About Us

Tower59 was founded on the belief that professional services are over-priced and inefficiently positioned for the growing companies they serve. As entrepreneurs ourselves, we understand that the needs of early- and mid-stage companies differ greatly from those of larger, more established companies.
Since the inception of the IRC 409A regulations in 2005, a lack of competition has allowed a cottage industry to overcharge entrepreneurs for an independent valuation of their company’s shares. We launched Simple409A to better serve the niche customer that is a growing company. Through a mix of automation, workflow optimization, a distributed US-based workforce, and volume, we are able to significantly reduce the cost of a 409A valuation.

Management Team

Scott Lockhart, CPA

Scott spent 8 years at PricewaterhouseCoopers in the United States and the United Kingdom. He worked within the Assurance practice, auditing and working on Sarbanes-Oxley compliance for large multi-national clients and smaller private companies. Scott is a licensed CPA and a member of the AICPA and an AICPA Forensic & Valuation Section Member. He holds an MBA from the University of Oxford and two BAs in Accounting and Health & Physical Education from Hillsdale College.


Elizabeth Ritchey

Elizabeth has 6 years experience in asset management with Deutsche Bank in New York City.  Her expertise includes financial analysis, modeling, and microfinance, and she has a personal passion for businesses with a social focus.  Elizabeth earned an MBA from the University of Oxford, where she was a Skoll Associate Fellow and Saïd Business Scholar, and a BA in Finance from Miami University of Ohio.


Board of Advisors

Xavier Helgesen

Xavier Helgesen is a serial social entrepreneur and angel investor who is passionate about energy, food, literacy and the environment. He is the Co-Founder and CEO of Off.Grid:Electric, a distributed renewable energy company operating in Tanzania. He is also Co-Founder and Chairman of Better World Books, a triple bottom line online bookstore funding literacy around the world.


Nigel Tunnacliffe

Nigel is passionate about entrepreneurship and about supporting entrepreneurs. He has founded more than half a dozen companies to date and advised or consulted for dozens more. He holds an MBA from the University of Oxford where he studied as a Skoll scholar, a prestigious scholarship for social entrepreneurs, and a BA in Communications from Simon Fraser University.


Sarah Ritchey

Sarah Ritchey is an attorney with Miller & Chevalier in Washington, DC, where she practices in the area of federal income tax. Her practice currently includes matters involving financial products and international taxation. Prior to joining Miller & Chevalier, Ms. Ritchey worked in the area of corporate finance, developing a broad range of experience in debt and equity transactions.