Mergers & Acquisitions

Perennially ranked among the top five firms for M&A globally, as well as in the major regions (Asia, Europe and United States) in which we practice, Weil has helped advise clients on some of the largest and most innovative transactions in the marketplace. In the last year alone, Weil has advised on more than 70 transactions larger than $1 billion for clients in a range of sectors and geographies.

Notable Representations, Key Contacts

Strategic Business Partners in Global M&A

At Weil, we partner with our clients and make it a priority to understand and appreciate their corporate organization and business strategy. We understand that any M&A transaction is part of this overarching strategy and can be the most significant business event in the history of an organization and in the lives of its executives. Our clients include the largest and most sophisticated public and private companies, boards of directors and special committees as parties on any side, and in any context, of the deal. And our decades of experience across industries and throughout geographies allow us to guide our clients through these transformative, and often complex, corporate events.
Our pragmatic, business-focused approach allows us to get the deal done. We offer clients solutions rather than simply pinpoint and analyze legal issues. Our record of success in volume, scope and size of deals speaks to the value we bring to a range of clients throughout the world daily.

Thinking Outside the Box

Clients come to Weil for M&A advice when the stakes are high and the typical game plan won’t do. Weil M&A lawyers know the playbook but also have the creativity, confidence, and experience to know when to rewrite it. Our M&A team has done and seen it all – whether it’s navigating the turnover of a board mid-transaction; helping to bridge the valuation gap between buyer and seller; helping to turn a hostile deal into a friendly transaction; assessing and proactively addressing the complex regulatory schemes across jurisdictions; crafting a sophisticated cross-border joint venture structure to get a deal done in an inhospitable regime or jurisdiction; or juggling multiple contingent transactions for the same client simultaneously.

Significant Recent Global M&A Matters

Adobe Systems Incorporated

Atos S.E.

Brookfield Asset Management Inc.

Busch-Holding GmbH

CEE Stock Exchange Group AG


The Dow Chemical Company

eBay, Inc.

Eli Lilly and Company

ENGIE North America Inc. (f/k/a/ GDF SUEZ Energy North America, Inc.)

Facebook, Inc.

General Electric Company

General Electric and General Electric Capital Corporation

HNA Group

IHS Inc.

IMS Health Holdings, Inc.

Intel Corporation

Interval Leisure Group

Iron Mountain

JAB Holding Company

Kinder Morgan

The Kroger Company

Special Committee of Independent Directors of Ku6 Media Company Ltd.

L’Oréal USA

MGM Resorts International

Nortek Inc.

Oracle Corporation

Transaction Committee of the Board of Directors of Reynolds American Inc.

Safran SA


Signet Group Limited

SoftBank Group Corp.

Special Committee of the Board of Directors of Starz, Inc.

Straight Path Communications Inc.


Univision Communications Inc.

Verizon Communications Inc.

Willis Group Holdings plc

Boards of Directors, Special Board Committees and Governance

We represent Boards of Directors and Special Board Committees of companies ranging from the Fortune 100 companies to mid and smaller cap companies, including representations involving complex M&A transactions, takeover defense, actual or potential conflicts of interest, accounting issues, Sarbanes-Oxley compliance and other matters.

We have substantial experience assisting Boards of Directors and Special Board Committees with internal investigations, governmental investigations and litigation (including securities, class action and derivative litigations arising out of M&A transactions involving affiliated entities).

Nuanced Understanding of Activism and Takeover Defense

Weil is one of the leading firms in the world on Hostile M&A, Takeover Defense and Issues of Shareholder Activism. We have vast experience working on sensitive matters involving hostile M&A, proxy fights and other efforts for corporate control. We take a multidisciplinary approach – which involves cross-disciplinary team efforts among our M&A, Public Company Advisory Group and Securities Litigation lawyers – and work successfully and proactively in situations involving all manner of active shareholders. We do not engage adversarially with active shareholders but rather seek to understand their objectives and help our clients work to achieve resolution that is successful to all parties.
Hostile M&A diagram

60+ Deals over $1B


Top 10 Globally

...and in U.S., Europe and U.K.

Year-End 2016 League Tables


M&A Lawyers Globally


in Deal Volume Globally 2016

Key Contacts

Michael Aiello

Michael J. Aiello


New York

Howard Chatzinoff

Howard Chatzinoff


New York

Frederick S. Green

Frederick S. Green


New York

Michael E. Lubowitz

Michael E. Lubowitz


New York

See list of lawyers globally

Shortcut Links

Deal Compass

Corporate Department Chairman Michael Aiello Interviewed by Bloomberg Television on M&A Activity

Advised on more than 70 $1 billion+ deals in the last 12 months

Advised on $400B+ in announced transaction value in 2016, accounting for 11% of global market share

Ranked Among the Best Corporate Law Firms by Directors and General Counsel

NYSE Governance Services/FTI Consulting, America's Best Corporate Law Firms, 2016

Received “standout” ranking in category of Managing Complexity and Scale for its role advising General Electric in one of the largest-ever corporate transformations

Financial Times Innovative Lawyers Report North America 2016

Received “commended” ranking in category of Managing Complexity and Scale for its role advising Dow Chemical on its planned merger with DuPont and credited for helping to create a unique governance structure that will combine about 900 product lines

Financial Times Innovative Lawyers Report North America 2016

Ranked Top 5 for U.S., France and Poland M&A

mergermarket Year-End 2016 M&A League Tables

Weil Named an M&A “All-Star” for having won M&A Practice Group of the Year in 3 of the past 5 years

Law360 2015

Corporate Department Chairman Michael Aiello and partner Keith Flaum Named M&A “Trailblazers”

National Law Journal

Corporate Chairman Michael Aiello Named M&A “MVP”

Law360 2016

Jane Ross Recognized Among Women Leaders in Tech Law

The Recorder

Ranked Tier 1 in M&A category in the United States


Ranked Tier 1 for M&A in Hong Kong

Asian Legal Business

Awards and Recognition, Speaking Engagements, Guides and Resources, Latest Thinking, Firm News & Announcements

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