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Sean O'Brien


212.544.9500 ext. 73

Sean O’Brien is an Associate in the Investment Sales Division of Ariel Property Advisors, responsible for executing the company’s exclusive listings and facilitating business development initiatives throughout New York City. Mr. O’Brien has experience underwriting and marketing a variety of property types including but not limited to: multifamily, commercial, mixed-use, and development assets.

Prior to joining Ariel Property Advisors, Mr. O’Brien interned at Akridge in Washington D.C. in the Development & Acquisitions Departments, during a time when the company was in the midst of a 2.4 million-square-foot mixed use development, located in the heart of the Capitol Riverfront’s Buzzard Point neighborhood.

Academically, Mr. O’Brien received his B.A. in Economics from Bucknell University. While attending, he was a member and team captain of the Division 1 Men’s Lacrosse Team, earning First Team Patriot League honors his junior and senior seasons, as well as being named a USILA All-American during his senior year. He also was an active member in TeamIMPACT, a national nonprofit that connects children facing serious and chronic illnesses with local college athletic teams, forming life-long bonds.

During his leisure time, he plays professional lacrosse in the MLL for the Boston Cannons, as well as playing golf during free time.

He currently resides in Manhattan and can be reached at 212-544-9500 ext. 73 or via email at sobrien@arielpa.com.