Insider · CIK 0001599812
Henry W Kilmer
Files at CCOI (COGENT COMMUNICATIONS HOLDINGS, INC.). First filing Dec 8, 2023, latest Sep 15, 2026.
In brief
Henry W Kilmer files SEC Form 4 as officer at CCOI (COGENT COMMUNICATIONS HOLDINGS, INC.). Since Dec 8, 2023, Henry W Kilmer has reported 0 open-market buys worth $0 and 9 open-market sells worth $1.3M, the latest filed on Sep 15, 2026.
A track record needs three past buys with six months of prices behind them; Henry W Kilmer has 0, so none is measured yet.
The newest scored trade: sold $22k of CCOI on Sep 15, 2026, filed Sep 15, 2026, scored 23 (weak). In the last 12 months: 0 buys worth $0 and 4 sells worth $214k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
CCOI: COGENT COMMUNICATIONS HOLDINGS, INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 23Weak | COGENT COMMUNICATIONS HOLDINGS, INC. | $22k 2,400 shares | -6% | - | |
| 29Weak | COGENT COMMUNICATIONS HOLDINGS, INC. | $41k 2,400 shares | -6% | +14% from low-68% from high | |
| 37Weak | COGENT COMMUNICATIONS HOLDINGS, INC. | $56k 2,400 shares | -6% | +39% from low-66% from high | |
| 45Moderate | COGENT COMMUNICATIONS HOLDINGS, INC. | $95k 4,800 shares | -12% | +27% from low-73% from high | |
| 32Weak | COGENT COMMUNICATIONS HOLDINGS, INC. | $89k 2,400 shares | -6% | +24% from low-53% from high | |
| 40Moderate | COGENT COMMUNICATIONS HOLDINGS, INC. | $115k 2,400 shares | -6% | +6% from low-41% from high | |
| 41Moderate | COGENT COMMUNICATIONS HOLDINGS, INC. | $174k 2,400 shares | -6% | - | |
| 50Moderate | COGENT COMMUNICATIONS HOLDINGS, INC. | $363k 4,800 shares | -12% | - | |
| 50Moderate | COGENT COMMUNICATIONS HOLDINGS, INC. | $326k 4,800 shares | -14% | +31% from low-4% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Jun 9, 2026 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | 2,400 0.00% of outstanding | $42k | Jun 9, 2026 | none |
| Mar 5, 2026 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | 2,400 0.00% of outstanding | $55k | Mar 5, 2026 | $95k |
| Dec 3, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | 4,800 0.01% of outstanding | $96k | Dec 3, 2025 | $89k |
| Sep 4, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | 2,400 0.00% of outstanding | $88k | Sep 4, 2025 | $115k |
| Jun 3, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | 2,400 0.00% of outstanding | $111k | Jun 3, 2025 | $174k |
| Mar 4, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | 2,400 0.00% of outstanding | $172k | Mar 4, 2025 | $363k |
| Dec 4, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | 4,800 0.01% of outstanding | $381k | Dec 4, 2024 | none |
| Dec 7, 2023 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | 4,800 0.01% of outstanding | $326k | Dec 7, 2023 | none |
Transactions
Every row this insider has filed, 15 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 15, 2026 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | -2,400 | $9.21 | $22k | 36,200 | 28 d ago |
| Jun 15, 2026 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | -2,400 | $17.01 | $41k | 38,600 | Jun 15, 2026 |
| Mar 6, 2026 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | -2,400 | $23.35 | $56k | 41,000 | Mar 9, 2026 |
| Dec 31, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | AGrant or award common stock | +9,600 | $0.00 | $0 | 43,400 | Jan 5, 2026 |
| Dec 8, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | -4,800 | $19.79 | $95k | 33,800 | Dec 8, 2025 |
| Dec 1, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | +2,400 | $0.00 | $0 | 38,600 | Dec 2, 2025 |
| Sep 5, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | -2,400 | $36.99 | $89k | 36,200 | Sep 5, 2025 |
| Jun 6, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | -2,400 | $47.95 | $115k | 38,600 | Jun 9, 2025 |
| Dec 1, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | AGrant or award common stock | +2,400 | $0.00 | $0 | 38,600 | Jun 9, 2025 |
| Mar 7, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | -2,400 | $72.57 | $174k | 41,000 | Mar 10, 2025 |
| Jan 9, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | AGrant or award common stock | +9,600 | $0.00 | $0 | 43,400 | Jan 13, 2025 |
| Dec 12, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | -4,800 | $75.61 | $363k | 33,800 | Dec 13, 2024 |
| Dec 1, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | +2,400 | $0.00 | $0 | 38,600 | Dec 4, 2024 |
| Dec 7, 2023 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | -4,800 | $67.94 | $326k | 28,800 | Dec 8, 2023 |
| Dec 1, 2023 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | AGrant or award common stock | +2,400 | $0.00 | $0 | 33,600 | Dec 1, 2023 |
Questions about Henry W Kilmer
Answered from the filings on this page, as of the latest one.
Is Henry W Kilmer buying or selling?
In the last 12 months Henry W Kilmer reported 0 open-market buys worth $0 and 4 open-market sells worth $214k on SEC Form 4; the latest was sold $22k of CCOI on Sep 15, 2026. Grants, option exercises and tax withholding are not counted.
How did Henry W Kilmer's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Henry W Kilmer has 0.
Where does Henry W Kilmer file Form 4?
Henry W Kilmer has filed Form 4 at CCOI (COGENT COMMUNICATIONS HOLDINGS, INC.) as VP OF NETWORK STRATEGY. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.