Chang John B. - Insider Non-Derivative Transactions at COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI) - (SEC)
Updated on January 3, 2026.
According to recent SEC insider information filed on Dec 1, 2025, Chang John B.'s relationship to COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI) is Officer (VP & CHIEF LEGAL OFFICER), and currently has 79,247 shares of common stock.
The chart below shows the number of shares owned, and the table shows the recent insider transactions.
You can see similar information for other CCOI insiders.
Related Topics: SEC Topic List.
Data Source: SEC.
Chang John B. - Insider Non-Derivative Transactions of CCOI common stock
Chang John B. - Insider Non-Derivative Transactions at CCOI
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| Date | Transaction | No. of Shares | Price Per Share | Shares Owned After Transactions |
|---|---|---|---|---|
| Dec 2, 2025 | Acquisition -- (common stock) | 2400 | 0 | 79247 |
| Jun 3, 2025 | G -- (common stock) | 398 | 0 | 76847 |
| May 14, 2025 | G -- (common stock) | 504 | 0 | 3089 |
| May 14, 2025 | G -- (common stock) | 756 | 0 | 77245 |
| Apr 11, 2025 | G -- (common stock) | 357 | 0 | 78001 |
| Mar 11, 2025 | G -- (common stock) | 357 | 0 | 78358 |
| Mar 6, 2025 | G -- (common stock) | 715 | 0 | 2585 |
| Mar 6, 2025 | G -- (common stock) | 715 | 0 | 78715 |
| Jan 10, 2025 | Acquisition -- (common stock) | 9600 | 0 | 79430 |
| Dec 19, 2024 | G -- (common stock) | 485 | 0 | 935 |
| Dec 19, 2024 | G -- (common stock) | 970 | 0 | 69830 |
| Dec 5, 2024 | G -- (common stock) | 900 | 0 | 70800 |
| Dec 2, 2024 | Acquisition -- (common stock) | 2400 | 0 | 71700 |
| Nov 13, 2024 | Sell -- (common stock) | 2280 | 80.41 | 69300 |
| Sep 13, 2024 | Sell -- (common stock) | 1400 | 71.67 | 71580 |
| Aug 24, 2024 | Sell -- (common stock) | 2055 | 74 | 72980 |
| Feb 2, 2024 | G -- (common stock) | 375 | 0 | 375 |
| Feb 2, 2024 | G -- (common stock) | 375 | 0 | 75035 |
| Jan 4, 2024 | Acquisition -- (common stock) | 9600 | 0 | 45410 |
| Jan 4, 2024 | Acquisition -- (common stock) | 9600 | 0 | 47910 |
| Jan 4, 2024 | Acquisition -- (common stock) | 30000 | 0 | 75410 |
| Jan 4, 2024 | Acquisition -- (common stock) | 30000 | 0 | 77910 |
| Dec 27, 2023 | Sell -- (common stock) | 3550 | 76 | 38310 |
| Dec 22, 2023 | Sell -- (common stock) | 1000 | 74 | 41860 |
| Dec 21, 2023 | G -- (common stock) | 450 | 0 | 450 |
| Dec 21, 2023 | G -- (common stock) | 900 | 0 | 42860 |
| Dec 15, 2023 | Sell -- (common stock) | 500 | 72 | 43760 |
| Dec 12, 2023 | Disposition -- (common stock) | 3000 | 69 | 44260 |
| Dec 2, 2023 | Acquisition -- (common stock) | 2400 | 0 | 47260 |
| May 4, 2023 | Sell -- (common stock) | 2500 | 74 | 42360 |
| May 4, 2023 | Sell -- (common stock) | 2500 | 72 | 44860 |
| Apr 18, 2023 | Sell -- (common stock) | 500 | 70 | 47360 |
| Feb 2, 2023 | Sell -- (common stock) | 2000 | 70 | 47860 |
| Jan 27, 2023 | Sell -- (common stock) | 500 | 68 | 49860 |
| Jan 18, 2023 | Sell -- (common stock) | 1000 | 66 | 50360 |
| Jan 13, 2023 | Sell -- (common stock) | 1500 | 64 | 51360 |
| Jan 4, 2023 | Acquisition -- (common stock) | 9600 | 0 | 52860 |
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