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Senior Management

GTP executives are leaders in wireless industry organizations:

  • Florida Wireless Association (FWA) - Mike Belski, GTP's Vice President of Leasing & Marketing, is president of this trade organization.  Over the last seven years, FWA has donated in excess of $260,000 to worthy charities.

Alexander L. Gellman, President and COO

Mr. Gellman has served as the President and Chief Operating Officer of GTP since February 2009 and is responsible for all aspects of the day-to-day operations of the Company.

Mr. Gellman has enjoyed a successful career starting and/or managing private equity-backed ventures. Prior to joining GTP, from 2004 to 2008, Mr. Gellman was President and COO of Sonitrol Corporation, a leading provider of verified electronic security in the United States and Canada. Sonitrol was acquired in 2004 from Tyco International and sold in 2008 to The Stanley Works. Prior to Sonitrol, Mr. Gellman had a successful consulting practice delivering strategic, financial and operational leadership and advice to diverse clients, including several publicly traded companies.

From 1995 to 2000 Mr. Gellman was the CEO and co-founder of Apex Site Management, a company that was the largest third party manager of wireless and wireline communications sites. In January of 2000, Apex merged with SpectraSite Communications to create the largest telecommunications site portfolio in the United States. As part of the merger, Mr. Gellman then served for a one-year period as President and CEO of SpectraSite-Transco Communications, Ltd., a joint venture between SpectraSite and British Gas for the development of tower sites in the United Kingdom.

Prior to Apex, Mr. Gellman was 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 holds an MBA in Finance and Accounting from The Wharton School of the University of Pennsylvania and a BS in Biology from Tufts University.

Ronald L. Rubin, Chief Financial Officer

Ronald L. Rubin joined Global Tower Partners ("GTP") in July 2010 as Chief Financial Officer. He is responsible for the finance and accounting operations of GTP.

Prior to joining GTP, Mr. Rubin served as Senior Vice President and Chief Financial Officer for Home Diagnostics, Inc. ("HDI") from November 2005 to June 2010. Home Diagnostics, with over $125 million in sales, is a leading developer, manufacturer and marketer of blood glucose monitoring systems and disposable supplies for people with diabetes worldwide. While at HDI, Mr. Rubin led the $90 million initial public offering on the NASDAQ stock exchange in 2006, implemented controls and processes under Sarbanes-Oxley and, in March 2010, completed the strategic sale of the company to Nipro Corporation.

Prior to joining HDI, Mr. Rubin held the position of Executive Vice President and Chief Financial Officer for Waste Services, Inc., a solid waste services company operating in the United States and Canada, from September 2003 to May 2005. At Waste Services, Mr. Rubin completed several acquisitions and a $370 million financing, comprised of a subordinated note offering, a senior credit facility and an equity placement.  Prior to that, Mr. Rubin served as Chief Accounting Officer and Controller for Paxson Communications Corporation from February 2001 to August 2003, and in various capacities for AutoNation Inc., a Fortune 100 company, from March 1996 to February 2001, most recently as Vice President, Controller. While at AutoNation, Mr. Rubin participated in multiple merger and acquisition transactions of public and private companies in the automotive retail, automotive rental and solid waste services industries, as well as the $1.4 billion IPO of the solid waste division, Republic Services, Inc. and the tax free spin-off of the automotive rental division, ANC Rental Corporation. Mr. Rubin also completed a $1.5 billion asset securitization program for installment notes receivable issued by AutoNation's finance subsidiary. Prior to AutoNation, Mr. Rubin was an audit manager with Arthur Andersen from 1987 to 1996.

Mr. Rubin is a Certified Public Accountant. He earned a Bachelor of Science in Accounting from American University and a Master of Science in Taxation from Florida International University.

Bernard A. Borghei, Senior Vice President, Operations

Bernard A. Borghei joined GTP in October of 2009 and is the Senior Vice President of Operations. Mr. Borghei is responsible for all aspects of domestic and international site management and maintenance, engineering, regulatory compliance, tower modifications, the construction of build-to-suit sites (in the international markets), and the deployment of DAS systems plus new technologies such as Small Cells. In this role he manages a field-based team of Regional Site Managers, directors, project managers, and Development personnel as well as a support team of engineers, regulatory compliance, and due diligence specialists in Boca Raton.

Mr. Borghei has over 19 years of experience in the wireless telecommunications, locations based services, and satellite communications industries with responsibilities for engineering, operations, strategic planning, solutions and services sales and business development, customer services and support, project implementation and management areas in North America, Europe, The Middle East, and Africa.

