CCOI
COGENT COMMUNICATIONS HOLDINGS, INC. · Transportation & Utilities · Market cap $383.1M
Insiders sold $68K net in the last 90 days ·2 sellers, 0 buyers· latest Form 4 filed Sep 15, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$995K
reported sales (SEC code S)
Unique Insiders
4
in the rolling window
Latest filing
Sep 30, 2026
KILMER HENRY W
COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI) has 52 SEC Form 4 filings (61 transaction rows) in the rolling window, disclosed by 4 distinct insiders. Most recent filing: Sep 30, 2026.
Inside the rolling window, 4 insiders at COGENT COMMUNICATIONS HOLDINGS, INC. reported no open-market purchases and 15 open-market sales totaling $995K. The most active filer is VP OF NETWORK STRATEGY KILMER HENRY W with 5 filings. Insiders have net sold $300K over the trailing 6 months. The most recent open-market filing is a sale of 2,400 shares by VP OF NETWORK STRATEGY KILMER HENRY W, dated Sep 15, 2026, worth $22K.
- Industry:Telecommunications Services
- CEO:David Schaeffer
- Employees:1,833
- HQ:Washington, DC, US
- IPO:2002-02-05
| Source | |||||||
|---|---|---|---|---|---|---|---|
KILMER HENRY WFirst in 3 months | VP OF NETWORK STRATEGY | Sale | 2,400 | $22K | Sep 15 | -19.1% | SEC ↗ |
| VICE PRESIDENT, CFO | Sale | 4,850 | $45K | Sep 3 | -25.1% | SEC ↗ | |
WEED THADDEUS GERARDFirst in 3 months | VICE PRESIDENT, CFO | Sale | 4,850 | $81K | Jun 16 | -53.4% | SEC ↗ |
KILMER HENRY WFirst in 3 months | VP OF NETWORK STRATEGY | Sale | 2,400 | $41K | Jun 15 | -54.5% | SEC ↗ |
| Director | Sale | 2,800 | $57K | May 28 | -62.3% | SEC ↗ | |
| Director | Sale | 3,300 | $54K | May 18 | -56.6% | SEC ↗ | |
KILMER HENRY WFirst in 3 months | VP OF NETWORK STRATEGY | Sale | 2,400 | $56K | Mar 9 | -66.8% | SEC ↗ |
Kennedy Sheryl LynnFirst in 4 months | Director | Sale | 3,300 | $76K | Mar 5 | -67.1% | SEC ↗ |
| VICE PRESIDENT, CFO | Sale | 4,850 | $110K | Mar 5 | -67.1% | SEC ↗ | |
FERGUSON Lewis HFirst in 3 months | Director | Sale | 2,206 | $51K | Mar 5 | -67.1% | SEC ↗ |
WEED THADDEUS GERARDFirst filing | VICE PRESIDENT, CFO | Sale | 7,300 | $175K | Dec 12 | — | SEC ↗ |
| VP OF NETWORK STRATEGY | Sale | 4,800 | $95K | Dec 8 | — | SEC ↗ | |
FERGUSON Lewis HFirst filing | Director | Sale | 4,000 | $81K | Dec 2 | — | SEC ↗ |
KILMER HENRY WFirst filing | VP OF NETWORK STRATEGY | Sale | 2,400 | $0 | Dec 2 | — | SEC ↗ |
Kennedy Sheryl LynnFirst filing | Director | Sale | 2,400 | $51K | Nov 12 | — | SEC ↗ |
Congress trading CCOI 1 all-time
- DRep. Donna ShalalaOther$1,001 - $15,0002019-06-24
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does CCOI have?
COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI) has 52 SEC Form 4 filings (61 transaction rows) in the rolling 365-day window, disclosed by 4 distinct insiders. Most recent filing: Sep 30, 2026.
When was the most recent SEC Form 4 filing for CCOI?
The most recent Form 4 filing for CCOI on Tracefour is dated Sep 30, 2026.
Who is the most active insider at CCOI?
The most active SEC Form 4 filer at CCOI in the rolling window is VP OF NETWORK STRATEGY KILMER HENRY W, with 5 filings.
What is the net insider flow at CCOI over the last 6 months?
Over the trailing 180 days, insiders at CCOI have net sold $300K based on SEC Form 4 disclosures.
What is the total insider buy and sell value at CCOI in the current window?
Inside the rolling window, insiders at CCOI bought $0 and sold $995K based on SEC Form 4 filings.
Can I get alerts for CCOI insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
COGENT COMMUNICATIONS HOLDINGS, INC. is in the Transportation & Utilities sector.