Ripco Real Estate Corp., a commercial brokerage firm, has added three new real estate brokers to its team in the Jericho office.

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Matthew O'Grady, of Glen Cove, was previously a retail lease broker at Cushman & Wakefield's retail services group in Melville.

Doug Weinstein, of Woodbury, formerly served as a managing director at Sholom & Zuckerbrot Realty in Manhattan.

Adam Zeiberg was previously a broker at Crown Retail Services in Manhattan. Zeiberg lives in Westport, Conn.

Christine Petersen has been named vice president of national and international relocation at Daniel Gale Sotheby's International Realty and will work at the corporate office in Cold Spring Harbor. The Huntington resident joins from United Kingdom Sotheby's International Realty in London, where she headed the international referrals and relocation department.

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