Michael B. Tumas concentrates his practice in the area of corporate law with specific emphasis on mergers and acquisitions, issues of internal governance, and commercial transactions involving Delaware corporations and other business entities. Chambers USA has noted his “strong track record of handling high-value M&A and other commercial transactions involving Delaware corporations" as well as his reputation as a "very detail-oriented attorney who really digs into the issues and is very reasonable to deal with." Michael’s practice often involves counseling boards of directors and special committees of boards of directors regarding their duties, fiduciary and otherwise. In addition, he advises clients with respect to responding to unsolicited acquisition proposals, stockholder activist approaches and other preparedness matters, board governance and other corporate law matters. Michael also has extensive experience in representing both sellers and buyers in negotiated acquisitions of divisions, assets and businesses.
A longtime participant in firm committees and management, Michael is a former chair of the firm’s Executive Committee as well as a former practice leader of the Corporate Group.
Representative Matters
- Delaware counsel to Alphabet's Google on its acquisition of Mandiant
- Delaware counsel to Intercontinental Exchange in connection with the merger of Bakkt and a SPAC sponsored by Victory Park Capital
- Delaware counsel to Liberty Media in connection with Liberty Media Acquisition Corporation's SPAC IPO
- Delaware counsel to Intercontinental Exchange on its agreement to acquire Ellie Mae
- Delaware counsel to Liberty Broadband on its merger with GCI Liberty
- Delaware counsel to Liberty Expedia in connection with its acquisition by Expedia Group, Inc.
- Counsel to Board of Directors of Gardner Denver Holdings, Inc. in its merger with Ingersoll-Rand plc’s industrial segment
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Delaware counsel to Pinterest in connection with the company’s IPO, including the adoption of a dual-class capital structure
- Special Committee of Medley Management Inc. in connection with the acquisition of Medley Management Inc. by Sierra Income Corporation
- Williams in its merger with Williams Partners
- CommerceHub in connection with its go-private deal by GTCR and Sycamore Partners
- Regal Entertainment Group in connection with its acquisition by Cineworld Group PLC
- UnitedHealth in its acquisition of The Advisory Board Company's health care business
- Liberty Interactive in its acquisition of HSN
- Liberty Interactive in its acquisition of General Communication
- E. I. du Pont de Nemours and Company in its asset swap with FMC
- VCA in connection with its acquisition by Mars
- UnitedHealth in connection with its acquisition of Surgical Care Affiliates
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Board of Directors of NRG Energy in connection with its cooperation agreement with activist investors
- Liberty Media in connection with its acquisition of Formula 1
- Starz in connection with its acquisition by Lions Gate
- Zayo in connection with its acquisition of Electric Lighthouse
- Intercontinental Exchange in connection with its acquisition of Interactive Data Corporation
- Liberty Interactive in connection with its acquisition of zulily
- Google in connection with its corporate reorganization to form its new holding company, Alphabet
- Liberty Broadband in connection with the proposed acquisition of Time Warner Cable by Charter Communications
- Williams Companies in its merger of Williams Partners LP and Access Midstream Partners LP
- Conflicts Committee of OCI Resources LP in connection with OCI Enterprises Inc. disposition of general and limited partner interests
- E. I. du Pont de Nemours and Company in connection with its acquisition of Pannar, a South Africa based seed company with operations throughout Africa
- Special Committee of Rue 21 in connection with the acquisition of Rue 21 by APAX
- Intercontinental Exchange in connection with its acquisition of NYSE Euronext
- Board of Directors of NRG Energy in connection with its merger with GenOn Energy
- E. I. du Pont de Nemours and Company in its acquisition of Innovalight, Inc.
News
- August 17, 2023
- July 18, 2023
- June 1, 2023
- November 17, 2022
- September 7, 2022
- August 18, 2022
- June 1, 2022
- May 9, 2022
- May 5, 2022
- March 8, 2022
- September 30, 2021
- August 19, 2021
- August 1, 2021
- July 13, 2021
- May 20, 2021
- May 12, 2021
- January 11, 2021
- November 20, 2020
- August 20, 2020
- August 7, 2020
- August 6, 2020
- April 23, 2020
- September 23, 2019
- August 15, 2019
- July 29, 2019
- June 6, 2019
- April 25, 2019
- April 16, 2019
- April 8, 2019
- August 15, 2018
- August 10, 2018
- May 18, 2018
- March 6, 2018
- December 5, 2017
- August 29, 2017
- July 6, 2017
- April 4, 2017
- April 3, 2017
- February 13, 2017
- January 9, 2017
- January 9, 2017
- November 17, 2015
- October 26, 2015
- August 18, 2015
- August 14, 2015
- May 28, 2015
- April 30, 2015
- April 23, 2015
- January 5, 2015
Events & Speaking Engagements
Education
University of Pennsylvania Law School, J.D.
The State University of New York at Binghamton, B.A.
Bar & Court Admissions
- Delaware
Practices
Professional Activities and Honors
Recognized by several publications, including:
- Chambers USA: America's Leading Lawyers for Business
- IFLR1000 United States - Guide to USA’s Leading Financial & Corporate Law Firms
- Lawdragon's 500 Leading Dealmakers
- The Best Lawyers in America®
- Delaware Super Lawyers
Received an AV® rating in Martindale-Hubbell's peer review certification
Delaware State Bar Association
American Bar Association, Business Law Section
Society of Corporate Secretaries & Governance Professionals