Michael Cohen, co-founder of the venture capital firm Blackstone Group, will join the Forbes author’s list as a contributor.
Cohen’s book will be co-authored with fellow venture capitalist Michael Milken, and Milken is the founder of the investment bank Blackstone.
In addition to being co-authors of Forbes’ new book “The Lean Startup,” Cohen, who is the former chief executive of the online advertising company Zappos, also co-founded the online education company Khan Academy.
Cohen was a contributing editor at Forbes and the author of the “Lean Startup” book.
Cooper, 56, is an author and investor in a number of startups, including PayPal, Netflix and Snapchat.
He has authored dozens of books and more than 20 business books.