Mr. Geller co-founded GEM in 1994 and sets corporate strategy. For GEM Realty Properties, Mr. Geller is involved in acquisitions, portfolio management, and valuation. For GEM Realty Securities, Mr. Geller is involved in all aspects of the investment process.

Mr. Geller received a Bachelor of Science in Accounting from the University of Illinois at Urbana-Champaign and passed the Uniform Certified Public Accountant Examination.