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 60 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.

The Board of Directors of Axiall Corporation

Brookfield Asset Management Inc.

CBS Corporation

CEE Stock Exchange Group AG

Delta Topco Limited (the parent company of Formula One)


The Dow Chemical Company

eBay, Inc.

Eli Lilly

Facebook, Inc.

G&K Services, Inc.

GDF SUEZ Energy North America

General Electric and General Electric Capital Corporation

General Electric and Synchrony Financial

Genworth Financial

HNA Group

IHS Inc.

IMS Health Holdings, Inc.

Intel Corporation

Interval Leisure Group

Iron Mountain

ITI Media Group Limited

JAB Holding Company

J.P. Morgan and Perella Weinberg as financial advisors to AT&T Inc.

Kinder Morgan

The Kroger Company

MGM Resorts International

Nortek Inc.

Oracle Corporation

Progressive Waste Solutions Ltd


Shareholders of Groupe Balmain

Signet Group Limited

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

Special Committee of Independent Directors of Ku6 Media Company Ltd.

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 5 Globally

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

Year-End 2014 League Tables


M&A Lawyers Globally


in Deal Volume Globally 2015

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 60 $1 billion+ deals, including five of the top 10—and three of the top five—U.S. announced M&A deals in 2015

Advised on approximately $673 billion in announced transaction value and 13.4% market share – an increase of 62% over prior year

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

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

Team of the Year for M&A: Corporate and Commercial: Large Deals ($1bn+)

Legal 500 US 2015

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

Received “highly commended” ranking in Legal Expertise for advising Kinder Morgan in streamlining its corporate structure in three deals worth $76 billion.

FT North America Innovative Lawyers Report 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

Corporate Chairman Michael Aiello was named a “Dealmaker of the Year” in March 2015 by The American Lawyer and “Dealmaker of the Week” for week ending August 15, 2014 by The Am Law Daily for his lead role advising Kinder Morgan in its approximately $76 billion acquisition of all the outstanding equity securities of Kinder Morgan Energy Partners, Kinder Morgan Management and El Paso Pipeline Partners.

Frederick Green was named “Dealmaker of the Week” by The Am Law Daily in May 15, 2015 for his lead role advising Verizon Communications Inc. in its $4.4 billion acquisition of AOL Inc.

Corporate Chairman Michael Aiello was named “Dealmaker of the Week” for week ending May 1, 2015 by The Am Law Daily for his lead role advising Iron Mountain Inc. in its $2.6 billion acquisition of Recall Holdings Ltd.

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, Latest Thinking, Firm News & Announcements

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