Patrick D. Riordan

Pat serves as president and CEO of Nsight and oversees the day-to-day operations of Nsight and its subsidiaries, which include Nsight Telservices and Cellcom. Pat's involvement with the company spans four decades, and during this time he has successfully guided Nsight through its expansion from a local telephone company to a premier telecommunications provider in the Midwest.

Pat's extensive industry knowledge has earned him many key positions in various organizations. Some of his involvements include: past chairman, current board and executive committee member for CTIA, past board member and executive committee member for the USTelecom Association, past president and current board member of the Competitive Carrier Association (CCA), past president and board member for the Wisconsin State Telecommunications Association, past board member of the Associated Carrier Group and past president of the Eastern Rural Telecommunications Association.

Pat has five children, four grandchildren and four stepchildren and resides in Green Bay with his wife, Karen Van Gemert. He is a graduate of St. Norbert College and the Advanced Telephone Management program through the University of Kansas.

Robert H. Riordan

Rob Riordan, executive vice president for Nsight, is a dynamic speaker and lively commentator on emerging technologies in the telecommunications world.

His knowledge combined with his more than 30 years of telecom experience allows Rob to speak on a number of subjects. As a Competent Toastmaster, he has traveled the globe for speaking engagements during the last ten years. In addition to various state telecommunications meetings, Rob has spoken on behalf of the Wireless Communications Association, Broadband Wireless Forum, OPASTCO, Telecoms and IT Brand Building and Development Forum in London, UK the Broadband Fixed Wireless Access World Congress in Rome, Italy, Femtocells Asia, 5th Global CDMA Operation & Development Forum in Shanghai and Femtocells World Summit, just to name a few. In 2011, Rob was accepted as a professional member of the National Speaker's Organization.

His community involvement includes currently serving on the board of directors for the historical Meyer Theatre, Relevant Radio and the Natiaonal Railroad Museum. He is on the the technical advisory board of Interdigital, which advises the the company's senior management team on strategic technical priorities and direction, potential new markets and product opportunities and product, service and technology program initiatives and additional technology matters. He has also served as chairman for the City of Green Bay Chamber of Commerce board of directors. In addition to being past Chairman of OPASTCO, he has served on and chaired industry committees for USTA, WSTA, CTIA, RCA and WCA.

Rob has four children and three grandchildren and lives in Green Bay with his wife, Cathy. He is a graduate of the University of Wisconsin - Platteville.

Lawrence B. Sorrel

Larry has been active in the private equity business for 27 years having served as a board member of 39 private equity backed companies. He founded Tailwind Capital in 2003 and is a Managing Partner of the firm. Tailwind is a private equity firm that invests in growth-oriented middle-market companies in business and communications services and healthcare. The firm's investment approach is to partner with management to build value through internal growth, acquisitions and operational and strategic developments. Since its founding, Tailwind has invested $871 million behind 23 entrepreneurial companies. Prior to forming Tailwind, Larry worked at Welsh, Carson, Anderson, & Stowe as a general partner and member of the firm's management committee and at Morgan Stanley and its private equity affiliate, Morgan Stanley Capital Partners as a Managing Director. He is a graduate of Brown University, Harvard Law School, and the Harvard Business School.

Adam F. Stulberger

Adam joined Tailwind in 2003 from SpectraSite Communications, where he served as Chief Development Officer and Chief Financial Officer of the company's European operations. He specialized in media/communications during his years at Morgan Stanley and Credit Suisse, which followed his experience as a corporate attorney at Wachtell, Lipton, Rosen & Katz. He is a graduate of Lafayette College and of the New York University School of Law.

Ray J. Riordan

Ray is a semi-retired attorney whose primary area of practice is telecommunications law. Born into the telecom industry, Ray has remained involved over the years. He served as executive director for the Eastern Rural Telecom Association from 2004-2008, and was executive vice president of the Wisconsin State Telecommunications Association from 1979 - 2002. Ray was a partner at the Riordan and Sorenson Law Offices from 1969 - 1979, and served as assistant district attorney and assistant corporation counsel for Green Lake County from 1968-1969.

In addition, Ray's involvement in the telecommunications industry includes serving as president of the National Association of State Telecommunications and secretary-treasurer of WSTA Foundation, and participation in Wisconsin Legislative Committees on Telecommunications.

Other professional activities include past president of the Wisconsin Society of Association Executives, Director for Community Banks Incorporation - Bank of Middleton, and past president for the Ripon Chamber of Commerce.

Ray obtained his bachelor's degree from Marquette University, and received his law degree from UW-Madison Law School. He has three adult children and four grandchildren. He enjoys being active and spending time with family and friends, traveling, boating, exercise, playing bridge and poker, photography and art.

Charles E. Baker

Chuck, a certified public accountant, is a retired partner from Ernst & Young. Chuck retired in 2005 after 38 years.  As a partner in Ernst & Young’s Professional Practice Group, Chuck was the technical reviewer for all SEC filings for more than 30 companies, was involved in more than 50 initial public offerings with the SEC and was also the technical reviewer for the financial statements for more than 50 private companies including several larger ones.  Chuck spent three years in Ernst & Young’s National Office and also was assigned to the Tokyo office for six months. 

In addition to serving on Nsight’s Board of Directors since 2006, Chuck is also on the Board of Directors of CIB Marine Bancshares, Inc. and was formerly on the Board of Directors of Aurora Health Care, Inc. He serves on several committees and is Chairman of certain ones.

Chuck and his wife, Dottie have four children and five grandchildren. He is a graduate of the University of Wisconsin-Whitewater.

Michael D. Harper

Michael is a lead global relationship manager at CenturyLink in Minneapolis, MN. He has more than 20 years of experience in the telecommunications industry and previously worked at Nsight Telservcies, a subsidiary of Nsight, as key account executive from 1999-2001. Michael graduated with a Bachelor of Arts degree in history from the University of Minnesota and a Master’s degree in telecommunications management from St. Mary’s University of Minnesota.

Michael and his wife, Mara, live in Savage, MN with their two children, Claire and Andrew. In his free time Michael volunteers with Dads Of Great Students, Parent Teacher Child Committee, and as a youth baseball coach. Michael is part of the fourth generation of the Riordan family to be actively involved in the Nsight family of companies.

Fredric D. Tannenbaum

Fred Tannenbaum became an Nsight board member in 2011. Currently a managing partner at Gould & Ratner in Chicago, Fred was identified by the well-known business publication Crain's Chicago Business as a top expert on family-owned businesses. Fred was also recognized by the Illinois Venture Capital Association as a leading expert on private equity and venture capital. He has written extensively on business and legal topics, including a book and over 90 articles, and frequently speaks worldwide on these subjects.

Among other things, Fred serves on the board of directors of a next-generation, leading-edge provider of core messaging, mobile device management, and connectivity gateway solutions to the global telecom and broadband industry, particularly involving SMS and MMS. He is also on the executive committee and is a past president of Law Exchange International, a network of 20 law firms in Europe, India, China, Australia, Asia, South America and North America with more than 34 other correspondent firms throughout the world. Fred also serves on the boards of many charities.

Fred received his law degree from the University of Wisconsin-Madison Law School (cum laude) and obtained his undergraduate degree from Ohio Wesleyan University (summa cum laude, Phi Beta Kappa).