
Proskauer Rose LLP advises on complex cross-border structuring issues such as withholding tax, permanent establishment risks, and transfer pricing. The firm has a robust mergers and acquisitions offering in which it regularly advises on multiple jurisdictional and pricing issues. Team lead Amanda Nussbaum, sits in the New York office and assists international clients with both taxable and tax-free mergers and acquisitions, real estate transactions, and capital markets offerings. New York-based David Miller focuses his broad practice on the taxation of financial instruments and derivatives, cross-border lending, and international mergers and acquisitions while Mark Hamilton handles international mergers and acquisitions, cross-border investments, and structured financing arrangements for a client roster consisting of private equity funds, commercial and investment banks, and insurance companies. In Los Angeles, Robert Friedman’s practice covers public and private mergers, acquisitions, joint ventures, and electric and gas utility tax issues. In Boston, Stephen Severo represents corporate, private equity and investment fund clients in connection with all tax-related aspects of investments, debt restructurings, and securities issuances.
Legal 500 Editorial commentary
- Profile
Accolades
Client satisfaction
Testimonials
Collated independently by Legal 500 research team.
‘Amanda Nussbaum is by far the top tax lawyer we have ever worked with, across sectors. Her knowledge and ability to communicate and educate tax matters, complex and conventional, is unparalleled. Select your favorite superlative, and that would be the word we would best use to describe the Proskauer tax team.’
‘The entire team is exceptionally talented. However, Amanda Nussbaum differentiates Proskauer from all other tax groups we have ever worked with.’
Key clients
- Adams Street Funds
- Atomico
- Ridgemont Equity Partners
- Lumina Capital Management
- Vantage Data Centers
- Lexington Partners
- StepStone Group Inc.
- Hollyport Capital
- PineBridge Investments
- Sports Content Creation LLC dba X Games
Work highlights
- Advised Atomico, a European venture capital firm, on the closing of funds Atomico Growth VI and Atomico Venture VI. Atomico’s dual-fund strategy closed with $1.24 billion in commitments.
- Advised Arkema in its agreement to acquire Dow’s flexible packaging laminating adhesives business.
- Advised Vantage Data Centers, in the closing of its $9.2 billion equity investment led by investment vehicles managed by DigitalBridge Group, Inc. and Silver Lake.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head
Amanda Nussbaum
Other key lawyers
David Miller; Mark Hamilton; Robert Friedman; Stephen Severo