Mr. Borghei has previously held various management and executive positions with companies such as Omnipoint, SunCom Wireless, Western Wireless International, Wireless Facilities Inc., TruePosition Inc., and SkyBitz, Inc., to name a few. Prior to joining GTP, Mr. Borghei served as the Executive Vice President of Sales and Operations for SkyBitz, Inc., the leading provider of asset management solutions and services in North America to transportation, oil, gas, and chemical industries. He also served as the member of the Board of Governors for NPTC (National Private Truck Council).

Mr. Borghei holds a Bachelor of Electrical Engineering from Villanova University and an MBA in Global Management from the University of Phoenix.

Shawn R. Ruben, Senior Vice President & General Counsel

Shawn R. Ruben joined Global Tower Partners ("GTP") in February 2008 as Senior Vice President, General Counsel & Secretary. He is responsible for GTP's legal and asset management affairs.

Mr. Ruben brings GTP twenty years of experience in providing legal and management services to growth oriented, multi-site companies including several which were affiliated with Huizenga Holdings. From 1995 to 2002, Mr. Ruben was Vice President - Development & Legal for Extended Stay America, Inc. (NYSE-ESA) from its inception as a public company through the completion of its unprecedented 400 hotel development program in 2002. During his tenure at ESA, Mr. Ruben was responsible for company legal affairs including: drafting real estate acquisition and development documents, site diligence and entitlement, credit facility management and compliance, litigation and operations.

From 1991-1995, Mr. Ruben served in a series of business and legal positions involving increasing responsibilities for Blockbuster Entertainment Group, including Assistant General Counsel and National Director of Real Estate. In those capacities, he was responsible for managing the development of over 1500 store locations, company-wide asset management, the drafting and negotiation of leases as well as all real estate legal matters in the United States and Canada. Before joining Blockbuster, Mr. Ruben practiced law in Florida.  

Immediately prior to joining GTP, from 2002 until 2008, Mr. Ruben was founding Principal at Corporate Development Services, Inc. ("CDS") a leading national legal & management consulting firm, where he was the key executive for a number of legal, development and asset management engagements for companies including; Burger King, Hollywood Video, Einstein Bagels, Jamba Juice and NationsRent. A licensed Florida attorney, Mr. Ruben is a member of the Florida and American Bar Associations and a Florida Real Estate Licensee. Prior to obtaining his JD at Capital University, Mr. Ruben obtained a BA from American University.

Liam Stewart, Senior Vice President, Treasury and Planning

Liam Stewart joined GTP in February 2009 as Vice President - Treasury and Planning. He has overall responsibility for budgeting, forecasting and strategic and financial analysis.

Prior to joining GTP, Mr. Stewart was a portfolio manager with the Macquarie Group based in Dallas, TX, where he had overall responsibility for execution and management of Macquarie Media Group's North American investments. Mr. Stewart also served as a non-executive Director and President and Chief Executive Officer (interim) of American Consolidated Media, a Macquarie portfolio company and the 5th largest community publisher in the United States during this time.

Prior to his tenure at the Macquarie Group, Mr. Stewart held various management roles at Fairfax Media Limited, Australia's largest listed publisher. He has also worked as a strategy consultant at Accenture, specializing in the Australasian media and communications sector.

Mr. Stewart has a Bachelor of Arts (Hons) and a Bachelor of Laws from the University of New South Wales and is licensed to practice law in NSW, Australia.

Jose Sola, Senior Vice President, Corporate Development - LATAM

Jose Sola joined Global Tower Partners in June 2011 as the Senior Vice President of Corporate Development - Latin America. He is responsible for the company's relationships with its wireless carrier partners and Merger and Acquisition activities in the Latin America region.

Mr. Sola has over 17 years of experience in the Latin America telecommunications industry with responsibilities for mergers and acquisitions, corporate development and strategic planning.

Mr. Sola's career in telecommunications began in 1994 when he joined Telefonica, the leading provider of telecommunication services in Europe and Latin America. While at Telefonica, Mr. Sola held various management and executive positions including Investor Relations Manager, Director of Mergers and Acquisitions, and Vice President of Corporate Development, and was instrumental in the international expansion of Telefonica across Latin America. He has participated in transactions totaling more than $10 billion as well as the acquisition of Bell South's wireless companies in 10 countries in the region. Prior to joining Telefonica, Mr. Sola worked in the international division of ENDESA, the largest Spanish utility company, performing financial due diligence of acquisitions in Portugal.

Mr. Sola holds a Bachelor of Business Science degree in Economics and Finance from the Universidad de Granada - Spain.

