--- title: "COGENT COMMUNICATIONS HOLDINGS, INC. — Ownership Dossier" canonical: https://whiteintel.dev/entity/be8a0a13-5a8a-5901-9226-36d250ef77ff json: https://whiteintel.dev/api/public/dossier/be8a0a13-5a8a-5901-9226-36d250ef77ff identifier: sec:0001158324 jurisdiction: US risk: High source: WhiteIntel corporate-ownership graph --- # COGENT COMMUNICATIONS HOLDINGS, INC. **Type:** Company **Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us) **Identifier:** `sec:0001158324` **Risk level:** High **Canonical dossier:** https://whiteintel.dev/entity/be8a0a13-5a8a-5901-9226-36d250ef77ff **Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/be8a0a13-5a8a-5901-9226-36d250ef77ff ## Ownership & control ### Owners / controllers - **Montagner Marc** (director) — https://whiteintel.dev/entity/0c2e53bb-9ccc-55e6-be34-19cdac7aa132 - **Kennedy Sheryl Lynn** (director) — https://whiteintel.dev/entity/40e3b1f3-dd43-57af-88e8-6442723c8fb9 - **Howard Eve N** (director) — https://whiteintel.dev/entity/e18bbec9-1150-54b3-82ac-a7179d6ee71c - **FERGUSON Lewis H** (director) — https://whiteintel.dev/entity/9d8378f1-4e90-53e3-a941-6c2fdfe7824b - **de Sa Paul** (director) — https://whiteintel.dev/entity/da31fd87-9308-5bd4-a6c0-5ac3304518f2 - **BROOKS STEVEN D** (director) — https://whiteintel.dev/entity/1f53f935-0ae5-5c16-aadd-981c260b3389 - **Bath Blake** (director) — https://whiteintel.dev/entity/ac25d1e0-02c5-53ee-b3fc-bcf320a72c02 - **FERGUSON Lewis H** (director) — https://whiteintel.dev/entity/9d8378f1-4e90-53e3-a941-6c2fdfe7824b - **Chang John B.** (officer) — https://whiteintel.dev/entity/170f8889-9831-5332-bd3e-bd9c82724d29 - **KILMER HENRY W** (officer) — https://whiteintel.dev/entity/882c6551-6f0a-541b-ad79-498db39a72b4 - **Chang John B.** (officer) — https://whiteintel.dev/entity/170f8889-9831-5332-bd3e-bd9c82724d29 - **SCHAEFFER DAVE** (officer) — https://whiteintel.dev/entity/2a8e03f2-73ae-581f-a32d-b013a5842959 - **BUBECK JAMES** (officer) — https://whiteintel.dev/entity/1d9d3ba1-589d-5593-afb7-8fb9a47766d4 - **WEED THADDEUS GERARD** (officer) — https://whiteintel.dev/entity/ba5cd10a-8a53-5a9f-9d7f-ac03811bf2cd - **Kennedy Sheryl Lynn** (director) — https://whiteintel.dev/entity/40e3b1f3-dd43-57af-88e8-6442723c8fb9 - **BROOKS STEVEN D** (director) — https://whiteintel.dev/entity/1f53f935-0ae5-5c16-aadd-981c260b3389 - **SCHAEFFER DAVE** (officer) — https://whiteintel.dev/entity/2a8e03f2-73ae-581f-a32d-b013a5842959 - **KILMER HENRY W** (officer) — https://whiteintel.dev/entity/882c6551-6f0a-541b-ad79-498db39a72b4 - **BUBECK JAMES** (officer) — https://whiteintel.dev/entity/1d9d3ba1-589d-5593-afb7-8fb9a47766d4 - **WEED THADDEUS GERARD** (officer) — https://whiteintel.dev/entity/ba5cd10a-8a53-5a9f-9d7f-ac03811bf2cd - **Chang John B.