Driving tax-efficient strategies and practical solutions for your business success. Aaron Kriss is the Managing Partner of Gesmer Updegrove. Before becoming Managing Partner, Aaron was the head of the Corporate Department and a member of the firm’s Executive Committee.
Daily, Aaron leads the firm while providing strategic tax counsel on transactions at the corporate and founder levels. With extensive expertise in mergers, acquisitions, joint ventures, financings, and international deals, Aaron ensures tax efficiency aligns seamlessly with client business objectives. Aaron also works extensively with private companies and founders on issues surrounding incentive equity grants and compensation. His pragmatic approach emphasizes practical solutions tailored to his clients’ specific needs. Prior to joining Gesmer Updegrove, Aaron worked at Day Pitney LLP and Withers Bergman LLP.
Today, Aaron resides in Connecticut with his wife and three children. He works primarily out of Gesmer Updegrove’s Boston office while also serving clients throughout Southern New England and the New York area.
Publications
Dallas K. Mosier and Aaron Kriss, The Missed 83(b) Election Is Your Company’s Problem Too, Gesmer Updegrove LLP (2026)
Aaron Kriss, How an S Corporation Election May Affect Financing and Exit, Gesmer Updegrove LLP (2026)
Aaron Kriss, The Section 174 Fix Wasn’t the End of the Story, Gesmer Updegrove LLP (2026)
Aaron Kriss, How Earnouts and Deferred Payments Can Lead to Surprising Tax Outcomes, Gesmer Updegrove LLP (2026)
Aaron Kriss, QSBS Planning in 2026: The Small Mistakes That Can Destroy a Massive Tax Benefit, Gesmer Updegrove LLP (2026)
Aaron Kriss and Braeden Anderson, What Changed in 2025 for Crypto Tax?, Gesmer Updegrove LLP (2025)
Aaron Kriss, Massachusetts Voters Narrowly Approve “Millionaires Tax”, Gesmer Updegrove LLP (2022)
Education
University of Virginia, J.D.
University of Miami, B.B.A.
Admissions
New York
Connecticut
Massachusetts
Professional Memberships
American Bar Association
Connecticut Bar Association – Tax Section, Executive Committee
New York Bar Association
International Fiscal Association
Exit Planning Association (XPX)