Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>

Common stock purchase or sale:
Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
2022-11-16 Sale | 2022-11-17 1:56 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 4,800 | $58.01 | $278,445 | 50,400 (Direct) | View |
2021-08-02 Sale | 2021-08-03 4:43 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 3,954 | $78.23 | $309,302 | 43,200 (Direct) | View |
2021-07-16 Sale | 2021-07-19 4:31 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO & VP Optical Transport | 846 | $78.24 | $66,191 | 47,154 (Direct) | View |
2021-07-02 Sale | 2021-07-02 3:28 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO & VP Optical Transport | 4,800 | $76.14 | $365,484 | 48,000 (Direct) | View |
2021-06-07 Sale | 2021-06-07 4:11 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO & VP Optical Transport | 2,400 | $77 | $184,812 | 52,800 (Direct) | View |
2020-03-03 Sale | 2020-03-04 4:36 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 4,800 | $81.22 | $389,873 | 43,200 (Direct) | View |
2019-12-04 Sale | 2019-12-04 1:22 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 3,000 | $61.92 | $185,764 | 38,400 (Direct) | View |
2019-06-10 Sale | 2019-06-10 5:11 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 2,400 | $61.24 | $146,966 | 41,400 (Direct) | View |
2019-06-04 Sale | 2019-06-04 4:13 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 3,000 | $57.05 | $171,165 | 43,800 (Direct) | View |
2019-05-22 Sale | 2019-05-22 5:05 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 2,440 | $58.4 | $142,496 | 46,800 (Direct) | View |
2019-04-04 Sale | 2019-04-05 3:21 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 3,000 | $56.1 | $168,300 | 39,640 (Direct) | View |
2019-03-20 Sale | 2019-03-21 2:26 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 3,000 | $52.3 | $156,896 | 43,640 (Direct) | View |
2019-03-15 Sale | 2019-03-15 5:02 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 3,000 | $51 | $153,000 | 46,640 (Direct) | View |
2018-06-19 Sale | 2018-06-19 4:19 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 2,100 | $54.76 | $114,988 | 49,640 (Direct) | View |
2018-06-15 Sale | 2018-06-18 11:32 am | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 3,000 | $53.78 | $161,333 | 51,740 (Direct) | View |
2018-06-06 Sale | 2018-06-06 3:57 pm | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 3,000 | $52.67 | $157,997 | 54,740 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
2023-01-03 Option Award | 2023-01-04 2:06 pm | N/A N/A | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO Emeritus | 7,200 | $0 | 60,000 (Direct) | View |
2022-12-01 Option Award | 2022-12-01 10:49 am | N/A N/A | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 2,400 | $0 | 52,800 (Direct) | View |
2022-01-03 Option Award | 2022-01-05 4:20 pm | N/A N/A | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 9,600 | $0 | 55,200 (Direct) | View |
2021-12-01 Option Award | 2021-12-01 09:52 am | N/A N/A | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO & VP Optical Transport | 2,400 | $0 | 45,600 (Direct) | View |
2021-02-24 Option Award | 2021-02-25 5:27 pm | N/A N/A | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 9,600 | $0 | 55,200 (Direct) | View |
2020-12-01 Option Award | 2020-12-02 5:09 pm | N/A N/A | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO & VP Optical Transport | 2,400 | $0 | 45,600 (Direct) | View |
2020-02-14 Option Award | 2020-02-18 3:19 pm | N/A N/A | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 9,600 | $0 | 48,000 (Direct) | View |
2019-05-01 Option Award | 2019-05-01 6:02 pm | N/A N/A | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 9,600 | $0 | 49,240 (Direct) | View |
2019-04-05 Gift | 2019-04-05 3:21 pm | N/A N/A | COGENT COMMUNICATIONS HOLDINGS INC. | CCOI | KUMMER RAYMOND B CTO; VP Optical Transport | 1,000 | $0 | 39,640 (Direct) | View |