Michael Deyong | White & Case LLP International Law Firm, Global Law Practice
 Michael Deyong
 Michael Deyong

Michael Deyong

Partner, New York

T +1 212 819 2577

E [email protected]


Michael Deyong is a partner in the Mergers & Acquisitions group, and is resident in the New York office. Michael has extensive experience representing clients in domestic and cross-border mergers, acquisitions, sales, spin-offs, going private and private equity transactions. His practice extends across a wide variety of sectors with a particular emphasis on the healthcare and telecommunications industries.

Michael also has broad experience  advising on general corporate law matters and US securities law compliance in connection with mergers, cross-border tender offers and insider filings.

Michael was recently selected by The M&A Advisor as a winner of its "40 Under 40 Emerging Leaders Awards" in Mergers & Acquisitions, and distinguished as a "Rising Star" by Thomson Reuters in its "Super Lawyers – New York Metro" directory.

Bars and Courts

  • New York State Bar


  • JD, Georgetown University Law Center
  • BA, University of Central Florida


  • English


Sempra Energy, 2017

Representation of Sempra Energy, an electric and gas utility company, in its US$18.8 billion acquisition of Energy Future Holdings Corp., which indirectly owns 80% of Oncor Electric Delivery Company, LLC, an operator of the largest electric transmission and distribution system in Texas.

Anthem, Inc., multiple transactions

Representation of Anthem, Inc., one of the nation's largest health benefits companies, in numerous transactions, including (i) its acquisition of America's 1st Choice, (ii) its acquisition of HealthSun Health Plans, (iii) its recently terminated US$54.2 billion agreement to acquire Cigna Corporation (NYSE: CI), a combination that garnered front-page coverage for over 2 years, (iv) its acquisition of Simply Healthcare Holdings, Inc., (v) its sale of 1-800 CONTACTS, Inc. and Glasses.com, (vi) its US$4.9 billion acquisition of Amerigroup Corporation, (vii) its acquisition of CareMore Health Group, (viii) its US$4.7 billion sale of its pharmacy benefit management business to Express Scripts, Inc. (NASDAQ: ESRX) and (ix) its US$6.5 billion acquisition of WellChoice, Inc. (NYSE: WC), the parent company of Empire Blue Cross Blue Shield.

City Practice Group USA Holdings, 2017

Representation of City Practice Group USA Holdings in its US$600 million sale to Warburg Pincus. City Practice Group operates 68 CityMD urgent care centers in the US with more than one million patient visits per year.

GlobalWafers Co. Ltd., 2016

Representation of GlobalWafers Co. Ltd., a Taiwanese company publicly traded on the Taipei exchange and a global leader in the manufacture and sale of silicon wafers to the semiconductor industry, in its US$683 million acquisition of SunEdison Semiconductor Ltd. (NASDAQ: SEMI) pursuant to a Singapore Scheme of Arrangement.

Fortis Inc., 2016

Representation of Fortis Inc. (NYSE, TSX: FTS), Canada's largest publicly-owned utility, in its US$11.3 billion acquisition of ITC Holdings Corp. (NYSE: ITC), the largest independent electric transmission company in the US.

The Unsecured Noteholders of Texas Competitive Electric Holdings Company, 2015 and 2016

Representation of the Unsecured Noteholders of Texas Competitive Electric Holdings Company, an Energy Future Holdings Corp. subsidiary,  in a complex merger agreement as part of the largest US restructuring in 2015 and the proposed US$12.5 billion acquisition of Oncor Electric Delivery Company.

DISH Network Corporation, 2013

Representation of DISH in its US$25.5 billion unsolicited proposal to acquire Sprint Nextel Corporation.

EchoStar Corporation, 2014

Representation of EchoStar Corporation, a premier global provider of satellite and video delivery solutions, in the transfer of EchoStar's technologies business to DISH Network Corporation in exchange for two issues of preferred tracking stock issues in a prior transaction.

Global Infrastructure Partners, 2015

Representation of Global Infrastructure Partners in its strategic joint venture with Hess Corporation through the acquisition of a 50% interest in the owner of Hess's midstream crude oil and natural gas infrastructure assets located primarily in the Bakken Shale for cash consideration of US$2.675 billion.

Regal Beloit Corporation, 2014

Representation of Regal Beloit Corporation (NYSE: RBC), a leading global manufacturer of electric motors, mechanical and electrical motion control and power generation products, in its US$1.44 billion acquisition of the Power Transmission Solutions business of Emerson Electric Co. (NYSE: EMR).


  • Hostile Takeover Bids And The Power Of 'Just Saying No', Law360, July 17, 2014, (co-author)
  • Reversing Chinese Reverse Mergers, Law360, November 7, 2011, (co-author)

Awards & Recognition

Recipient of a "40 Under 40 Emerging Leaders Award" in Mergers & Acquisitions, The M&A Advisor (2015)

Listed as a "Rising Star", Super Lawyers – New York Metro (2014-2016)