Greg died on August 7, 2020 at the age of 53, following a two year battle with renal cell carcinoma. He is survived by his wife of 26 years Cece Rey Hallisey, his daughters Sydney, Eleanor, and Maria, and the two other males in the household, their dogs Louie and Schmidt. A private interment will be held in Georgetown, Washington DC.

Greg was born at Walter Reed Hospital in Bethesda, MD. As the son of a Marine Corps Lieutenant Colonel, he grew up in multiple places including spending his elementary school years in Twenty-Nine Palms, California. He graduated high school from Riverside Poly in California, where he swam and played water polo. He moved to the East Coast to play water polo and earn his Bachelor’s Degree at Brown University. After working in Washington for the House Banking Committee, Greg earned his MBA at Dartmouth College’s Amos Tuck School of Business. He had a business career in strategy and finance at Citibank, Yum Brands, LG&E, Eaton Manufacturing, and Raytheon.

Second only to his family, whom he loved dearly, Greg’s passion was playing and refereeing water polo, from 12 year olds to the elite college level. He could watch televised games for hours on end, critiquing both the ball handling and the officiating. He was beloved by coaches, players, and his fellow referees.

In addition to his wife and daughters, Greg is survived by his mother, Jane Hallisey of Rock Hill, SC; his siblings Leigh Holt, Bill Hallisey (Julia), and Michael Hallisey (Vera); his mother-in-law Lisa Rey; his brothers-in-law Tony Rey (Lynne) and Mike Rey (Cat); 12 nieces and nephews; and numerous additional family and friends. He is pre-deceased by his father, William Hallisey; his brother-in-law Edwin Holt; and his father-in-law Nicholas Rey.

We will all miss his love for his family, his sense of humor, his supreme negotiating skills, and his passion for chocolate chip cookies and angel food cake with strawberries and whipped cream made by his daughters.