Greenhill

Greenhill does not invest proprietary capital. Instead, advisory decisions are driven by its senior managing directors across sectors and geographies. Post-acquisition, Kevin Costantino and David Wyles are the most senior operational leaders overseeing the firm's advisory franchise within Mizuho.

No, Greenhill was acquired by Mizuho Financial Group in May 2023 for approximately $550 million. It now operates as a subsidiary of Mizuho, though it retains its own brand and advisory focus. The acquisition marked the end of Greenhill's 19-year run as a publicly traded independent.

Greenhill itself does not lend or underwrite securities — its advisory model is free of balance-sheet conflicts. However, as part of Mizuho, clients of the combined platform can access capital markets and lending through the parent bank if they choose, which represents a structural shift from Greenhill's pure-advisory independence.

Greenhill operates as a distinct subsidiary of Mizuho, with its own leadership, brand, and advisory mandate. Integration efforts have focused on pairing Greenhill's M&A and restructuring capabilities with Mizuho's balance sheet and client relationships, particularly in cross-border transactions between Japan and Western markets.

Greenhill focuses on three core areas: M&A advisory, restructuring and recapitalization, and private capital advisory. The firm does not manage investment portfolios, lend, trade, or provide research — a deliberate scope that has been central to its identity since 1996.