Insider · CIK 0001775672
John B. Chang
Files at CCOI (COGENT COMMUNICATIONS HOLDINGS, INC.). First filing Nov 12, 2024, latest Nov 12, 2024.
John B. Chang files SEC Form 4 as officer at CCOI (COGENT COMMUNICATIONS HOLDINGS, INC.). Since Nov 12, 2024, John B. Chang has reported 0 open-market buys worth $0 and 1 open-market sell worth $183k, the latest filed on Nov 12, 2024.
A track record needs three past buys with six months of prices behind them; John B. Chang has 0, so none is measured yet.
The newest scored trade: sold $183k of CCOI on Nov 12, 2024, filed Nov 12, 2024, scored 42 (moderate).
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 |
|---|---|---|---|---|---|
| 42Moderate | COGENT COMMUNICATIONS HOLDINGS, INC. | $183k 2,280 shares | -3% | - |
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 |
|---|---|---|---|---|---|
| Nov 12, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | 2,280 0.00% of outstanding | $189k | Nov 12, 2024 | $252k |
Transactions
Every row this insider has filed, 17 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | AGrant or award common stock | +9,600 | $0.00 | $0 | 88,847 | Jan 5, 2026 |
| Dec 31, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | AGrant or award common stock | +100,000 | $0.00 | $0 | 188,847 | Jan 5, 2026 |
| Dec 1, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | AGrant or award common stock | +2,400 | $0.00 | $0 | 79,247 | Dec 2, 2025 |
| Jun 2, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stock | -398 | $0.00 | $0 | 76,847 | Jun 3, 2025 |
| May 13, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stock | -756 | $0.00 | $0 | 77,245 | May 15, 2025 |
| May 13, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stockindirect: By minor children | +504 | $0.00 | $0 | 3,089 | May 15, 2025 |
| Apr 10, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stock | -357 | $0.00 | $0 | 78,001 | Apr 11, 2025 |
| Mar 10, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stock | -357 | $0.00 | $0 | 78,358 | Mar 12, 2025 |
| Mar 5, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stock | -715 | $0.00 | $0 | 78,715 | Mar 7, 2025 |
| Mar 5, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stockindirect: By minor children | +715 | $0.00 | $0 | 2,585 | Mar 7, 2025 |
| Jan 9, 2025 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | AGrant or award common stock | +9,600 | $0.00 | $0 | 79,430 | Jan 13, 2025 |
| Dec 18, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stock | -970 | $0.00 | $0 | 69,830 | Dec 19, 2024 |
| Dec 18, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stockindirect: By minor children | +485 | $0.00 | $0 | 935 | Dec 19, 2024 |
| Dec 18, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stockindirect: By minor children | +485 | $0.00 | $0 | 935 | Dec 19, 2024 |
| Dec 4, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | GGift common stock | -900 | $0.00 | $0 | 70,800 | Dec 6, 2024 |
| Dec 1, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | AGrant or award common stock | +2,400 | $0.00 | $0 | 71,700 | Dec 3, 2024 |
| Nov 12, 2024 | CCOI COGENT COMMUNICATIONS HOLDINGS, INC. | SOpen-market sale common stock | -2,280 | $80.41 | $183k | 69,300 | Nov 12, 2024 |
Questions about John B. Chang
Answered from the filings on this page, as of the latest one.
Is John B. Chang buying or selling?
Not in the last 12 months. John B. Chang's latest open-market trade on SEC Form 4 was sold $183k of CCOI on Nov 12, 2024.
How did John B. Chang's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and John B. Chang has 0.
Where does John B. Chang file Form 4?
John B. Chang has filed Form 4 at CCOI (COGENT COMMUNICATIONS HOLDINGS, INC.) as VP & CHIEF LEGAL OFFICER. 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.