Royce Holland Chairman of the Board and Chief Executive Officer Royce Holland has more than twenty-five years of experience in the telecommunications, independent power and engineering/construction industries. In his current position, Holland is chairman and chief executive officer of Allegiance Telecom, Inc. Along with Tom Lord, Allegiance's executive vice president, Holland is co-founder of Allegiance. Previously, Holland was president and one of several co-founders of MFS Communications Company,Inc., the largest CLEC with operations in 52 metropolitan areas in North America, Europe and Asia. Under his leadership, MFS grew from a privately held start-up operation to one of the Nasdaq 100 Index companies with annual revenue of about $1 billion and a market value of approximately $13 billion when the merger between MFS and WorldCom was completed on December 31, 1996. In January 1993, Holland was appointed by President George Bush to the National Security Telecommunications Advisory Committee. Holland is a former chairman of ALTS, the Association for Local Telecommunications Services. He earned a bachelor's degree in engineering from the University of Texas and a master's degree in engineering from the University of Pennsylvania.

Dan Yost President and Chief Operating Officer Dan Yost has more than twenty-seven years of experience in telecommunications and business. Prior to joining Allegiance Telecom, Yost was president and chief operating officer of NETCOM On-Line Communication Services, Inc., a leading Internet service provider. At NETCOM, Yost was responsible for managing all aspects of domestic operations, including development and implementation of NETCOM's overall strategic direction. Prior to NETCOM, Yost was president of the Southwest region of AT&T Wireless Services, Inc. During his three-year tenure, the Southwest region reached record growth and plan performance. Yost also served as president of McCaw Cellular Communications/LIN Broadcasting in the Southwest region and was president, general manager and founder of MetroCel Cellular Telephone Company. He earned his B.S. in electrical engineering and M.B.A. from Southern Methodist University.

Thomas M. Lord Executive Vice President of Corporate Development and Chief Financial Officer Thomas Lord is executive vice president of corporate development and chief financial officer of Allegiance Telecom, Inc. Lord is responsible for overseeing the company's mergers and acquisitions, corporate finance and investor relations functions. Lord is an 18 year veteran in investment banking, securities research and portfolio management. In the five-year period ending December 1996, while associated with Bear Stearns, & Co. Inc. as a managing director, Lord oversaw 43 different transactions valued in excess of $6.2 billion for the telecommunications, information services and technology industries. He has a bachelor's degree in economics from Auburn University and a master's degree in business administration from the University of Miami.

Anthony (Tony) Parella President, Shared Technologies Tony Parella oversees Shared Technologies, the company's customer premise equipment (CPE), service and maintenance business. Parella was the very first employee of Allegiance when the company was formed in 1997 and has served in a variety of positions, most recently president of telecom and retail services. Prior to joining Allegiance, he was vice president and general manager for MFS Intelenet, Inc., an operating unit of MFS Communications Company, Inc., where he was responsible for the company's sales and operations in Texas. He also served as regional sales director for Sprint. Parella is a graduate of Morrisville College in Morrisville, New York.