Michael J. Belski, Senior Vice President, Leasing & Marketing

Michael J. Belski joined GTP in June 2006 and now serves as the Senior Vice President of Leasing & Marketing. Mr. Belski is responsible for leasing of the GTP portfolio, re-development of existing sites and the acquisition of build-to-suit contracts.  In this role, Mr. Belski manages GTP's Regional Leasing Managers as well as its marketing department.

Prior to joining GTP, Mr. Belski was an Associate Shareholder with Morrison Hershfield Corporation (MHC). While at MHC, Mr. Belski was responsible for growing the company's tower engineering services, turnkey tower reinforcing services and core A&E design services within the wireless telecommunication sector.

Mr. Belski's career in the wireless industry began in 1993 when he joined SBA, Inc., now known as SBA Communications Corporation. While at SBA, Mr. Belski served in various roles, including Field Operations Manager, Director of Sales, Vice President of Sales and Vice President of Select Accounts. During his tenure at SBA, Mr. Belski was instrumental in securing and implementing contracts with several wireless operators and executing 60+ build-to-suit agreements.

Mr. Belski holds a Bachelor degree from Indiana University of Pennsylvania.

Jim Rech, Vice President, Development

Jim Rech joined Global Tower Partners in April of 2008 and now serves as the Vice President of Development.  Mr. Rech is responsible for BTS sales and new tower builds throughout the United States and Puerto Rico.  In this role, Mr. Rech oversees the Development Department and Site Development Directors at GTP. 

Prior to this, Mr. Rech served as Director of Site Development for GTP in the Northeast Region and brings over 17 years of experience in developing towers and wireless communication networks including nine years as an entrepreneur having owned, managed and developed multiple tower portfolios throughout the United States.  

Mr. Rech's background includes roles as Vice President of Development for TCP Communications, a private equity-backed tower company that built and acquired 243 towers in 23 states and exited in a successful sales transaction to Global Tower Partners in February of 2006.  As Co-Founder and President of National Tower, LLC he has also developed towers throughout the Northeast Region and subsequently sold to Global Tower Partners in June of 2008.  Prior to National Tower, Mr. Rech held key tower network development positions at SBA Communications and as contractor for T-Mobile USA.  

Mr. Rech holds a Bachelor of Science in Business Marketing from Indiana University of Pennsylvania.

Lisa Aliperta, Vice President, Finance

Lisa Aliperta serves as Vice President of Finance for Global Tower Partners. Ms. Aliperta joined GTP in April 2010.  Ms. Aliperta's responsibilities include oversight of certain key finance and accounting functions.

Prior to joining GTP, Ms. Aliperta was the Chief Accounting Officer of Dycom Industries, a publicly-held company and a leading provider of specialty contracting services to the telecommunications and infrastructure industry, where she had responsibility for external and internal accounting and financial reporting processes.

Before joining Dycom Industries, Ms Aliperta spent seven years at Time Warner Cable, the second-largest cable operator in the U.S. where she served in a variety of management and financial roles, including Vice President of Operations Accounting and Assistant Controller.

Prior to joining Time Warner Cable, Ms. Aliperta was employed by Ernst & Young LLP for 10 years, most recently as a Senior Audit Manager in Assurance and Business Advisory Services, managing audit engagements for companies in a wide range of industries.

Ms. Aliperta is a Certified Public Accountant and a Chartered Accountant.  She holds a Bachelor of Business Science degree in Finance and Accounting from the University of Cape Town, South Africa.

Robert G. Raville, Vice President, Railroad Development

Mr. Raville joined Global Tower Partners in September of 2010 as Vice President of Railroad Development. In this role, Mr. Raville leads GTP's railroad origination and development platform, with focus on acquiring rights to other railroad portfolios as well as ensuring targets for new sites leased and built on existing systems are met.

Prior to GTP Mr. Raville served as President of CitySwitch, LLC, an affiliate company of Norfolk Southern Corporation ("NS") involved in new tower development, tower management and fiber optic duct leasing along the NS system from early 2008. In this capacity, Mr. Raville was responsible for managing the profit & loss, job cost, cash flow and increase of asset yield for the company, including all aspects of tower development, M&A activity and NS owned tower management. From 2005 to 2008 Mr. Raville served as CitySwitch's Senior Vice President of Development. In 2010, CitySwitch's operating business and assets were sold to GTP. 

Prior to CitySwitch, Mr. Raville served as the Senior Site Development Officer and Senior Director of Acquisitions for Unison Site Management, a leading firm in the wireless lease acquisition market. Based in New York City and later in Atlanta, Mr. Raville managed the Southeastern region for the company beginning in 2003.

Mr. Raville holds a Bachelors degree from the University of Virginia.

