List of insiders holdings for COGENT COMMUNICATIONS HOLDINGS, INC.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- 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>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | BROOKS STEVEN D BCP CAPITAL QPF L.P. BCP CAPITAL L.P. BCP AFFILIATES FUND LLC BCP GENERAL LLC BROADVIEW BCPSBS FUND LP BCI HOLDINGS LP BV HOLDINGS LLP BACHMANN STEPHEN J DENINGER PAUL F Director 10% Owner | 2005-03-15 20:02:36 | 43,330,646 0 | 43,330,646 | Form 13D |
| 2 | MARGALIT EREL N JERUSALEM VENTURE PARTNERS IV LP JERUSALEM VENTURE PARTNERS IV A LP JERUSALEM VENTURE PARTNERS ENTREPRENEURS FUND IV LP JERUSALEM VENTURE PARTNERS IV ISRAEL LP JERUSALEM PARTNERS IV LP JERUSALEM PARTNERS IV - VENTURE CAPITAL LP JVP CORP IV DIRECTOR & 10% OWNER Director | 2006-11-17 18:39:09 | 2,461,805 0 | 2,461,805 | Form 13D |
| 3 | WEI JAMES WEINGARTEN TIM WORLDVIEW TECHNOLOGY PARTNERS III LP 10% Owner | 2005-02-16 12:32:43 | 1,932,131 0 | 1,932,131 | Form 4 |
| 4 | SCHAEFFER DAVE CHAIRMAN, CEO, AND PRESIDENT | 2026-05-04 16:22:31 | 609,143 1,258,990 | 1,868,133 | Form 4 |
| 5 | Cisco Systems Capital CORP CISCO SYSTEMS INC 10% Owner | 2006-02-14 15:56:02 | 1,712,293 0 | 1,712,293 | Form 13G |
| 6 | WEI JAMES WEINGARTEN TIM WORLDVIEW TECHNOLOGY PARTNERS IV LP 10% Owner | 2006-11-20 15:44:39 | 1,406,902 0 | 1,406,902 | Form 13D |
| 7 | MARGALIT EREL N JERUSALEM VENTURE PARTNERS III LP JERUSALEM VENTURE PARTNERS ENTREPRENEUR FUND III LP JERUSALEM VENTURE PARTNERS III ISRAEL LP JERUSALEM PARTNERS III LP JERUSALEM VENTURE PARTNERS III ISRAEL MANAGEMENT CO LTD JERUSALEM VENTURE PARTNERS CORP DIRECTOR & 10% OWNER Director | 2005-02-17 11:56:26 | 1,274,884 0 | 1,274,884 | Form 4 |
| 8 | WAGNER BRUCE THOMAS VP of Sales | 2004-02-19 11:04:47 | 260,561 0 | 260,561 | Form 4 |
| 9 | WEED THADDEUS GERARD VICE PRESIDENT, CFO | 2026-09-03 09:45:23 | 193,050 0 | 193,050 | Form 4 |
| 10 | Chang John B. VP & CHIEF LEGAL OFFICER | 2026-01-05 16:26:30 | 188,847 1,870 | 190,717 | Form 4 |
| 11 | Harrison R Reed President & COO | 2009-09-10 16:36:54 | 138,119 0 | 138,119 | Form 4 |
| 12 | Harris Mark Andrew VP & Chief Revenue Officer | 2026-01-05 16:27:17 | 110,168 0 | 110,168 | Form 4 |
| 13 | Montagner Marc Director | 2026-09-30 18:29:45 | 103,287 0 | 103,287 | Form 4 |
| 14 | Karnes Jeffrey VP Sales & CRO | 2013-05-02 09:45:30 | 72,218 0 | 72,218 | Form 4 |
| 15 | LIEBHABER RICHARD Director | 2019-10-02 11:14:19 | 0 67,845 | 67,845 | Form 4 |
| 16 | BROOKS STEVEN D Director | 2026-09-30 18:22:57 | 62,138 0 | 62,138 | Form 4 |
| 17 | KUMMER RAYMOND B CTO Emeritus | 2023-01-04 14:06:27 | 60,000 0 | 60,000 | Form 4 |