** (officer) — https://whiteintel.dev/entity/170f8889-9831-5332-bd3e-bd9c82724d29 - **FERGUSON Lewis H** (director) — https://whiteintel.dev/entity/9d8378f1-4e90-53e3-a941-6c2fdfe7824b - **de Sa Paul** (director) — https://whiteintel.dev/entity/da31fd87-9308-5bd4-a6c0-5ac3304518f2 - **BROOKS STEVEN D** (director) — https://whiteintel.dev/entity/1f53f935-0ae5-5c16-aadd-981c260b3389 - **Kennedy Sheryl Lynn** (director) — https://whiteintel.dev/entity/40e3b1f3-dd43-57af-88e8-6442723c8fb9 - **Howell Deneen C** (director) — https://whiteintel.dev/entity/bd943c0f-1e6e-5897-9562-62edf590cd94 - **Montagner Marc** (director) — https://whiteintel.dev/entity/0c2e53bb-9ccc-55e6-be34-19cdac7aa132 - **Howard Eve N** (director) — https://whiteintel.dev/entity/e18bbec9-1150-54b3-82ac-a7179d6ee71c - **Bath Blake** (director) — https://whiteintel.dev/entity/ac25d1e0-02c5-53ee-b3fc-bcf320a72c02 - **LIEBHABER RICHARD** (director) — https://whiteintel.dev/entity/d41c415c-9431-54ec-a6f7-add016ae97e5 - **GLASSMEYER EDWARD F** (director) — https://whiteintel.dev/entity/1703dc62-c6e2-5eed-97ad-93cba91b748b - **ONEILL TIMOTHY G** (officer) — https://whiteintel.dev/entity/ba4c584d-63a8-540c-8b8a-fe7f2b7e19fd - **OAK IX AFFILIATES FUND LP** (tenpercentowner) — https://whiteintel.dev/entity/eedd7fb3-4201-58d9-b114-dcdf423adacd - **SCHLEIFER MARK A** (officer) — https://whiteintel.dev/entity/2fc5868e-7d1a-58c3-b163-1a2a80073e44 - **BEURY ROBERT N JR** (officer) — https://whiteintel.dev/entity/8687170c-c0b7-5052-98e5-dc228ff5ab3f - **GENERAL BUSINESS FINANCE & INVESTMENTS, LTD.** (other) — https://whiteintel.dev/entity/686b0b94-466a-5f5c-8190-4fa60300ceca - **WEED THADDEUS GERARD** (officer) — https://whiteintel.dev/entity/ba5cd10a-8a53-5a9f-9d7f-ac03811bf2cd - **OAK INVESTMENT PARTNERS IX L P** (tenpercentowner) — https://whiteintel.dev/entity/25fa41d7-8b4e-5483-b964-8da1465c923f - **SCHAEFFER DAVE** (officer) — https://whiteintel.dev/entity/2a8e03f2-73ae-581f-a32d-b013a5842959 - **BROOKS STEVEN D** (director) — https://whiteintel.dev/entity/1f53f935-0ae5-5c16-aadd-981c260b3389 - **PETERSON KENNETH D JR** (director) — https://whiteintel.dev/entity/c06ff0a4-22b6-5982-b0ac-ee14f1efebbf - **BNP EUROPE TE LECOM & MEDIA FUND II LP** (other) — https://whiteintel.dev/entity/3c538a91-ec2d-5c73-9204-1d186603935f - **KUMMER RAYMOND B** (officer) — https://whiteintel.dev/entity/a4e30b8a-381b-58ca-9993-f1f5ef8cd16b - **OAK IX AFFILIATES FUND A LP** (tenpercentowner) — https://whiteintel.dev/entity/09f61c42-aeab-55f9-bf6f-e2c934a6e312 - **OAK MANAGEMENT CORP** (tenpercentowner) — https://whiteintel.dev/entity/ce27e47c-3f4d-514f-aeaa-890f778a3309 - **GLASSMEYER EDWARD F** (tenpercentowner) — https://whiteintel.dev/entity/1703dc62-c6e2-5eed-97ad-93cba91b748b - **WEINGARTEN TIM** (director) — https://whiteintel.dev/entity/4bcf1faa-ee3f-540a-9b6e-d80ec7a0e680 - **BERTRAND JEAN JACQUES** (director) — https://whiteintel.dev/entity/cada64fe-916d-5742-bc0b-4b8eb4d1528e - **MARGALIT EREL N** (other) — https://whiteintel.dev/entity/5f4cf4ab-461d-57ed-9310-e649c95d8f0e - **SCHAEFFER DAVE** (director) — https://whiteintel.dev/entity/2a8e03f2-73ae-581f-a32d-b013a5842959 - **Montagner Marc** (director) — https://whiteintel.dev/entity/0c2e53bb-9ccc-55e6-be34-19cdac7aa132 - **KILMER HENRY W** (officer) — https://whiteintel.dev/entity/882c6551-6f0a-541b-ad79-498db39a72b4 - **FERGUSON Lewis H** (director) — https://whiteintel.dev/entity/9d8378f1-4e90-53e3-a941-6c2fdfe7824b - **Kennedy Sheryl Lynn** (director) — https://whiteintel.dev/entity/40e3b1f3-dd43-57af-88e8-6442723c8fb9 - **Chang John B.