Steve Ballmer is co-founder of Ballmer Group and owner of the Los Angeles Clippers NBA basketball team. Ballmer retired as CEO of Microsoft in 2014 after leading the company for nearly 14 years. Ballmer became Microsoft’s CEO in 2000, having served for 20 years in various roles. During his tenure, Microsoft grew to almost $80 billion in revenue and was the third most profitable company in the United States.