Form 4 for CCOI COGENT COMMUNICATIONS HOLDINGS, INC.
Accepted 2026-09-15 17:50:16 ET · period of report 2026-09-15 · accession 0001599812-26-000008 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-15 17:50 | 2026-09-15 | CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S - Sale | $9.21 | -2,400 | 36.2K | -6% | -$22.1K |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | common stock | 2026-09-15 | S | D | 2,400 | $9.21 | 36,200 | D | — | — |