020

$14.1K

$8.4K

$1.2K

-5%

+10%

TAGGED BY THE COMPANY UNDER SEC ITEM 402(v) · RETURN IS CUMULATIVE FROM THE START OF THE DISCLOSURE PERIOD · GREEN WHERE THE COMPANY BEAT ITS OWN PEER GROUP

Fundamentals

Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all

	2025-12	2024-12	2023-12	2022-12
REVENUE	$975.8M	$1.0B	$940.9M	$599.6M
OPERATING INCOME	$-101.1M	$-197.6M	$-129.3M	$114.0M
NET INCOME	$-182.2M	$-204.1M	$1.3B	$5.1M
EPS (DILUTED)	-3.80	-4.28	26.62	0.11
OPERATING CASH FLOW	$-10.6M	$-8.6M	$17.3M	$173.7M
CASH	$148.5M	$198.5M	$75.1M	$223.8M
LONG-TERM DEBT	$1.7B	$1.5B	$950.0M	$950.0M
BUYBACKS	$16.7M	$8.0M	—	—
DIVIDENDS PAID	$150.1M	$189.4M	$181.7M	$169.9M

SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-06 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE