CCOI insider buying and SEC filings, explained
Cogent Communications Holdings, Inc. · CIK 1158324
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$995K
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 15, 2026 | Sale | Henry W. Kilmer (VP of Network Strategy) sold 2,400 shares at $9.21 ($22K). Holdings down 6% to 36,200 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 15, 2026 |
| Sep 2, 2026 | Sale | Thaddeus Gerard Weed (CFO) sold 4,850 shares at $9.37 ($45K). Holdings down 2% to 193,050 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 3, 2026 |
| Jun 16, 2026 | Sale | Thaddeus Gerard Weed (CFO) sold 4,850 shares at $16.79 ($81K). Holdings down 2% to 197,900 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 16, 2026 |
| Jun 15, 2026 | Sale | Henry W. Kilmer (VP of Network Strategy) sold 2,400 shares at $17.01 ($41K). Holdings down 6% to 38,600 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 15, 2026 |
| May 28, 2026 | Sale | Lewis H FERGUSON (Director) sold 2,800 shares at $20.36 ($57K). Holdings down 12% to 21,094 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 28, 2026 |
| May 14, 2026 | Sale | Sheryl Lynn Kennedy (Director) sold 3,300 shares at $16.22 ($54K). Holdings down 24% to 10,245 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 18, 2026 |
| Mar 6, 2026 | Sale | Henry W. Kilmer (VP of Network Strategy) sold 2,400 shares at $23.35 ($56K). Holdings down 6% to 41,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 9, 2026 |
| Mar 5, 2026 | Sale | Sheryl Lynn Kennedy (Director) sold 3,300 shares at $22.99 ($76K). Holdings down 25% to 10,100 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 5, 2026 |
| Mar 5, 2026 | Sale | Lewis H FERGUSON (Director) sold 2,206 shares at $23.03 ($51K). Holdings down 10% to 20,449 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 5, 2026 |
| Mar 5, 2026 | Sale | Thaddeus Gerard Weed (CFO) sold 4,850 shares at $22.63 ($110K). Holdings down 2% to 202,750 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 5, 2026 |
| Dec 11, 2025 | Sale | Thaddeus Gerard Weed (CFO) sold 7,300 shares at $23.99 ($175K). Holdings down 8% to 88,200 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 12, 2025 |
| Dec 8, 2025 | Sale | Henry W. Kilmer (VP of Network Strategy) sold 4,800 shares at $19.79 ($95K). Holdings down 12% to 33,800 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 8, 2025 |
| Dec 2, 2025 | Sale | Lewis H FERGUSON (Director) sold 4,000 shares at $20.34 ($81K). Holdings down 17% to 19,267 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 2, 2025 |
| Nov 11, 2025 | Sale | Sheryl Lynn Kennedy (Director) sold 2,400 shares at $21.34 ($51K). Holdings down 19% to 10,012 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 12, 2025 |
38 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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