Mary Theo

Director, Human Resources Leader
Aprio Professional Services+
Aprio Advisory Group, LLC

Office: (617) 241-4627

Email: mary.theo@aprio.com

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Overview

Mary Theo joined Aprio as Director, Human Resources Leader of Aprio’s Professional Services+ practice on May 1, 2025.

Experience

Mary was with RSM US LLP for almost 22 years. She started as a Human Resources Director in Boston and then transitioned to the Regional Office Services Leader for the Northeast and Southeast regions. She then served as the senior director, human resources leader with the firm’s Professional Services+ practice, the former RSM Alliance, an affiliation of independent professional services firms in the United States, Canada, the Cayman Islands and Puerto Rico, since 2018.

Before joining Aprio, Mary held positions at KPMG and PricewaterhouseCoopers (PwC) in addition to marketing and legal organizations. She has a broad human resources background including HR consulting. Mary’s greatest passion is building and strengthening relationships with clients. She has a strong background in human resources trainings and soft skills trainings, as well as understanding operationally how human resources structures can be set up for success. Mary was also the leader of RSM’s Autism Awareness & Acceptance Committee for the United States and Canada and had worked with individuals across the firm to focus on neurodiverse hires in the workplace.

Education & Affiliations

Mary holds a Bachelor of Science and a Master of Science in management from Lesley University, as well as an Associate of Science in paralegal sciences from Marian Court College. She is involved in SHRM, NEHRA, the AICPA and Massachusetts Society of CPAs. Mary is a certified Everything DiSC facilitator.

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