** (officer) — https://whiteintel.dev/entity/170f8889-9831-5332-bd3e-bd9c82724d29 - **de Sa Paul** (director) — https://whiteintel.dev/entity/da31fd87-9308-5bd4-a6c0-5ac3304518f2 - **Howard Eve N** (director) — https://whiteintel.dev/entity/e18bbec9-1150-54b3-82ac-a7179d6ee71c - **Howell Deneen C** (director) — https://whiteintel.dev/entity/bd943c0f-1e6e-5897-9562-62edf590cd94 - **HARRIS MARK ANDREW** (officer) — https://whiteintel.dev/entity/05dd1342-3c37-525e-99d7-774d2e12f3ee - **BUBECK JAMES** (officer) — https://whiteintel.dev/entity/1d9d3ba1-589d-5593-afb7-8fb9a47766d4 - **Bath Blake** (director) — https://whiteintel.dev/entity/ac25d1e0-02c5-53ee-b3fc-bcf320a72c02 - **SCHAEFFER DAVE** (tenpercentowner) — https://whiteintel.dev/entity/2a8e03f2-73ae-581f-a32d-b013a5842959 - **Montagner Marc** (officer) — https://whiteintel.dev/entity/0c2e53bb-9ccc-55e6-be34-19cdac7aa132 - **KAPP DAVID ALLEN** (officer) — https://whiteintel.dev/entity/cdc30bdb-be03-5708-92e6-24addd2c3e28 - **DANIELSON JEFFREY S** (officer) — https://whiteintel.dev/entity/4329c729-f294-53e5-92dc-107f184a0cd8 - **O'CONNOR GREG W** (officer) — https://whiteintel.dev/entity/b0b58dc9-5b3e-57bc-84a0-43db1b24abcc - **Chang John B.** (director) — https://whiteintel.dev/entity/170f8889-9831-5332-bd3e-bd9c82724d29 - **WALLACE SEAN R.** (officer) — https://whiteintel.dev/entity/192f7ec9-c221-5cd3-ad01-5b9367841526 - **KATZ CAROLYN** (director) — https://whiteintel.dev/entity/a46135c2-3904-5b1a-b788-4d74279187ad - **Montagner Marc** (other) — https://whiteintel.dev/entity/0c2e53bb-9ccc-55e6-be34-19cdac7aa132 - **SLAGMUYLDER JEAN-MICHEL F.F.** (officer) — https://whiteintel.dev/entity/c21bddba-2a40-5581-b6ff-ccff5879f751 - **ORTEGA ERNEST** (officer) — https://whiteintel.dev/entity/c5533040-a253-57e0-b883-1b007ced45a0 - **MARGALIT EREL N** (director) — https://whiteintel.dev/entity/5f4cf4ab-461d-57ed-9310-e649c95d8f0e - **KARNES JEFFREY** (officer) — https://whiteintel.dev/entity/48299f78-29a9-5945-8347-551173566dcf - **HARRISON R REED** (officer) — https://whiteintel.dev/entity/f7db7416-ebbe-5085-83e1-debe332ddb25 ### UBO chain (walk to the ultimate owner) A **75-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing. --- _This is the markdown-for-agents view of the WhiteIntel dossier for **COGENT COMMUNICATIONS HOLDINGS, INC.**. Human view: https://whiteintel.dev/entity/be8a0a13-5a8a-5901-9226-36d250ef77ff · Structured JSON: https://whiteintel.dev/api/public/dossier/be8a0a13-5a8a-5901-9226-36d250ef77ff._ _Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._