Complex sentence: Onnit has been listed in Austin-American Statesman Top Workplaces in 2015 and was listed as an Austin Business Journal "Best Places to Work" in 2014 and 2016.
Split into simpler sentences: Onnit has been listed in Austin-American Statesman Top Workplaces in 2015. They have also been listed as an Austin Business Journal "Best Places to Work" in 2014 and 2016.