Greenhill’s $550 Million Sale to Mizuho Challenged by Investor

Top managers and directors of Greenhill & Co., which in May announced a $550 million deal for Mizuho Financial Group Inc. to buy the investment bank, failed to disclose significant financial information to investors, according to a shareholder lawsuit.

The shareholder alleges in the suit, filed Thursday in Manhattan federal court, that a proxy statement Greenhill filed on June 30 “misrepresents and/or omits material information that is necessary for the company’s stockholders to make an informed decision” on whether to vote for the deal.

Founder Robert Greenhill in 2004

Photographer: Daniel Acker/Bloomberg

The investor, Ryan O’Dell, especially criticizes Greenhill’s reliance on metrics such as adjusted Ebitda, ...