RICHMOND, Va.–(BUSINESS WIRE)–Harris Williams, a global investment bank specializing in M&A advisory services, announces it advised ADB Companies, LLC and its affiliates (ADB), a leading turnkey provider of telecommunication and utility infrastructure solutions in the United States, on its sale to Warren Equity Partners (Warren Equity). ADB was previously part of the Keeley Companies family of companies. Rusty Keeley, CEO of the Keeley Companies, and Chad Johnson, CEO of ADB, will maintai