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Greenhill & Co.
Michal Katz runs Mizuho | Greenhill, a 1,000-banker advisory franchise backed by Mizuho Financial Group's $2 trillion balance sheet.
Greenhill & Co.
Mizuho Financial Group acquired Robert F. Greenhill's eponymous independent advisory firm in 2023, folding the operation into its Americas banking division. Greenhill spent decades building a reputation for senior-led M&A, restructuring, and private capital advisory; the acquisition placed those capabilities on top of Mizuho's existing corporate and investment banking platform, which already employed approximately 3,650 people in the Americas. The combined Mizuho | Greenhill team operates across nine industry coverage groups — from Consumer & Retail and Healthcare to Technology, Media & Telecom — while maintaining dedicated product desks for M&A, leveraged finance, equity and debt capital markets, derivative risk solutions, restructuring, and private capital advisory. Its private capital advisory unit, strengthened by Mizuho's 2022 purchase of Capstone Partners, runs primary fundraising and secondary liquidity solutions for private equity, credit, real asset, and infrastructure managers. Regional execution spans the US, Canada, Latin America, EMEA, and APAC. Mizuho Americas entered 2026 carrying the Crisil Coalition Greenwich award for Best Bank in Corporate Banking in the US. The broader banking division, led by Michal Katz, supports corporate lending, bridge loans, securitization, and subscription-line facilities, while the debt capital markets group covers investment-grade and sustainable finance issuance. Equity capital markets capabilities extend to IPOs, follow-ons, equity-linked instruments, and SPACs. Recent mandates earned IJGlobal's North America Financial Advisor of the Year honor in 2025 and IFR's Americas Loan House of the Year in 2024. This structure is a bank-owned advisory business masquerading as a partnership — Greenhill retains its senior banker DNA but underwrites with a Japanese megabank's balance sheet. That duality lets the firm commit capital for acquisition and LBO financing while pitching for M&A and restructuring engagements, a combination few independent boutiques can match.
General information
Firm type
Bank / Wealth / Trust
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
United States
City
New York
Corporate office
New York, NY, United States
Principals
Michal Katz
Head of Investment and Corporate Banking
Sector focus
Frequently asked questions
How does Greenhill operate after the Mizuho acquisition?
Greenhill functions as the M&A, restructuring, and private capital advisory arm inside Mizuho's Americas banking division. The firm retained its brand identity — it markets as 'Mizuho | Greenhill' — while gaining access to the parent's $2 trillion balance sheet for underwriting and lending. Michal Katz heads the combined investment and corporate banking group.
Does Mizuho | Greenhill place its own capital into deals?
Yes. As part of Mizuho Financial Group, the platform can deploy corporate and leveraged finance balance-sheet capacity alongside its advisory work. Its product set includes bridge loans, subscription lines, leveraged loans, high-yield bonds, and project finance — all backed by a bank rated A by major agencies.
What is the firm's private capital advisory capability?
Private capital advisory sits within the advisory group and covers primary fundraising and secondary liquidity solutions for private equity, private credit, real asset, and infrastructure managers. This unit was reinforced by Mizuho's 2022 acquisition of Capstone Partners, an established placement agent with a global investor network.
Which industries does the firm actively cover?
Nine industry groups anchor its coverage model: Consumer & Retail, Energy, Financial Institutions, Financial Sponsors, Healthcare, Industrials, Power & Utilities, Real Estate, and Technology, Media & Telecom. Dedicated product teams — including restructuring, leveraged finance, and ECM — execute mandates across those verticals.
How many professionals work in the banking division and where are they located?
Mizuho Americas reports almost 1,000 bankers in the Banking Division, spread across 22 offices that cover the US, Canada, Latin America, EMEA, and APAC. The parent firm employs approximately 65,000 people in over 800 offices across 40 countries.
Is there a separate Greenhill balance sheet or is it fully consolidated?
Greenhill & Co. is fully acquired and operates as a division of Mizuho Americas, not as a standalone partnership. There is no separate Greenhill balance sheet — all capital commitments come from Mizuho Financial Group's corporate treasury and lending books.
What is the firm's posture on co-investments alongside external GPs?
The firm does not run an in-house private equity co-investment program in the family-office sense. Its private capital advisory group helps GPs fundraise; the banking division participates in deal financings as an arranger and underwriter. Balance-sheet capital supports client-led transactions, not proprietary direct investing.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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