Mary Tressel

Mary successfully led Armanino's B Corporation certification journey, establishing Armanino as the largest B Corp accounting firm globally. She brings the deep experience of responding to one of the most complex environmental, social and governance verification frameworks to her clients. Serving as a trusted advisor, Mary gives organizations the confidence to set and attain ambitious ESG goals.

Mary is an award-winning and results-oriented strategy, project management and communications professional with experience in the professional services, healthcare, financial services, technology and nonprofit sectors. She leads Armanino’s ESG Services team and the firm’s corporate foundation, delivering on Armanino’s purpose to be the most innovative and entrepreneurial firm that makes a positive impact on the lives of its clients, people and community. She introduced innovative programs such as Volunteer Vacations, Financial Literacy and Virtual Volunteering to drive employee and community engagement.