Marcello brings more than 15 years of accounting, reporting, consulting and executive management experience to WilliamsMarston. Since joining WilliamsMarston, Marcello has worked with clients advising them in pre-acquisition financial due diligence, post-acquisition assistance, process improvement, and audit preparation and procedures. He has worked on initial public offerings in the life sciences sector, successfully raising a combined total of $210 million.

Prior to WilliamsMarston, Marcello was a Director in PricewaterhouseCoopers LLP’s Transaction Services practice, where he provided technical accounting, financial and strategic advice to clients in connection with mergers and acquisitions in a variety of industries. Marcello began his career in PricewaterhouseCoopers's Boston Assurance practice, focusing on the technology and life science industries. While at PricewaterhouseCoopers, he worked for two years in the Global Capital Markets Group in Italy, where he advised foreign registrants with SEC reporting and US GAAP audit requirements. Throughout his career, Marcello has led engagements in the software, technology, healthcare, biotechnology, telecommunications, industrial products and consumer retail industries. He has advised management and investors on issues pertaining to financial and operational performance, quality of earnings, revenue recognition, stock-based compensation, debt and equity offerings, and purchase accounting. Marcello has significant experience with buy-side and sell-side mergers and acquisitions, as well as technical accounting.

Marcello is a Certified Public Accountant in the Commonwealth of Massachusetts (inactive) and holds a Bachelor of Science in Accounting degree from the University of Massachusetts Amherst.