在2013年秋天加入澳门太阳城最新官网澳门太阳城最新网站之前，NAT格雷戈里在业务，他从2005 - 2013年任教芝加哥大学布斯商学院的财经大学临床教授。
Prior to Chicago Booth, he was chairman and CEO of NATCO Group, Inc., a NYSE oilfield equipment and services company. Previously, Gregory held various positions in investment banking, including general partner in mergers and acquisitions at Lazard Freres & Co in the 1980s. For a number of years he was a managing director at a private equity firm, Capricorn Holdings. Gregory serves or has served on several boards of directors, including OCI Partners, Rotech Healthcare, Plainfield Direct, NATCO Group, Mrs. Fields Cookies and Marine Drilling. In the early 1980s, he was chief economist and a vp, financial services at Bechtel Group, a privately owned engineering contractor based in San Francisco. Prior to Bechtel and before graduate school, he had been a foreign affairs analyst and speechwriter at the Congressional Research Service in Washington, DC.