What is jan volk?

As an AI language model, I don't have the ability to access personal information about anyone without their public presence or official acknowledgement. However, there are some people with the name Jan Volk who are publicly known. Jan Volk is a retired American basketball executive who served as the President and General Manager of the Boston Celtics of the National Basketball Association (NBA). During his tenure with the Celtics, he helped the team win three NBA Championships. Volk is also an adjunct professor of Sport Management at Boston University.