Our senior leadership team brings over 100 years of experience in the tower and related sectors to Vertical Bridge. Our founders and managers were the principal senior officers of Global Tower Partners (GTP), which they grew to become the largest private owner and manager of wireless communication infrastructure in North America prior to its sale for $4.8 billion in October 2013.
  • Marc Ganzi - Executive Chairman

      Marc Ganzi is a successful real estate and telecommunications entrepreneur. In addition to serving as Executive Chairman of Vertical Bridge, he is the co-founder and Chief Executive Officer of Digital Bridge Holdings, LLC. He previously co-founded Global Tower Partners (GTP), an owner and operator of communications, real estate and related companies, where he played an instrumental role in building the business, which was ultimately sold in 2013 for over $4.8 billion.

      Prior to GTP, Ganzi was a consulting partner at Deutsche Bank’s DB Capital Partners overseeing the institution's radio tower sector investments in Latin and North America. His other earlier experience includes Apex Site Management and the U.S. Department of Commerce's Foreign Commercial Service Department.

      Ganzi is a member of Young Presidents' Organization, a Director of Olympus Media, LLC, and a three time finalist for Ernst & Young Entrepreneur of the Year in Florida. He is a graduate of Wharton School of Business at the University Of Pennsylvania.

  • Alex Gellman - Chief Executive Officer and Co-Founder

      Alexander L. Gellman is the Chief Executive Officer of Vertical Bridge, the largest private owner and operator of wireless communications infrastructure in the US.

      Prior to co-founding Vertical Bridge, Mr. Gellman was President and COO of Global Tower Partners, the largest privately-held tower company in the United States. Mr. Gellman was instrumental in the sale of Global Tower Partners to American Tower Corporation in 2013 for over $4.8 billion. Previously, Mr. Gellman has been involved in a number of successful ventures, including Sonitrol Corporation, a leading provider of verified electronic security in North America where he served as President and COO until its sale to Stanley Works.

      Mr. Gellman also co-founded Apex Site Management, the largest third-party manager of wireless and wireline communications sites in the U.S. Apex merged with SpectraSite Communications to create the largest telecommunications site portfolio in the United States. Following the merger, Mr. Gellman served as President and CEO of SpectraSite-Transco Communications, Ltd., a joint venture between SpectraSite and British Gas to develop tower sites in the United Kingdom.

      Mr. Gellman previously served as Vice President - Development and a co-founder of Horizon Cellular Group, a start-up backed by McCaw Cellular to acquire, develop and operate rural cellular franchises in the eastern United States.

      Mr. Gellman earned an MBA in Finance and Accounting from The Wharton School of the University of Pennsylvania, and a BS in Biology from Tufts University.

  • Bernard Borghei - Executive Vice President – Operations and Co-Founder

      Bernard Borghei is the Co-Founder and Executive Vice President, Operations of Vertical Bridge. He is responsible for Vertical Bridge’s daily operations, regulatory compliance, vendor management, engineering services, human resources and emerging technologies.

      Borghei has over 23 years of experience in wireless industries and before co-founding Vertical Bridge, he served as Senior Vice President and Partner at Global Tower Partners (GTP), where he oversaw domestic and international market operations, including a portfolio of more than 6,500 towers and 12,000 managed properties.

      Borghei has also held executive and senior management positions in operations, engineering, sales, supply chain, site development, and customer care at several wireless operators and service providers including SkyBitz, Wireless Facilities, Inc. Western Wireless International, and at Triton PCS where he successfully ran operations across 24 different countries in Europe, the Middle East, Africa, North and South America.

      Bernard has a Bachelor’s degree in electrical engineering from Villanova University and an MBA in global management from the University of Phoenix. He also serves on the Advisory Board for the Villanova School of Engineering. 

      Operations - Click to view other Operations management team members

  • Michael Belski - Executive Vice President – Leasing & Marketing and Co-Founder

      Michael Belski is the Co-Founder and Executive Vice President, Leasing & Marketing of Vertical Bridge. He is responsible for creating deep relationships with clients, working with some of the country’s largest carriers to develop leasing contracts.

      Prior to co-founding Vertical Bridge, Belski was the Senior Vice President of Leasing & Marketing at Global Tower Partners (GTP), where he was responsible for leasing and marketing the company’s portfolio of assets and securing build-to-suit contracts.

      He previously held senior positions at Morrison Hershfield Corporation and SBA Communications Corporation.

  • Michael Romaniw - Chief Financial Officer

      Mike Romaniw is the Chief Financial Officer of Vertical Bridge. He is responsible for all financial aspects of the company including accounting, finance, tax, treasury, budgeting, forecasting, and investor relations.

