WilliamsMarston LLC is a leading accounting, tax, and valuation advisory firm with offices across the country. Established in Boston in 2014 by former Big Four professionals, the firm specializes in providing comprehensive services to pre-IPO, public, and private equity-backed companies undergoing rapid growth and transformation. With a team of industry experts possessing Big Four experience and strong technical expertise, WilliamsMarston delivers successful outcomes in even the most complex situations.

Initially starting out in coffee shops and restaurants, the firm quickly gained recognition by assisting a biotechnology company and a software company in preparing for their initial public offerings. As the firm expanded, they broadened their service offerings to include technical accounting, mergers and acquisitions, divestitures, private equity services, interim management, and restructuring. In November 2020, WilliamsMarston acquired a highly respected corporate tax advisory practice, enhancing their capabilities in complex income tax accounting.

They further expanded their expertise in December 2021 by acquiring a nationally recognized provider of complex valuation advisory services. Today, WilliamsMarston has over 200 professionals and serves more than 1,000 clients across the nation. They remain dedicated to ensuring their clients achieve their most critical initiatives and offer their expertise to multinational public companies, private equity-backed firms, and pre-IPO growth companies.

Contact WilliamsMarston to learn more about how they can assist your organization