Alexander Gellman
Consultant / Advisor at DIGITALBRIDGE GROUP, INC.
Profile
Alexander L.
Gellman is the founder of Vertical Bridge REIT LLC, founded in 2014, where he holds the title of Executive Chairman.
He was also the founder of Apex Site Management, Inc., founded in 1995, where he held the title of Chief Executive Officer until 2008.
Additionally, he is the founder of Vertical Bridge Holdings LLC, founded in 2014, where he holds the title of President & Chief Executive Officer.
Mr. Gellman is also the founder of Horizon Cellular Telephone Co. LP.
His current job positions include Chairman at The Wireless Infrastructure Association since 2021, Senior Advisor at DigitalBridge Group, Inc., and Senior Advisor at Digital Colony Management LLC.
His former job positions include President & Chief Executive Officer at SpectraSite Transco Communications SAS, CIG Wireless Corp., and Global Tower LLC.
He also served as President & Chief Operating Officer at Sonitrol Corp.
In terms of education, Mr. Gellman completed his undergraduate studies at Tufts University and earned an MBA from The Wharton School of the University of Pennsylvania.
Alexander Gellman active positions
| Companies | Position | Start |
|---|---|---|
| DIGITALBRIDGE GROUP, INC. | Consultant / Advisor | - |
Vertical Bridge Holdings LLC
 Vertical Bridge Holdings LLC Specialty TelecommunicationsCommunications Vertical Bridge Holdings, LLC operates as a wireless communication infrastructure leasing company. It owns, operates and manages telecommunications towers, rooftops and site locations. The company was founded by Alexander L. Gellman, Bernard A. Borghei and Michael J. Belski in 2014 and is headquartered in Boca Raton, FL. | Chief Executive Officer | 01/01/2014 |
The Wireless Infrastructure Association
 The Wireless Infrastructure Association Miscellaneous Commercial ServicesCommercial Services The Wireless Infrastructure Association represents companies involved in the development, building, ownership, and operation of wireless infrastructure in the United States. The non-profit company is based in Alexandria, VA. Patrick Halley has been the CEO of the company since 2022. Its members include wireless carriers, infrastructure providers, and professional services firms that collectively own and operate over 135,000 telecommunications facilities worldwide. | Chairman | 17/05/2023 |
Digital Colony Management LLC
 Digital Colony Management LLC Investment ManagersFinance Digital Colony Management LLC (Digital Colony Management) is a Private Equity and Venture Capital firm, a subsidiary of Colony Capital, Inc. founded in 2018. The firm is headquartered in Boca Raton. | Consultant / Advisor | - |
Vertical Bridge REIT LLC
 Vertical Bridge REIT LLC Real Estate Investment TrustsFinance Vertical Bridge REIT LLC is a private company that acts as a Real Estate Investment Trust/REIT. The company is based in Boca Raton, FL. The company was founded in 2014 by Michael J. Belski, Bernard A. Borghei, Alexander L. Gellman. Ronald G. Bizick has been the CEO of the company since 2023. | Founder | 01/01/2014 |
Former positions of Alexander Gellman
| Companies | Position | End |
|---|---|---|
Apex Site Management, Inc.
 Apex Site Management, Inc. Real Estate DevelopmentFinance Apex Site Management, Inc., was a full service real estate management and consulting company specializing in negotiating telecommunication access and transmitting agreements between property owners and telecommunications companies. The firm was located in Conshohocken, PA. | Chief Executive Officer | 18/01/2010 |
Sonitrol Corp.
