Gary Michael Green (born September 8, 1965) is an American businessman and entrepreneur. He is CEO of Alliance Building Services, one of the largest privately held building service providers in North America. Green also owns sports franchises for teams in Minor League Baseball and United Soccer League, including the Richmond Flying Squirrels, Omaha Storm Chasers, Montgomery Biscuits and Union Omaha.
Green was born in Manhasset, New York and attended Great Neck North High School in Great Neck, New York and graduated in 1983.
Green attended Union College in Schenectady, New York for one year (1983–1984) before transferring to University of Vermont in the fall of 1984. He traveled to Sydney, Australia in his senior year where he studied Australian politics at Macquarie University. Green graduated from University of Vermont in 1988 with a B.A. in political science. He returned to New York City from Australia a year later and enrolled in New York University Stern School of Business where he earned an M.B.A. in finance in 1991.
After completing his M.B.A., Green worked as a real estate broker for Abrams Benisch Riker and Riverbank Realty. He also taught real estate finance in the Executive Division of New York University Stern School of Business.
Green then worked for his family’s real estate company, where he launched and ran its brokerage division. As vice president, he played a role in the redevelopment of the company’s commercial building portfolio.
In 1992, at the age of 26, Green founded Alliance Building Services. Green formed First Quality Maintenance, a subsidiary of Alliance, out of a frustration with mediocre janitorial service companies that overcharged landlords and tenants. He wasn’t satisfied with just mimicking an “old guard” business; he wanted to change the business model.
In 1997, Alliance bought Classic Security and acquired a lighting and electrical company as a complement to the other business under Alliance. After the September 11, 2001 terrorist attacks on the World Trade Center, Alliance Building Services’ security business took a major role in protecting the city and providing cleaning services in the aftermath.
Alliance acquired Bright Star Messenger Centers in 2001. In 2008, Alliance purchased Onyx Restoration and Painting. In 2009, Alliance provided maintenance services for the inaugural seasons of the new Yankee Stadium and Citi Field, the home of the New York Mets. Alliance provides cleaning services to the Empire State Building as well.
Alliance is one of the largest privately held building service providers in North America, with approximately 5,000 employees.