Zynex, Inc. announced that on February 1, 2016, Mr. Michael Hartberger, commenced employment at the company to serve as the company's chief operating officer. As such, Mr. Hartberger will report to the company's chief executive officer, Thomas Sandgaard, and Mr. Hartberger will be in charge company's operations, principally Zynex Medical, Inc. electrotherapy products. Mr. Hartberger will also assist Mr. Sandgaard in dealing with the company's announced liquidity challenges due to low revenues and limited availability of borrowings under its existing revolving credit facility.

Prior to joining the company, Mr. Hartberger previously worked as chief operating officer and chief financial officer for Peak 10 Publishing LLC. From 2013 to 2015, Mr. Hartberger worked as the chief operating officer of Summit Container Corporation.