Jack Gerard, who has been CEO of the American Petroleum Institute (API) since 2008, will step down when his current contract ends in August, the trade association said. "Until then, he will continue to direct the association's work and assist in the search for a new CEO," API said. Prior to his time at API, Gerard served as president and CEO of the National Mining Association and the American Chemistry Council. He also worked for almost a decade in the U.S. Senate and House. During his tenure, API membership grew by almost 50%, and the organization tripled its growth in global markets. Two years ago, Gerard oversaw the merger of API and America's Natural Gas Alliance.