| 18 | BUBECK JAMES CHIEF REVENUE OFFICER | 2025-06-06 09:16:12 | 55,142 0 | 55,142 | Form 4 |
| 19 | Thrasher Warren VP Global Customer Net Ops | 2005-10-28 16:34:34 | 48,737 0 | 48,737 | Form 4 |
| 20 | BEURY ROBERT N JR VP & Chief Legal Officer | 2019-05-01 17:47:15 | 41,440 0 | 41,440 | Form 4 |
| 21 | Ortega Ernest Chief Revenue Officer | 2015-09-17 09:29:50 | 38,800 0 | 38,800 | Form 4 |
| 22 | de Sa Paul Director | 2026-09-30 18:24:01 | 37,237 0 | 37,237 | Form 4 |
| 23 | KILMER HENRY W VP OF NETWORK STRATEGY | 2026-09-15 17:50:16 | 36,200 0 | 36,200 | Form 4 |
| 24 | Howell Deneen C Director | 2026-09-30 18:27:42 | 35,775 0 | 35,775 | Form 4 |
| 25 | ONEILL TIMOTHY G VP Construction | 2021-06-03 09:19:11 | 33,600 0 | 33,600 | Form 4 |
| 26 | Howard Eve N Director | 2026-09-30 18:26:34 | 30,751 0 | 30,751 | Form 4 |
| 27 | Wallace Sean Robert VP, CFO & Treasurer | 2022-03-03 11:06:33 | 29,225 0 | 29,225 | Form 4 |
| 28 | WEINGARTEN TIM Director | 2019-10-03 11:59:40 | 28,111 0 | 28,111 | Form 4 |
| 29 | FERGUSON Lewis H Director | 2026-09-30 18:24:56 | 27,984 0 | 27,984 | Form 4 |
| 30 | GLASSMEYER EDWARD F OAK MANAGEMENT CORP OAK INVESTMENT PARTNERS IX L P OAK IX AFFILIATES FUND LP OAK IX AFFILIATES FUND A LP Director 10% Owner | 2007-02-14 14:41:18 | 17,899 0 | 17,899 | Form 13G |
| 31 | Kennedy Sheryl Lynn Director | 2026-09-30 18:28:56 | 17,135 0 | 17,135 | Form 4 |
| 32 | O'Connor Greg W VP, CHIEF OPERATING OFFICER | 2023-05-03 15:14:29 | 16,000 0 | 16,000 | Form 4 |
| 33 | Danielson Jeffrey S VP Infrastructure | 2023-08-03 14:41:26 | 16,000 0 | 16,000 | Form 3 |
| 34 | KATZ CAROLYN Director | 2021-10-01 09:36:09 | 15,750 0 | 15,750 | Form 4 |
| 35 | GLASSMEYER EDWARD F Director | 2007-01-10 09:14:39 | 3,787 11,250 | 15,037 | Form 4 |
| 36 | Bath Blake Director | 2025-03-31 17:17:50 | 12,606 0 | 12,606 | Form 4 |
| 37 | PETERSON KENNETH D JR Director | 2007-03-23 10:40:03 | 11,250 0 | 11,250 | Form 4 |
| 38 | Slagmuylder Jean-Michel F.F. Acting Chief Financial Officer | 2020-03-19 11:40:30 | 9,141 0 | 9,141 | Form 3 |
| 39 | Kapp David Allen VP & CHIEF TECHNICAL OFFICER | 2023-08-14 16:15:09 | 6,600 0 | 6,600 | Form 4 |
| 40 | LEE HELEN HEYOUNG CFO | 2003-10-14 15:16:30 | 6,201 0 | 6,201 | Form 4 |
| 41 | MARGALIT EREL N Director | 2013-07-03 13:42:21 | 2,500 0 | 2,500 | Form 4 |
| 42 | SCHLEIFER MARK A VP of IP Engineering | 2011-12-05 11:20:42 | 0 0 | 0 | Form 4 |
| 43 | BERTRAND JEAN JACQUES BNP EUROPE TE LECOM & MEDIA FUND II LP General Business Finance & Investments Ltd. Director | 2007-06-27 12:14:12 | 0 0 | 0 | Form 13D |
| 44 | CARUS MICHAEL Director | 2003-10-30 16:52:47 | 0 0 | 0 | Form 3 |