Bill Mayberry is a seasoned telecommunications executive with over 45 years of industry experience, including 30 years in wireless leadership, strategic planning, and consulting. His career spans key roles at AT&T Mobility, BellSouth, and MasTec, where he led large-scale network integration projects, managed multimillion-dollar budgets, and drove business development initiatives. As a partner at Wireless Insiders Network (WIN), Bill advises small to mid-sized wireless companies, helping them forge strategic partnerships, optimize network strategies, and capitalize on emerging 5G opportunities. With international experience in China and India, leadership in academia, and a strong track record of innovation, Bill is now focused on board and advisory roles where he can leverage his expertise to help organizations navigate digital transformation and industry evolution.

Stephen D. Harrell is a seasoned financial and operational executive with nearly 40 years of experience in corporate finance, M&A, digital infrastructure, and private equity-backed growth strategies. As senior vice president and chief financial officer at Expedient, he played a pivotal role in scaling the company’s revenue from $75 million to $225 million and increasing EBITDA by over 350%, leading to a successful acquisition by InfraBridge. With a deep background in high-tech industries, including leadership roles at Texas Instruments and Akustica, Stephen has driven strategic transformations, optimized financial structures, and executed high-value exits. His extensive international experience in Japan and Europe, combined with his expertise in cloud computing and data center operations, positions him as a highly valuable board candidate for companies looking to scale, enhance profitability, and navigate complex financial landscapes.