Who We Are

Philip V. Oppenheimer founded the firm in April of 1984. From 1966–1984 Mr. Oppenheimer was a Senior Vice President of A.G. Becker (Warburg Paribas Becker, Inc.), an investment banking firm. Mr. Oppenheimer received a B.A. from St. Lawrence University, attended Fordham University Law School and served in the U.S. Marine Corps Reserve. Mr. Oppenheimer has served on the NASD District Committee, the NASD District 10 Nominating Committee, the NASD National Adjudicatory Council, the NASD Chairman’s Advisory Council and the FINRA Small Firm Advisory Board. Mr. Oppenheimer served on the Small Firms Committee of the Securities Industry and Financial Markets Association.

Carl K. Oppenheimer joined the firm in 2005. Prior to joining the firm, Mr. Oppenheimer was a Principal at Milestone Venture Partners, a New York based early stage venture capital firm. Preceding Milestone Mr. Oppenheimer worked in the business development group of Sears, Roebuck and Company and focused on key strategic M&A transactions. From 1993 through 1997 Mr. Oppenheimer worked in China and Hong Kong in various operating roles in the hotel management and electronic manufacturing industries. Mr. Oppenheimer served on the FINRA District 10 Committee from 2010 to 2013. He received a B.A. from St. Lawrence University in 1992 and an M.B.A. from the University of Chicago in 1999.

John Koller joined Oppenheimer + Close in 2005. Prior to joining the firm, Mr. Koller was employed by Value Line for six years, first as a securities analyst and then as a portfolio manager. Mr. Koller has also been employed by Charles Schwab & Co. as a broker and team manager, and by Grant’s Investor, an online affiliate of Grant’s Interest Rate Observer, as an analyst. Mr. Koller earned a Bachelor of Arts degree in English Literature from the University of Scranton, in 1990.

Mark H. Close was associated with Oppenheimer + Close from October 1993 through October 2001 and rejoined the firm in April 2005. Before rejoining the firm, he was a registered principal with MML Investor Services and an associate with the Investment Advisor at MassMutual. Prior to 1993 Mr. Close was Director of Domestic Operations of Regent Sports Corporation, a privately held manufacturer and distributor of sporting goods. While at Regent Sports he was Chief Operating Officer of their wholly owned Mexican subsidiary. Mr. Close received his undergraduate degree in business administration from New York University.