Sam Mascareno

Chief Operating Officer

About Sam

Sam Mascareno is the chief operating officer for RSM US LLP. He is responsible for leading enterprise operations, including the execution of the firm’s strategic priorities and the annual planning process, across the U.S., Canada, India and El Salvador. Sam delivers results through the combination of his pragmatic, data-driven approach to operating the business and his innate ability to engage and inspire people in pursuit of RSM’s purpose, which is to instill confidence in a world of change. 


Experience

Sam joined RSM’s executive leadership team in 2017, first leading the firm’s West region and then taking on responsibility for building RSM’s markets strategy and leading the markets team. Currently a member of the leadership team, he has also served as a member of the firm’s business planning and enterprise stewardship committees, as well as previously co-leading the firm’s client experience strategy. During his six-year tenure as leader of the West region, the firm experienced significant growth in those markets due to the team’s focus on bringing the full power of RSM’s extensive knowledge and capabilities to clients in the region.

Sam began his career as a tax professional at a Big Four firm in 1994 and joined RSM in 2001. He has extensive experience leading large-scale projects and delivering tax consulting for globally active clients in the manufacturing, consumer products and technology industries.

Sam approaches his work with an ethic of service to others. He maintains close connectivity with RSM’s clients to understand their needs and make sure RSM is positioned to support them. Sam is equally engaged with RSM’s people, mentoring and guiding professionals across the firm. He has also worked with the RSM US Foundation to sponsor junior college scholarships for students to pursue a four-year degree and a career in public accounting.

A gifted speaker and communicator, Sam is a source of engagement and inspiration for RSM and its people. He is a steward of RSM’s clients, culture, people and communities.

Outside of work, Sam’s passions are faith, family and good food. 


Professional affiliations and designations

  • Certified public accountant
  • American Institute of Certified Public Accountants
  • San Diego State University School of Accountancy, board member

Education

  • Bachelor of Science, business administration (accounting), San Diego State University
  • Master of Science, accountancy (taxation), San Diego State University