Grey Mountain Partners, a Boulder, CO-based private equity firm, has promoted Ben Ault to managing director. He joined the firm in 2004 and helped build its presence in the lower middle-market. Prior to joining Grey Mountain, Mr. Ault worked with the Mergers & Acquisitions group of Goldman Sachs in New York. His primary focus with Grey Mountain is on deal sourcing, as well as working with the firm's Executive Sponsorship Program. The firm looks to make equity investments of up to $75 million across a wide range of industries, including financial services, diversified manufacturing, specialty chemicals, healthcare technologies and hydrocommerce, among others.