Portland-based Diversified Communications has purchased The Sleeter Group, a California company that consults with and provides educational opportunities to small-business accountants.

Diversified already provides similar services to corporate finance officers and accountants through its Institute of Finance and Management. The Sleeter Group runs an annual conference, networking forums, webinars, newsletters and digital and print educational materials. Diversified said The Sleeter Group will operate from the company’s Portland office.

The purchase, announced Tuesday, builds on two other acquisitions Diversified Communications announced this quarter – D4 Medical Analytics, a U.S.- and British-based health information technology company, and the Brisbane Fitness & Health Expo, purchased by Diversified’s Australian operation in February.

Diversified Communications is a media, education and information company that employs more than 200 people in Portland and operates WABI-TV in Bangor.