Jeffrey S Lewis

Jeff Lewis’ practice focuses on domestic and international business and financing transactions. He has advised private and public sector clients in connection with mergers and acquisitions, joint ventures, and private equity investments. Jeff has substantial experience in the natural resources and energy sectors.

Career

Joined firm, 1987; became Partner, 1995. Columbia University School of Law (JD) 1986; Williams College (BA) 1983.

Professional Memberships

Member of the Bar in New York.

Chambers Review

Provided by Chambers

Chambers Global Guide

Corporate/M&A - Latin America - International Counsel

Band 1

Individual Editorial

Distinguished partner Jeffrey Lewis is regularly sought out for his exceptional regional expertise, especially in matters concerning the Chilean and Colombian markets. He acts at the forefront of the corporate and M&A space, regularly advising industry giants on sophisticated M&A transactions and joint venture formation.

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Mining & Metals - USA

Band 1

Individual Editorial

Jeffrey Lewis routinely handles complex acquisitions and joint ventures for his mining clients. He offers strength in both domestic and international transactions.

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Corporate/M&A (International Firms) - Brazil

Band 1

Individual Editorial

Jeffrey S Lewis leads some of the most prominent cross-border transactions. The New York-based partner is seasoned in Brazil-related matters and is a known and respected figure in the market.

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Corporate/M&A - USA

Foreign expert in Latin America-wide

Individual Editorial

Jeffrey Lewis is highly experienced in advising clients on Latin American deals. His expertise covers M&A, among other deals.

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Strengths

Provided by Chambers

Jeffrey Lewis is one of the best lawyers in the M&A market and a great negotiator.

Corporate/M&A respondent
Chambers Global Guide

Jeffrey Lewis is able to be a step ahead; his insight is comprehensive. He's capable of handling issues of a very high complexity with great solidity.

Corporate/M&A respondent
Chambers Global Guide

Jeffrey is a brilliant lawyer. He provides outside-the-box solutions to very complex situations.

Mining & Metals respondent
Chambers Global Guide

Jeffrey is exceptional, pragmatic and strategic. He is a true expert.

Mining & Metals respondent
Chambers Global Guide

Jeff is super business-orientated and is responsive, treating clients as a priority.

Mining & Metals respondent
Chambers Global Guide

He is really quick and smart.

Mining & Metals respondent
Chambers Global Guide

I would highlight Jeffrey as a great partner to our company. He is a true expert and is closely involved in our affairs.

Corporate/M&A (International Firms) respondent
Chambers Global Guide

Jeffrey is our main partner and we interact often with him. He is a very hands-on lawyer.

Corporate/M&A (International Firms) respondent
Chambers Global Guide

Jeffrey Lewis is a true M&A ace, consistently demonstrating deep knowledge, agility and an exceptional ability to successfully conduct complex negotiations.

Corporate/M&A (International Firms) respondent
Chambers Global Guide

Jeffrey Lewis is one of the best lawyers in the M&A market and a great negotiator.

Corporate/M&A respondent
Chambers Global Guide

Jeffrey Lewis is able to be a step ahead; his insight is comprehensive. He's capable of handling issues of a very high complexity with great solidity.

Corporate/M&A respondent
Chambers Global Guide

Jeffrey is a brilliant lawyer. He provides outside-the-box solutions to very complex situations.

Mining & Metals respondent
Chambers Global Guide

Jeffrey is exceptional, pragmatic and strategic. He is a true expert.

Mining & Metals respondent
Chambers Global Guide

Jeff is super business-orientated and is responsive, treating clients as a priority.

Mining & Metals respondent
Chambers Global Guide

He is really quick and smart.

Mining & Metals respondent
Chambers Global Guide

I would highlight Jeffrey as a great partner to our company. He is a true expert and is closely involved in our affairs.

Corporate/M&A (International Firms) respondent
Chambers Global Guide

Jeffrey is our main partner and we interact often with him. He is a very hands-on lawyer.

Corporate/M&A (International Firms) respondent
Chambers Global Guide

Jeffrey Lewis is a true M&A ace, consistently demonstrating deep knowledge, agility and an exceptional ability to successfully conduct complex negotiations.

Corporate/M&A (International Firms) respondent
Chambers Global Guide

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Jeffrey S Lewis

Global Guide 2026

Corporate/M&A + 3 more rankings

About

Practice Areas

Career

Professional Memberships

Chambers Review

Chambers Global Guide

Corporate/M&A - Latin America - International Counsel

Individual Editorial

Mining & Metals - USA

Individual Editorial

Corporate/M&A (International Firms) - Brazil

Individual Editorial

Corporate/M&A - USA

Individual Editorial

Strengths

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Africa-wide

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