Peter C. Georgiopoulos has served as our Chief Executive Officer since the closing of the 2015 merger on May 7, 2015 and as our Chairman and as one of our directors since December 2008, including prior to and during our Chapter 11 cases. He previously served as Chairman and one of the directors for General Maritime Subsidiary Corporation, which we refer to as "GMR Sub Corp.," or its predecessors from its inception in 1997 until December 2008. From 1997 to 2008, he served as CEO of GMR Sub Corp. or its predecessors, and he served as its President from 2003, following its internal reorganization, until 2008, as well. From 1991 to 1997, Mr. Georgiopoulos was the principal of Maritime Equity Management LLC, or "MEM," a ship-owning and investment company which he founded in 1991. From 1990 to 1991, he was affiliated with Mallory Jones Lynch & Associates, an oil tanker brokerage firm. From 1987 to 1990, Mr. Georgiopoulos was an investment banker at Drexel Burnham Lambert. Prior to entering the investment banking business, he had extensive experience in the sale, purchase and chartering of vessels while working for ship owners in New York and Piraeus, Greece. Mr. Georgiopoulos is a member of the American Bureau of Shipping. Mr. Georgiopoulos is also Chairman and a director of Genco Shipping & Trading Limited, or "Genco," Aegean Marine Petroleum Network, Inc., a company listed on the NYSE and Baltic Trading Limited, or "Baltic Trading," a company listed on the NYSE. He also holds an MBA from Dartmouth College. As a result of these and other professional experiences, Mr. Georgiopoulos possesses knowledge and experience regarding our history and operations and the shipping industry, finance and capital markets, that strengthen the Board's collective qualifications, skills and experience.
John P. Tavlarios has served as our Chief Operating Officer since the closing of 2015 merger on May 7, 2015. He previously served as one of our directors and as our President from December 2008, including prior to and during our Chapter 11 cases until May 7, 2015 and as Chief Executive officer from July 2011 until May 7, 2015. He previously served as a director of GMR Sub Corp. from May 2001 until December 2008. He served as the President and Chief Operating Officer of GMR Sub Corp. from May 2001 until December 2002. Following our internal reorganization, which took effect in December 2002, through December 2008, he served as the Chief Executive Officer of our tanker operating subsidiary, GMM. From its inception in 1997 to January 2000, Mr. Tavlarios served as Executive Vice President of GMR Sub Corp. or its predecessors. From 1995 to 1997, he was affiliated with MEM, a ship-owning and investment company, where he served as Director of Marine Operations. From 1992 to 1995, Mr. Tavlarios was President and founder of Halcyon Trading Company, a consulting firm specializing in international business development with a particular emphasis on the international oil industry. From 1984 to 1992, he was employed by Mobil Oil Corporation, spending most of his tenure in the Marine Operations and the Marketing and Refining divisions. Prior to 1984, Mr. Tavlarios was involved in his family's shipping business, assisting in marine operations. Mr. Tavlarios is a member of the American Bureau of Shipping, the DNV GL North American Committee, the Skuld board of directors and the Board of Trustees of the Seaman's Church Institute. Mr. Tavlarios is also a director of Aegean Marine Petroleum Network, Inc., a company listed on the NYSE. As a result of these and other professional experiences, Mr. Tavlarios possesses knowledge and experience regarding our history and operations, the shipping and international oil industry, that strengthen the Board's collective qualifications, skills and experience.
Leonidas J. Vrondissis has served as our Chief Financial Officer since February 2013 and as our Executive Vice President since May 2012. Leonidas served as our Secretary and Treasurer from May 2012 to February 2013. Prior to that, Leonidas served as our Vice President—Finance from January 2007 to May 2012, including prior to and during our Chapter 11 cases. Leonidas joined our Finance Department in 2001.
Milton H. Gonzales, Jr. has served as Manager and Technical Director of GMM since February 2009 and as Maritime Compliance Officer of GMM since April 2009, including prior to and during our Chapter 11 cases. Prior to that, he served as Senior Vice President—Technical Operations of GMM from August 2005 through February 2009, and as Vice President—Technical Operations from 2004 to 2005. From 2000 to 2004, Mr. Gonzales was Vice President—Marine and Technical Operations of Cunard Line Limited Cruise Company. Prior to that, Mr. Gonzales worked at Sea-Land Service for 14 years. Mr. Gonzales is a member of the American Bureau of Shipping, Lloyd's Register North American Advisory Committee and the Marshall Islands' Registry Quality Council.
Sean Bradley has served as Manager and Commercial Director of GMM since May 2012. Prior to that, he served as the Head of Business Development of GMM from February 2009 through May 2012, including prior to and during our Chapter 11 cases. From January 2008 to October 2008, Mr. Bradley was Director, Chartering & Freight Trading, Europe, of Teekay Shipping based in London. Prior to that, Mr. Bradley served as the Global Chartering Manager at Eiger Shipping SA, Geneva, a subsidiary of Lukoil International Trading and Supply Company. Mr. Bradley originally joined Lukoil International Trading and Supply Company as a member of its product trading team at Lukoil Pan-Americas LLC in 2003.