Mr. Marangu is owner and director at Soyken Limited, and represents the firm on the Soy Afric board. Mr. Marangu is a private investor and Director in several forestry, energy and real-estate companies in sub-Saharan Africa. Since 2003, Mr. Marangu has been a Director and major shareholder in Green Resources AS, the largest afforestation company in Africa. He has been involved in the physical commodity sector for almost 20 years, having worked at Glencore AG for more than 12 years in London as a Market Analyst and Physical Oil Trader.

Prior to this period, Mr. Marangu was a Financial Analyst at Morgan Stanley and Commodity Trader Trainee at Philipp Brothers in New York.Mr. Marangu earned his Bachelor of Arts degree in Economics from Vassar College, in 1984, a Masters of Philosophy in Economics and Politics of Development from Cambridge University, United Kingdom in 1987 and a Masters of Business Administration from The Wharton School of the University of Pennsylvania in 1989. He is a native of the U.S. and Kenya.