Mr. Peña was founder, former Chairman, President and Chief Executive Officer of Great Western Resources Inc., (GWRI), a Houston-based natural resource company public on the London Stock Exchange (LSE). At the time of Mr. Peña's decision to retire, GWRI was operational in the US, the Gulf of Mexico, the UK and South America and had a public market capitalization of $450 million, with interests in coal, and oil and gas exploration and production, drilling and construction pipeline. At the time the company was acquired in January 1997, he was the biggest individual shareholder.