G. Clay Myers Senior Vice President, Finance and Accounting G. Clay Myers joined Allegiance as its senior vice president, finance and accounting in December 1999. Prior to joining Allegiance, Mr. Myers was the vice president, finance, chief financial officer and treasurer of PageMart Wireless, Inc. Prior to joining PageMart, Myers was senior operations manager for Dell Computer Corporation from 1991 to 1993 and was with Ernst & Young, LLP from 1982 to 1991. Myers is a certified public accountant and earned a business administration degree from the University of Texas. Tim Naramore Senior Vice President and Chief Information Officer Tim Naramore is responsible for information systems development, integration, deployment and operations. He also is involved in Allegiance Telecom's e-business strategy and has responsibility for the company's application service provider hosting and engineering organizations. Before joining Allegiance in June, 1998, as vice president of information systems, Naramore served as director of product development for Netcom/ICG in Dallas. Previously, he held a variety of positions on the technical staff for the information systems group at Frito-Lay, Inc. in Dallas. Naramore has also worked in information systems at Boeing Computer Services and Texas Instruments. He earned a bachelor of science degree in information systems from Pittsburg State University in Pittsburg, Kansas. Mark Tresnowski Executive Vice President, General Counsel and Corporate Secretary Prior to joining Allegiance, Tresnowski served as a partner in the corporate, securities and venture capital practices at Kirkland & Ellis in Chicago, where he represented Allegiance in the Company's initial public offering of common stock and high-yield debt. Tresnowski represented clients ranging from emerging growth companies to Fortune 100 companies on domestic and international debt and equity financing, mergers and acquisitions and joint ventures. After obtaining a Bachelor of Arts degree from the University of Illinois, Tresnowski graduated from the University of Virginia School of Law where he served as editor of the Virginia Law Review. Chris MacFarland Senior Vice President and Chief Technology Officer Chris MacFarland is responsible for defining Allegiance Telecom's network and systems technology and architecture, developing strategic vendor requirements, and oversight of key engineering initiatives. Mr. MacFarland joined Allegiance in August of 1998 as Director of Data Engineering. Prior to joining Allegiance Telecom, he held a variety of positions with Verio with increasing responsibilities, culminating in being named Director of Networks and Consulting. He has over 10 years of experience developing and engineering public networks and internet technology. Mr. MacFarland attended the University of Texas at Arlington. Kevin Joseph Senior Vice President, Government and External Affairs Working Allegiance's Washington D.C. office, Kevin Joseph leads the company's work in the legislative and regulatory arenas. He previously served as Allegiance vice president of government affairs. Before joining Allegiance, Joseph was vice president of congressional and regulatory affairs at AT&T with responsibility for public policy issues affecting AT&T's broadband services unit. Prior to that, he was senior minority counsel for the U.S. Senate Committee on Commerce, Science and Transportation. Joseph earned his undergraduate degree from Georgetown University and his juris doctor from Catholic University of America's Columbus School of Law. Keith Hatley Senior Vice President of Sales Hatley directs the Allegiance Telecom sales organization and is responsible for all retail and national sales operations. He has previously served as Allegiance's vice president of customer services including customer implementation, service delivery, customer care and the national repair center; Midwest regional sales vice president, Houston city vice president, and sales manager in Ft. Worth. Prior to joining Allegiance Telecom, Hatley served as sales manager for MFS and Worldcom in the Dallas market. Hatley earned his bachelor of arts degree in speech communications from Stephen F. Austin State University in Nacogdoches, Texas. Richard (Dick) Anderson Senior Vice President, Network Planning, Engineering and Operations Dick Anderson oversees Allegiance Telecom's entire network operation, from initial planning to implementation and maintenance. He is one of the founders of Allegiance Telecom and previously served as the company's vice president of network planning. Before joining Allegiance, Anderson was with Metropolitan Fiber Systems (MFS), planning and supervising the carrier's roll-out of several new markets. Prior to MFS, he held various planning, engineering and operations positions with Wisconsin Telephone Co. and Ameritech Services. His experience spans 39 years in the telecommunications industry with both incumbent and competitive carriers. He earned a bachelor of arts degree in liberal arts from DePaul University in Chicago. John Dumbleton Senior Vice President, Wholesale Services and Alternate Channels John Dumbleton directs the national sales and marketing efforts of all of Allegiance Telecom's non-retail sales channels, including wholesale, resale and agent programs. Previously, he served as Allegiance's vice president of wholesale services. Before joining Allegiance in 1998, Dumbleton held various sales and management roles at MCI Communications. He has more than 10 years of experience with domestic and international industry partners and service providers. He earned a bachelor of science degree in engineering and a masters of business administration degree from Virginia Tech in Blacksburg, Va. Mark Stachiw Senior Vice President and General Counsel - Allegiance Telecom Company Worldwide Mark Stachiw is responsible for all legal matters of Allegiance Telecom Company Worldwide and its operating subsidiaries. He also oversees security and state regulatory issues for Allegiance Telecom, Inc. He previously served as vice president and general counsel for Allegiance Telecom Worldwide. Prior to joining Allegiance, Stachiw was of counsel at Paul, Hastings, Janofsky and Walker, based in Washington, DC, and representing national telecom firms in regulatory and transactional matters. Previously, he served as vice president and general counsel at Verizon Wireless Messaging Services (formerly known as AirTouch Paging). He was also a member of the legal staff at Pacific Telesis Group (now part of SBC Communications). Stachiw earned his bachelor of arts degree in political science and juris doctor degree from the University of California at Davis and is a member of the California and Texas bar. Stachiw is an elected city councilman in Parker, Texas, and previously served as the secretary of Parker's planning and zoning commission. Jonathan Doddridge Vice President of Customer Services Doddridge is responsible for Allegiance's customer care, sales support and national repair center organizations, providing strategic, tactical and system plan directions to control and operate multiple call centers. Previously, he served as Allegiance Telecom's Atlantic regional vice president, Baltimore city vice president and general manager and as a staff manager for Allegiance's national field sales organization. Before joining the company in May 1998, he worked in the Dallas sales organization of San Jose, Calif.-based Netcom, one of the original Internet service providers. He is a graduate of Baylor University in Waco, Texas. Matthew Fassnacht Regional Vice President, Northwest Region Matt Fassnacht oversees Allegiance Telecom sales efforts for the Northwest U.S. region, including existing Allegiance operations in San Francisco, Oakland, San Jose and Seattle and an office to be opened in Portland, Ore. Most recently, Fassnacht served as Allegiance city vice president, responsible for sales and operations in Oakland and San Jose. Previously, he served as a vice president and general manager for Teligent Inc., based in Vienna, Va. Prior to that, Fassnacht served as western U.S. regional manager for the alternate channels division of Sprint Communications, where his work was recognized with a President's Club award. Akber Khan Regional Vice President, North Central Region Akber Khan is responsible for overseeing Allegiance Telecom's sales and operations in the Chicago, Cleveland, Detroit, Minneapolis, Northern New Jersey, Boston, Philadelphia and Pittsburgh offices. He is based in Allegiance's Chicago office. Most recently, Khan served as Allegiance Telecom's Northeast regional vice president based in New York. Before joining Allegiance, he held management positions at Winstar Communications, Inc. and WorldCom. Prior to that, Khan was with MFS Communications in Chicago. He earned his bachelor of arts degree in economics from the University of California at Berkeley. Matt Harty Regional Vice President, Northeast Region Before being promoted to Northeast regional vice president, Matt Harty served in a similar capacity for Allegiance's national accounts in the south and west regions. Prior to joining the company, he was vice president of sales and service for WorldCom's mid-Atlantic region. He earned his bachelor of arts degree from Villanova University in Pennsylvania, where he was a member of the Phi Beta Kappa Honor Society. Kathleen Smith Regional Vice President, Southwest Region As pacific southwest regional vice president, Kathleen Smith is responsible for Allegiance Telecom's sales to small and medium-sized businesses in the Los Angeles, Orange County, Phoenix, San Diego and Denver markets. Prior to joining Allegiance Telecom as city vice president for Los Angeles, Smith served as vice president and general manager in the Los Angeles office of Winstar Communications, Inc. She previously held management and sales positions at other telecommunications firms. Smith earned her bachelor of arts degree in social science from California Polytechnic University in Pomona and did graduate work at California State University in Los Angeles.