Denis O’Brien

President of O’Brien Retirement Investment Group

With over four decades of experience, Denis has dedicated his career to helping individuals and families achieve their financial goals and retire with confidence. His deep expertise in retirement planning and the financial markets allows him to take a holistic, client-centered approach—crafting personalized strategies that address both common and complex financial situations.

Denis and his wife of 30 years, Lori, reside in Mystic, Connecticut, where they raised their three sons, Cutter, Justin, and Beau. They now enjoy spending time with their three granddaughters and traveling to National Parks together.

A passionate reader, Denis has a particular interest in spy and thriller novels. He is also a devoted fan of UConn Men’s and Women’s Basketball.

Denis has been actively involved in his community for many years. His past service includes roles on the Town of Groton Retirement Board, the vestry at St. Mark’s Episcopal Church in Mystic, the Town of Groton Representative Town Meeting, and leadership positions with the New London Public Library and the New London County Historical Society. He has also proudly contributed to local youth sports programs.

Beau O’Brien, CFP®

Vice President of O’Brien Retirement Investment Group

Beau brings a lifelong passion for financial markets and personal finance to his role as a financial advisor and planner. Raised around his father’s business, he developed an early appreciation for the value of thoughtful financial planning. After building his career in New York City’s technology sector, Beau returned to his roots and joined Beau Retirement Investment Group in 2021, combining his technical background with a desire to help individuals and families achieve financial confidence.

Beau is dedicated to delivering personalized, practical advice and exceptional client service. He takes pride in helping clients gain clarity, control, and peace of mind in all aspects of their financial lives.

Beau is a CERTIFIED FINANCIAL PLANNER™ Professional.

Born and raised in Mystic, Connecticut, Beau now resides in nearby Stonington. Outside the office, he enjoys playing guitar, spending time outdoors, and following his favorite teams—UConn Basketball, the New York Yankees, and Chelsea FC. He’s also passionate about film and screenwriting.

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