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Forvis Mazars announces three new Governing Board members

News Release // 11-05-2025

Forvis Mazars, LLP, ranked among the largest public accounting and consulting firms in the United States, is pleased to announce the addition of Keith Giddens, Tammy Rivera, and Caleb Vuljanic to the U.S. Governing Board, effective November 1.

Giddens, Rivera, and Vuljanic, all managing partners at Forvis Mazars, were elected by their fellow partners to serve three-year terms on the board, which sets the strategic direction of the firm.

“We are pleased to welcome these highly experienced leaders to the Governing Board,” said Chief Growth Officer and Board Chair Tim York. “Having worked with each of them in various capacities for many years, I am confident that Keith, Tammy, and Caleb will bring fresh perspectives and innovative ideas in addition to unique experiences and strengths that will complement those of our existing leadership.”

Keith Giddens

Keith Giddens is the managing partner for Tax Specialty Services. He previously served as the managing partner of the firm’s Charlotte, North Carolina, office and has served in other leadership roles for Forvis Mazars in Washington, D.C., and Greenville, South Carolina. He has extensive experience serving clients as a tax partner and has driven significant revenue and headcount growth throughout his tenure with the firm.

Tammy Rivera

Tammy Rivera is the managing partner of the Colorado-Salt Lake practice unit, which consists of more than 200 team members in the Denver, Colorado Springs, and Salt Lake City markets. She has over 20 years of experience providing assurance and consulting services to various healthcare entities, including governmental and nonprofit hospitals, mental health centers, private equity-backed companies, foundations, and case management organizations.

Caleb Vuljanic

Caleb Vuljanic serves as the Metro D.C. managing partner. He also provides various assurance services to clients in the technology, private equity, and professional services industries. Prior to his Metro D.C. role, he was a member of the firm’s professional standards group, where he was a technical resource for complex accounting and auditing matters.

“For more than 100 years, our partners have managed our firm with vision of always making tomorrow better than today for our team members and clients,” said CEO Tom Watson. “Our new board members exemplify this mindset, and I know they each share a deep sense of responsibility to serves as stewards of our firm so we can pass it along to future generations of partners and team members.”

Additional members of the U.S. Governing Board of Forvis Mazars include: 

Trey Ackerman, national service line leader, Tax; Thomas Boothby, regional managing partner; Mike Coletti, global business leader; Jerry Henderson, regional managing partner, Consulting; Holly Pantzer, national sector leader and managing partner, Private Client; Laura Peth, principal; Karine Philippon, managing partner; Rob Pruitt, chief practice and innovation officer; Sarah Saunders, partner; Gary Schafer, managing partner; JoAnna Simek, assistant managing partner; Victor Wahba, partner; and Brian West, managing partner.

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