Michael Klein Makes Wall Street Return with Bumper Share Sale

A little over a year after his plans to revive Credit Suisse’s investment bank fell apart, Michael Klein is back with a key role on the year’s biggest share sale that underscores the veteran dealmaker’s strong ties to Saudi Arabia.

M. Klein & Co., the boutique bank led by the Wall Street veteran, is serving as one of the independent financial advisers to the kingdom on its plans to sell shares in its giant oil company in a deal that could raise as much as $12 billion.

Michael Klein

Photographer: Al Drago/Bloomberg

That’s given Klein, along with his counterparts at Saudi Arabia’s ...