Grey Mountain Partners added two new investment professionals, Brad Starkweather and Rick McKenzie.

Starkweather joins Grey Mountain from US Renewables Group, a private equity firm specializing in alternative energy investments, where he was a principal responsible for managing all aspects of due diligence and transaction execution. Previously he was an associate at Centre Partners Management, a private equity firm focused on middle-market leveraged buyouts, and an associate at Lehman Brothers Merchant Banking Partners, Lehman Brothers’ captive leveraged buyout fund. He started his career as an analyst in Lehman Brothers’ Technology Mergers & Acquisitions group.

McKenzie joined Grey Mountain from Jefferies & Company in Charlotte, where he advised companies on M&A transactions and executed debt and equity financings as an analyst in the Consumer & Retail Group.

Grey Mountain Partners focuses on acquiring companies at the small end of the middle market and supporting management teams.