Pandora's (P) co-founder and CEO Tim Westergren has announced that he plans to step down from the music company he founded over 17 years ago.

Westergren served as CEO and President between 2002 and 2004 before taking back the reins of the company in 2016.

Pandora was founded by Westergren, Will Glaser and Jon Kraft in 1999, and went public in 2011, reporting $138 million in revenue that fiscal year.

Tim Westergren will remain in his position until a successor is found.

This article was written by a staff member of TheStreet.