Arrhythmia Research Technology

Fitchburg's Arrhythmia Research Technology has appointed an independent director at the urging of an activist investor who holds 11 percent of the company's stock.

Citing difficulty in the global market, Arrhythmia Research Technology of Fitchburg reported a loss of $266,000 in the third quarter of 2015.

Fitchburg-based Micron Products, Inc. has expanded its sales organizations with two high-level appointments designed to grow its contract manufacturing, the company announced Wednesday.

Medical device manufacturer Arrhythmia Research Technology of Fitchburg reported a 39 percent decline in gross profits for the first quarter of 2015 compared with the first quarter of 2014.

Medical device manufacturer Arrhythmia Research Technology of Fitchburg saw a nearly 13-percent jump in net sales last year and turned its first profitable year since 2010, its CEO said Friday.