 Sonitrol Corp. Miscellaneous Commercial ServicesCommercial Services Sonitrol Corp. engages in manufacturing and marketing of electronic security products for commercial, industrial and institutional clients in North America. It offers audio intrusion detection systems; access control systems; video surveillance solutions; and fire detection products, including smoke and heat detection, water flow and sprinkler monitoring, temperature monitoring, elevator recall, voice evacuation system, and duct detection solutions. The company was founded by Robert W. Baxter on June 16, 1960 and is headquartered in Berwyn, PA. | President | 01/01/2008 |
| CIG WIRELESS CORP | Chief Executive Officer | - |
Horizon Cellular Telephone Co. LP
 Horizon Cellular Telephone Co. LP Wireless TelecommunicationsCommunications Horizon Cellular Telephone Co. LP owns and operates cellular telephone systems. The private company is based in Malvern, PA and has subsidiaries in the United States. The company was founded by Alexander L. Gellman. | Founder | - |
| ░░░░░░░░░░░ ░░░░░░░ ░░░░░░░░░░░░░░ ░░░ | ░░░░░ ░░░░░░░░░ ░░░░░░░ | - |
Training of Alexander Gellman
| Tufts University | Undergraduate Degree |
| The Wharton School of the University of Pennsylvania | Masters Business Admin |
Experiences
Positions held
Connections
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Listed companies | 1 |
|---|---|
| DIGITALBRIDGE GROUP, INC. | Finance |
| Private companies | 10 |
|---|---|
Horizon Cellular Telephone Co. LP
Horizon Cellular Telephone Co. LP Wireless TelecommunicationsCommunications Horizon Cellular Telephone Co. LP owns and operates cellular telephone systems. The private company is based in Malvern, PA and has subsidiaries in the United States. The company was founded by Alexander L. Gellman. | Communications |
Vertical Bridge REIT LLC
Vertical Bridge REIT LLC Real Estate Investment TrustsFinance Vertical Bridge REIT LLC is a private company that acts as a Real Estate Investment Trust/REIT. The company is based in Boca Raton, FL. The company was founded in 2014 by Michael J. Belski, Bernard A. Borghei, Alexander L. Gellman. Ronald G. Bizick has been the CEO of the company since 2023. | Finance |
SpectraSite Transco Communications SAS
 SpectraSite Transco Communications SAS Wireless TelecommunicationsCommunications Part of SpectraSite Communications, Inc., SpectraSite Transco Communications SAS provides wireless infrastructure solutions. The company is based in Paris, France. | Communications |
Sonitrol Corp.
Sonitrol Corp. Miscellaneous Commercial ServicesCommercial Services Sonitrol Corp. engages in manufacturing and marketing of electronic security products for commercial, industrial and institutional clients in North America. It offers audio intrusion detection systems; access control systems; video surveillance solutions; and fire detection products, including smoke and heat detection, water flow and sprinkler monitoring, temperature monitoring, elevator recall, voice evacuation system, and duct detection solutions. The company was founded by Robert W. Baxter on June 16, 1960 and is headquartered in Berwyn, PA. | Commercial Services |
Apex Site Management, Inc.
Apex Site Management, Inc. Real Estate DevelopmentFinance Apex Site Management, Inc., was a full service real estate management and consulting company specializing in negotiating telecommunication access and transmitting agreements between property owners and telecommunications companies. The firm was located in Conshohocken, PA. | Finance |
Global Tower LLC
 Global Tower LLC Specialty TelecommunicationsCommunications Global Tower LLC owns, manages and master leases antenna sites on towers and commercial real estate rooftops. The company was founded on September 8, 2003 and is headquartered in Boston, MA. | Communications |
The Wireless Infrastructure Association
The Wireless Infrastructure Association Miscellaneous Commercial ServicesCommercial Services The Wireless Infrastructure Association represents companies involved in the development, building, ownership, and operation of wireless infrastructure in the United States. The non-profit company is based in Alexandria, VA. Patrick Halley has been the CEO of the company since 2022. Its members include wireless carriers, infrastructure providers, and professional services firms that collectively own and operate over 135,000 telecommunications facilities worldwide. | Commercial Services |
CIG Wireless Corp.
 CIG Wireless Corp. Specialty TelecommunicationsCommunications CIG Wireless Corp. develops, operates and owns wireless and broadcast communication towers in the United States. Its business consists of leasing antenna space on multi-tenant communication sites to wireless service providers. The company was founded on 12 February, 2008 and is headquartered in Wellington, FL. | Communications |
Vertical Bridge Holdings LLC
Vertical Bridge Holdings LLC Specialty TelecommunicationsCommunications Vertical Bridge Holdings, LLC operates as a wireless communication infrastructure leasing company. It owns, operates and manages telecommunications towers, rooftops and site locations. The company was founded by Alexander L. Gellman, Bernard A. Borghei and Michael J. Belski in 2014 and is headquartered in Boca Raton, FL. | Communications |
Digital Colony Management LLC
Digital Colony Management LLC Investment ManagersFinance Digital Colony Management LLC (Digital Colony Management) is a Private Equity and Venture Capital firm, a subsidiary of Colony Capital, Inc. founded in 2018. The firm is headquartered in Boca Raton. | Finance |
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