Board of Directors

Edward G. Weiner

President & Chief Executive Officer

Edward Weiner has been with the Company since 1987 and was the Chief Financial Officer from 1990 and Executive Vice President and Chief Operating Officer from 1995 to 2018. He graduated from the University of Miami in 1977 with a Bachelor’s degree and received a J.D. from Boston University Law School in 1980. He is also a certified public accountant (CPA).

Fred M. Lowenfels

General Counsel Emeritus

General Counsel Emeritus. Fred Lowenfels joined the company as General Counsel in 1974. He graduated from Harvard College in 1965 with a Bachelor’s degree and from Harvard Law School in 1968 with a J.D. He was a Fulbright Scholar in Brussels, Belgium, from 1968 to 1969.

Oliver K. Stanton

Senior Vice President

Oliver K. Stanton is a Senior Vice President and minority owner of Trammo, Inc. and a member of the Board of Directors. He has been employed by the company since 1987. He graduated from Tufts University with a Bachelor’s degree in 1987.

Louis Epstein

Senior Vice President & General Counsel

Louis Epstein joined the Company in 1992. Prior to joining Trammo he worked for the law firm Reid & Priest, specializing in international arbitration and litigation.  He is a graduate of Columbia University and of the University of Pennsylvania Law School.

Michel Dietlin

Head of the NH3 Division, 1982 to 2013

Michel Dietlin, a graduate from the French Business School H E C , started to work in international liquid gas trading and transportation in 1969, and joined Trammo in 1977.  In 1982, he was appointed Head of Transammonia’s NH3 Division, a position which he held up to his retirement in July 2013.

Robert Lovett

Senior Vice President & Chief Accounting Officer

Robert Lovett joined the company in 1980 and became Chief Accounting Officer in 2005. He graduated from Fairleigh Dickinson University with a Bachelor’s degree in accounting in 1974.He also earned a Master’s degree (MBA) in International Finance from the same university in 1984.

Dudley Cox

Senior Vice President

Dudley Cox joined the company in 1979. He has worked in London, New York and currently is based in Dubai.

James H. Benfield

Senior Vice President and Treasurer

James Benfield joined the Company in 1980.  Prior to joining Trammo, he was employed by Manufacturers Hanover Trust in New York from 1975 to 1980.  He became an officer of the Company in 1984. James Benfield graduated from Union College, Schenectady, NY in 1975 with a Bachelor’s degree and received an M.B.A. in Finance and International Business from New York University in 1982.

Vildan Bekirov

Executive Vice President, Head of the Sulfur Division

Vildan Bekirov, a graduate from the Moscow Institute of Physics and Technology and Emory University's Goizueta Business School in Atlanta, GA, joined Trammo in 1996. He was appointed Head of the company's Sulfur Division in 2007.

Christophe Savi

Senior Vice President and Head of the NH3 division

Christophe Savi joined Trammo in 2005 as Financial Controller, became Chief Operating Officer of the Ammonia Division in 2013 and assumed his current position in 2014. He holds a Master’s Degree in Finance and Marketing from the Business and Management School, Paris XVII.

Brent Hart

Brent Hart has been with the company more than 25 years. He was a member of TFI’s Board of Directors and Executive Committee, and served on the Board of the Nutrients for Life Foundation.

Corporate Management

Edward G. Weiner

Chief Executive Officer
Shareholder Representative

William E. Markstein

Senior Vice President,
Chief Financial Officer


James H. Benfield

Senior Vice President,

Donald V. Madden

Vice President,
Finance and Treasury

Louis Epstein

Senior Vice President,
General Counsel

​Robert​ C. Lovett
Senior Vice President, 
Chief Accounting Officer​
Benjamin A. Tan
Senior Vice President, 
Chief Information Officer
Nicholas J. Wilson
Vice President,
Chief Risk Officer​
Dudley R. W. Cox

Senior Vice President, Administration

Product Management

Christophe Savi

Senior Vice President & 
Board Member

Anhydrous Ammonia & Low Density Ammonium Nitrate

Vildan Bekirov

Executive Vice President &
Board Member


Sarah Terrell

Senior Vice President, Trading

Sulfuric Acid

Timothee Bediou

Vice President, Trading

Petroleum Coke

Jeffrey D. Minnis

President, North America, Trading

Nitric Acid