FAIRFAX, Va., July 8, 2015 /PRNewswire/ -- SRA International, Inc., a leading provider of sophisticated IT and professional services to U.S. federal government organizations, announced today that its holding company SRA Companies, Inc. has filed a registration statement with the U.S. Securities and Exchange Commission for a proposed initial public offering of its common stock. SRA Companies, Inc. is the recently renamed indirect parent of SRA International, Inc.