Founded in 2014 in Boston, WilliamMarston is a company that specializes in providing a range of financial services to pre-IPO (Initial Public Offering), private equity-backed, and publicly traded companies. Their expertise spans across accounting, tax consulting, valuation advisory, and various other related services.

WilliamMarston’s accounting services encompass a diverse set of solutions. These include accounting advisory, assistance with mergers and acquisitions, divestitures, interim management, financial planning and analysis, support for initial public offerings (IPOs), guidance on De-SPAC mergers, technical accounting expertise, and managed SEC (Securities and Exchange Commission) services. Their comprehensive offerings are tailored to meet the complex financial needs of their clients.


WilliamsMarston offers Accounting Advisory Services to address complex technical accounting, operational finance, and financial reporting needs. Our experienced teams support various transactions such as mergers, acquisitions, divestitures, IPOs, de-SPAC mergers, and new accounting standards adoption. With a focus on quality service, we resolve CFO office challenges before they impact the overall business. Our team consists of top-rated former public accounting professionals, including former Big 4 national office and FASB staff members. We are known for our technical excellence and provide accounting expertise to organizations in different industries.


WilliamsMarston is the CFO's trusted advisor during periods of rapid growth and transformation. We provide guidance on complex financial matters as management teams expand their organizations. Our tax experts in the Corporate Tax Services line offer strategic insight and foresight for corporate tax issues, compliance, and disputes. This helps clients effectively manage risk and maintain value. We are experienced advisors who consider both client needs and regulatory requirements to deliver timely solutions for confident business decisions.

Contact info

405 Lexington Ave 7th Fl, New York, NY 10174, США