SEC Form 4
Cogent Communications Holdings, Inc. (CCOI) insider trading
In the 12 months to Oct 26, 2026, 4 CCOI insiders reported open-market sales of $995.5K across 15 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $995.5K
- 15 filings · 4 insiders
- Open-market purchases
- $0
- 0 filings
$ excludes 1 trade without a price.
Who traded CCOI, and when
- Sale
CCOI daily close from Oct 27, 2025 to Oct 26, 2026, between $7.30 and $44.14, last $7.48. 15 sale and 0 purchase filings by 4 insiders, marked at their filing dates. Thaddeus Gerard Weed, VICE PRESIDENT, CFO: sold $411.8K across 4 filings, first filed Dec 12, 2025, last Sep 3, 2026. Henry W. Kilmer, VP OF NETWORK STRATEGY: sold $214.0K across 5 filings, first filed Dec 2, 2025, last Sep 15, 2026. Lewis H. FERGUSON, Director: sold $189.2K across 3 filings, first filed Dec 2, 2025, last May 28, 2026. Sheryl Lynn Kennedy, Director: sold $180.6K across 3 filings, first filed Nov 12, 2025, last May 18, 2026.
Largest mark · tap a row for others
Thaddeus Gerard Weed · VICE PRESIDENT, CFO
Sale $175,127
7,300 shares at $23.99 avg
Filed Dec 12, 2025 · traded Dec 11
Close on filing date $23.27
Thaddeus Gerard Weed · VICE PRESIDENT, CFO
VICE PRESIDENT, CFO
$411.8K soldHenry W. Kilmer · VP OF NETWORK STRATEGY
VP OF NETWORK STRATEGY
$214.0K soldLewis H. FERGUSON · Director
Director
$189.2K soldSheryl Lynn Kennedy · Director
Director
$180.6K soldOpen-market trades
15 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Thaddeus Gerard Weed | VICE PRESIDENT, CFO | $411.8K | — | 4 | — | |
| Henry W. Kilmer | VP OF NETWORK STRATEGY | $214.0K | — | 5 | — | |
| Lewis H. FERGUSON | Director | $189.2K | — | 3 | — | |
| Sheryl Lynn Kennedy | Director | $180.6K | — | 3 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Henry W. Kilmer VP OF NETWORK STRATEGY | Sale | 2,400 | $9.21 | $22.1K | 36,200 | |
traded | Thaddeus Gerard Weed VICE PRESIDENT, CFO | Sale | 4,850 | $9.37 | $45.4K | 193,050 | |
traded | Thaddeus Gerard Weed VICE PRESIDENT, CFO | Sale | 4,850 | $16.79 | $81.4K | 197,900 | |
traded | Henry W. Kilmer VP OF NETWORK STRATEGY | Sale | 2,400 | $17.01 | $40.8K | 38,600 | |
traded | Lewis H. FERGUSON Director | Sale | 2,800 | $20.36 | $57.0K | 21,094 | |
traded | Sheryl Lynn Kennedy Director | Sale | 3,300 | $16.22 | $53.5K | 10,245 | |
traded | Henry W. Kilmer VP OF NETWORK STRATEGY | Sale | 2,400 | $23.35 | $56.0K | 41,000 | |
traded | Thaddeus Gerard Weed VICE PRESIDENT, CFO | Sale | 4,850 | $22.63 | $109.8K | 202,750 | |
traded | Lewis H. FERGUSON Director | Sale | 2,206 | $23.03 | $50.8K | 20,449 | |
traded | Sheryl Lynn Kennedy Director | Sale | 3,300 | $22.99 | $75.9K | 10,100 | |
traded | Thaddeus Gerard Weed VICE PRESIDENT, CFO | Sale | 7,300 | $23.99 | $175.1K | 88,200 | |
traded | Henry W. Kilmer VP OF NETWORK STRATEGY | Sale | 4,800 | $19.79 | $95.0K | 33,800 | |
traded | Lewis H. FERGUSON Director | Sale | 4,000 | $20.34 | $81.3K | 19,267 | |
traded | Henry W. Kilmer VP OF NETWORK STRATEGY | Sale | 2,400 | — | — | 38,600 | |
traded | Sheryl Lynn Kennedy Director | Sale | 2,400 | $21.34 | $51.2K | 10,012 |
GET /stocks/filings/vX/form-4?tickers=CCOI&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"CCOI",
"COI"
],
"issuer_cik": "0001158324",
"owner_cik": "0001599812",
"accession_number": "0001599812-26-000008",
"form_type": "4",
"filing_date": "2026-09-15",
"period_of_report": "2026-09-15",
"issuer_name": "COGENT COMMUNICATIONS HOLDINGS, INC.",
"issuer_trading_symbol": "CCOI",
"owner_name": "KILMER HENRY W",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "VP OF NETWORK STRATEGY",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "common stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-15",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2400,
"transaction_price_per_share": 9.21,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 36200,
"transaction_value": 22104.000000000004,
"direct_or_indirect": "D"
},
{
"tickers": [
"CCOI",
"COI"
],
"issuer_cik": "0001158324",
"owner_cik": "0001166978",
"accession_number": "0001166978-26-000009",
"form_type": "4",
"filing_date": "2026-09-03",
"period_of_report": "2026-09-02",
"issuer_name": "COGENT COMMUNICATIONS HOLDINGS, INC.",
"issuer_trading_symbol": "CCOI",
"owner_name": "WEED THADDEUS GERARD",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "VICE PRESIDENT, CFO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "common stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-02",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 4850,
"transaction_price_per_share": 9.3701,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 193050,
"transaction_value": 45444.985,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 46 records
- Grants and awards39 records
- Gifts6 records
- Other1 record
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Cogent Communications Holdings, Inc.'s CEO sold stock?
No. Dave Schaeffer (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is CCOI’s insider data?
These are CCOI Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Track CCOI insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for CCOI every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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