Mr. Tumminello has extensive experience acting as a fiduciary on behalf of high-net-worth individuals and institutional investors. ​

Prior to joining Dome, John had worked closely with one of the more prominent families in India helping them diversify their holdings into US real estate and private equity investments. Previously, John co-founded Greenlaw Partners, an Orange County-based real estate investment firm. Within four years of inception, Greenlaw raised over $400 million of private and institutional equity and amassed a portfolio in excess of five million square feet.​

John began his career as an auditor at KPMG and also worked at Citibank, where he served as a real estate Investment Officer working with internationally based, high net worth clients of Citi’s Private Bank. ​

John holds a bachelor’s degree from Iona College in New Rochelle, NY, and earned a CPA distinction in New York State. ​