A trustee emeritus since 2003 and trustee since 1999, Collins is the retired vice chairman and a management committee member of Citigroup (2000). He has been an advisory board member of Welsh, Carson, Anderson & Stowe, a private equity firm; and past director of Enstar Group, Nokia, Kimberly Clark, BG Group, and Actis Capital LLP. The former chair and ex officio member of the University of Wisconsin Foundation, Collins is also a trustee of the Glyndebourne Arts Trust. He is a graduate of the University of Wisconsin (BBA ’58) and Harvard University (MBA ’61).