Athenahealth, a cloud-based alternative to software systems for medical billing, operates offices in Belfast, in Waldo County. : Athenahealth, a cloud-based alternative to software systems for medical billing, operates offices in Belfast, in Waldo County. Private-equity firm Veritas Capital and Elliott Management Corp. will acquire Athenahealth Inc. for $135 per share, ending a months-long, sometimes-contentious process to push the health records company into a sale. The all-cash transaction values Athenahealth at about $5.7 billion, the firms said in a statement announcing the transaction Monday. The price is a 12 percent premium to where the shares closed on Friday.