      Prior to joining Vertical Bridge, Mike was Chief Financial Officer of the Sterling Organization, Senior Vice President of Finance for Parmenter Realty Partners, and held various tax and financial management roles at the AES Corporation. Mike started his career with Ernst & Young and has Master of Business Administration and Master of Taxation degrees from Canisius College, a BA from McMaster University, and is a Certified Public Accountant.

      Finance - Click to view other Finance management team members

  • Bob Paige - Senior Vice President of M&A

      Bob Paige is the Senior Vice President of M&A of Vertical Bridge. Paige is responsible for all portfolio acquisitions, joint ventures and other strategic transactions.

      Prior to joining Vertical Bridge, Paige was a Principal and Telecom M&A Group Head at Brown Brothers Harriman where he led all assignments for companies in the telecommunications industry with a specific focus on the wireline and wireless sector. He also served as the Managing Director at Falkenberg Capital Corporation where he advised wireline and wireless companies in M&A transactions.

      Paige started his career as a telecom lending executive with Northern Telecom and GE Capital.

  • Daniel Marinberg - Senior Vice President and General Counsel

      Dan Marinberg is the Senior Vice President and General Counsel of Vertical Bridge. Marinberg is responsible for legal, regulatory and government affairs, as well as Secretary to the Board of Directors.  

      Prior to joining Vertical Bridge, Marinberg was a partner at top international law firm Greenberg Traurig where his practice focused on real estate including, acquisitions and dispositions of commercial real estate, financings, leasing, development, and joint venture structuring for individual properties and multi-asset portfolios. He also assisted clients with international issues arising from these transactions.

      Legal - Click to view other Legal management team members

  • Johnny Crawford - Senior Vice President of Development

      Johnny Crawford is the Senior Vice President Development of Vertical Bridge. He is responsible for overseeing all sales and delivery of build-to-suit opportunities for the company.

      Prior to joining Vertical Bridge, Crawford was Vice President of Business Development, Network Services at SBA Communications Corporation where he was responsible for sales to SBA’s national customers. Additionally, he has served as Vice President of Engineering and Operations for Airgate PCS, a Sprint PCS affiliate and as Director of Engineering and Operations for Sprint, where he launched one of the first PCS markets. Crawford was also a co-owner of Optima Towers, a South Carolina-based company that owns towers in the Southeast.

      Crawford was recently appointed as a Board Member for Music-Movement.Org, a 501(c) 3 nonprofit organization that develops and funds music centric programs for children and young adults living with Autism.

      Development - Click to view other Development management team members

  • Jim McCulloch - Vice President of Real Estate

      Jim McCulloch is the Vice President of Real Estate of Vertical Bridge. McCulloch is responsible for the development and expansion of Vertical Bridge’s real estate portfolio.

      Prior to joining Vertical Bridge, McCulloch was Vice President of Real Estate for Global Tower Partners (GTP) where he developed the company’s real estate portfolio, and expanded existing landlord relationships.

      His experience also includes serving as partner at DGP Development, a leading provider of Distributed Antenna Systems to hotels and sports stadiums and a successful consulting practice advising buyers, sellers, and owners of commercial real estate on a variety of technology and financial matters. Additionally, he was vice president of Information Technology for Destination Hotels and Resorts.

  • Mark Sanfilippo - Vice President of Information Technology


      Mark Sanfilippo is the Vice President of Information Technology of Vertical Bridge. He is responsible for the strategic integration of enterprise-wide technology as well as creating and executing automated business processes, collaborative portal and business intelligence solutions.

      Prior to joining Vertical Bridge, Sanfilippo was the Vice President of IT Solutions at FirstService Residential, the leading residential property management company in North America. While at FirstService, he was responsible for the implementation of technology programs across the country.

      Sanfilippo received his Bachelor of Information Technology from American InterContinental University.  He also studied Computer Science and Psychology at Florida International University.

  • Buddy Norman - Vice President of Real Estate Development

      Buddy Norman is the Vice President of Real Estate Development of Vertical Bridge. Norman is responsible for all excess real estate leasing and disposition, ground lease amendment negotiations and ground lease buyouts.

      Prior to joining Vertical Bridge, Norman founded and served as President of KW Commercial, one of the largest national commercial real estate brokerage firms in the United States. Under his leadership, KW Commercial expanded to over 1,700 commercial agents in 450 cities completing over $7 billion in transaction volume for 2015. Norman started his commercial real estate career at the Staubach Company where he was promoted to co-managing partner in Southern California.