MUNCIE, Ind.–(BUSINESS WIRE)–#ARM–Ontario Systems (“Ontario”, or “the Company”), a leading provider of enterprise software that automates complex workflows and accelerates revenue recovery for clients in the healthcare, accounts receivable management (ARM), and government markets, has entered into a definitive agreement to partner with New York-based New Mountain Capital, a leading growth-oriented investment firm with over $20 billion in assets under management. With its purchase of a majority sha