MERGERS AND ACQUISITIONS Dolan Media Co., Minneapolis, acquired an additional 7.57 percent membership interest in National Default Exchange, increasing its ownership from 84.67 percent to 92.24 percent. National Default Exchange provides mortgage default processing services and is part of Dolan Media's Professional Services Division.

DEBT AND EQUITY IntriCon Corp., Arden Hills, maker of body-worn medical and electronics devices, will divest its non-core electronics business, Anaheim, Calif.-based RTI Electronics Inc. The plan, which includes an orderly liquidation of all RTI Electronics assets, was approved by the company's board of directors Dec. 29. IntriCon expects to record an estimated charge of $1.4 million to $1.8 million in discontinued operations, of which about $1 million to $1.4 million is non-cash.