IRVINE, Calif., January 5, 2026 — Umberg/Zipser LLP announced today that partner Mark Finkelstein has been elected Managing Partner, becoming only the second managing partner in the firm’s history. Founding partner Dean Zipser, who has served as the firm’s sole managing partner since its inception, will continue his active legal practice while supporting the firm’s leadership transition.
This election reflects Umberg/Zipser’s thoughtful approach to long-term succession and its continued commitment to strategic growth, client service, and firm culture.
“Mark has been an integral part of Umberg/Zipser’s success and evolution,” said Dean Zipser. “He is deeply respected by our partners and clients alike, and he brings a steady, collaborative leadership style that reflects our firm’s values. I am proud of what we’ve built together and confident that Mark is the right person to lead the firm into its next chapter.”
Mark has been a key leader within the firm, and is known for his stellar legal and business judgment, client-first mindset, and ability to navigate complex challenges. As Managing Partner, he will focus on guiding the firm’s long-term strategy while maintaining the culture of excellence and collegiality that has defined Umberg/Zipser since its founding.
“It’s an honor to step into this role and to follow Dean, whose leadership and vision shaped the firm from day one,” said Mark. “Umberg/Zipser has always been about unwavering legal advocacy, a commitment to our community, and working as a team to deliver unmatched service to our clients. I look forward to building on the foundation that Dean tirelessly built for over a decade.”
About Umberg/Zipser LLP
Umberg/Zipser LLP is a leading law firm based in Irvine, California. With a team of highly skilled attorneys, the firm is known for its sophisticated business litigation and intellectual property practices. Umberg/Zipser is recognized for delivering strategic, results-driven solutions tailored to each client’s business objectives.
Media Contact:
Kristina Hawfield
Communications Consultant to Umberg/Zipser LLP
949-278-0973
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