Mark D. Serwinowski, Vice President, Information Technology

Mark Serwinowski is the Vice President, Information Technology at Global Tower Partners. Previously, he was the Chief Technology Officer at Blue Frog Solutions, the leading provider of ACORD middleware software for secure data transfer, messaging and transaction processing between insurance carriers/underwriters and distributors/agents.

Prior to Blue Frog Solutions, Mr. Serwinowski was the Chief Information Officer for Woolbright Development, Inc. and was a crucial part of Woolbright's success across the board, controlling the information needs of a rapidly growing company with multiple offices located throughout the state of Florida.

His team was responsible for the proactive research of shopping center and retail data, the analysis of the company's business processes and the implementation of new technologies that support the company's growth. Mr. Serwinowski also led the team that developed Woolbright's Property Information System, winner of the 2005 South Florida Business Journal Technology Award for Best Technology Application. This proprietary technology helps identify new investment opportunities and lease existing properties.

Mr. Serwinowski previously headed the Information Systems department at Extended Stay America and served in numerous senior positions at United Technology's Pratt & Whitney subsidiary, where he was recognized for outstanding contribution to the latest generation military fighter engine program.

Mr. Serwinowski received a Bachelor in Engineering from Vanderbilt University and earned a Master's degree in Engineering Management from the University of South Florida. He also completed post-graduate education at the University of Florida and executive education at the Darden Graduate School of Business Administration at the University of Virginia.

Daniel J. Turnpaugh, Vice President, Utility Development

Mr. Turnpaugh joined Global Tower Partners in February 2010 as Vice President of Utility Development. In this role, Mr. Turnpaugh leads GTP's efforts to develop partnerships with utilities that effectively leverage their infrastructure for wireless communications use.

Prior to joining GTP, Mr. Turnpaugh served as Vice President - Operations for DukeNet Communication Services, LLC ("DNCS") - a wholly-owned, non-regulated affiliate of Duke Energy Corporation, where he was responsible for day-to-day operations, M&A activities and new tower development.

Prior to founding DNCS, Mr. Turnpaugh held the post of Managing Director - Real Estate and Development for Lattice Communications, LLC for 6 years. While at Lattice, Mr. Turnpaugh was responsible for management of landlord relationships and new tower development for Lattice. During his tenure at Lattice, Mr. Turnpaugh utilized tower development rights agreements Lattice had in place with Duke Energy to develop communication sites on Duke Energy-owned real estate, transmission towers and utility poles in Ohio, Kentucky and Indiana.

Mr. Turnpaugh holds an MBA in Finance from Xavier University in Cincinnati, Ohio and a BBA in Finance from the University of New Mexico in Albuquerque.

Jim McCulloch, Vice President Real Estate

Jim McCulloch joined Global Tower Partners in March 2012 as Vice President of Real Estate.  Mr. McCulloch oversees GTP's Real Estate Department and is responsible for developing the company's real estate portfolio while expanding existing landlord relationships.

With over 20 years of experience, Mr. McCulloch has enjoyed a successful career in telecommunications and technology and possesses a strong practical, operational and financial/accounting background.  Immediately prior to joining GTP, Mr. McCulloch was a partner in DGP Development, a leading provider of Distributed Antenna Systems (DAS) to hotels and sports stadiums.  Prior to DGP, Mr. McCulloch had a successful consulting practice advising buyers, sellers, and owners of hotels and resorts, commercial real estate, sports stadiums, ski areas, casinos, spas and others on a variety of technology and financial matters.  

Formerly, Mr. McCulloch was the Vice President of Information Technology for Destination Hotels and Resorts where he was responsible for over 2000 users in both the U.S. and the U.K.  He has also held senior positions in business development and product management with Mitel Networks and Everest Broadband Networks. 

Mr. McCulloch possesses a Bachelor of Science from the University of Nevada - Las Vegas

Joanna Langridge, Senior Director of Real Estate

Joanna Langridge leads the GTP Real Estate department as Senior Director of Real Estate and is responsible for all real estate site management operations and programs.  This includes client relations and retention, new client development, and interfacing with other GTP departments.  Ms. Langridge has worked at GTP since its inception in 2003 and previously led the Lease Administration department before joining the Real Estate department in 2007.  Prior to joining GTP, Ms. Langridge worked in leasing and client management at Apex Site Management from 1997 until their purchase by Spectrasite in 2001.  Before joining the wireless industry, Ms. Langridge worked in advertising and higher education. 

Ms. Langridge attended colleges in England and the U.S. and has degrees in Art and Design and English Literature. She worked with the Small Business Development Center at the Wharton School of Business (University of Pennsylvania) and the Philadelphia Chamber of Commerce.  Ms. Langridge is a member of Women's Wireless Leadership Forum - an networking organization affiliated with PCIA.