Dennis J. Block

Shareholder; Senior Chairman, Global Corporate M&A Practice
New York,  NY  U.S.A.

Peer Rating
AV® Preeminent

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Experience & Credentials Ratings & Reviews

Practice Areas

  • Mergers & Acquisitions
  • Private Equity
  • Corporate & Securities
Contact InfoTelephone: 212.801.2222
Fax: 212.805.5555
University State University of New York at Buffalo, B.A., 1964
Law SchoolBrooklyn Law School, LL.B., 1967
Admitted1968, New York

Professional & Community Involvement

Dennis is an active leader in the legal community. Recent roles are highlighted below.
•The Fellows of the American Bar Foundation, 1988-Present
•American Bar Association, 1969-Present: Dennis has dedicated over 30 years to the American Bar Association serving as a leader and mentor.
•Section of Litigation
•Chairman, Task force on Ancillary Business Activities of Lawyers, 1983-1993
•Co-chairman, Committee on Corporate Counsel, 1982-1985
•Division Director, 1985-1986
•Committee on Securities Litigation, 1988-Present
•Council of Section of Litigation, 1986-1989
•Section of Business Law
•Chairman, Drafting Committee, Comment Letter on SEC Proposed Rule 24a-1, Litigation Subcommittee on Committee on Federal Regulation of Securities
•Drafting Committee, Comment Letter on SEC Proposed Rule 14d-8, Tender Offer and Proxy Statement, Subcommittee on Federal Regulation of Securities, 1990
•Committee on Federal Regulation of Securities, 1988-Present
•Subcommittee on SEC Practice and Enforcement Matters, 1988-Present
•Subcommittee on Proxy Solicitations and Tender Offers, 1988-Present
•Committee on Counsel Responsibility and Liability, 1988-Present
•Committee on Business and Corporate Litigation, 1991-Present
•Committee on Corporate Laws, 1993-1998
•Subcommittee on Ancillary Business Activities of the American Bar Association's Special Coordinating Committee on Professionalism, 1989-1991
•UJA-Federation of New York, Lawyers Division
•Past chairman, 1989-1991
•Major Gifts chairman, 1987-1989
•Board of Directors, Junior Achievers of New York (JANY), 2005-Present
•Board of Trustees of Supreme Court Historical Society, 2010-Present
•The American Law Institute, 1983-Present
•The Association of the Bar of the City of New York, 1984-Present
•American Society of Corporate Secretaries, 2000-Present
•Law Firm Advisory Committee of the Metropolitan Corporate Counsel, 1993-1998
•New York State Governor's Task Force on Commercial Courts, 1992-1993
•Advisory Committee to Annual Abraham L. Pomerantz Lecture Series, Brooklyn Law School
•Adjunct Professor, Brooklyn Law School, 1999-Present


Dennis J. Block is the Senior Chairman of the firm's Global Corporate M&A Practice. He has handled numerous mergers and acquisitions transactions - both hostile and friendly - on behalf of acquirers, targets, and investment banks.

The range of transactions handled by Dennis includes mergers, acquisitions, proxy contests, joint ventures, third-party tender offers, self-tender offers, and spin offs, and other forms of corporate restructurings and financings.

As a corporate counselor, Dennis has been retained to represent public companies, entrepreneurs, private equity and hedge funds, and investment and commercial banks in connection with issues of major public interest and debate. For example, he represented the Business Roundtable regarding corporate governance issues, Texaco regarding discrimination matters, Cendant directors regarding board liability, General Motors regarding Ross Perot, and Merrill Lynch regarding the Orange County bond default and in the Nasdaq litigation in which Dennis was the industry negotiator for the $1 billion settlement.

Dennis' practice includes the general representation, either on a continuous basis, or from time to time, of a number of large publicly-held corporations, including Pfizer Inc., Bear, Stearns & Co. (now part of JPMorgan Chase), Quaker Oats Company (now part of PepsiCo), Procter & Gamble, Merrill Lynch, CBS, US WEST (now part of Qwest Communications International), General Electric, General Motors, Telstra, Inc., MediaOne Group (now part of AT&T), Dayton Power and Light, J.C. Penney, Six Flags, Wakefern Food Corp. (ShopRite), Mack-Cali, True Religion and Trian Partners.

Dennis' practice involves the representation of Corporate Boards and Audit, Compensations, and Special Committees thereof in connection with numerous issues, including corporate governance. Dennis also represents public companies in connection with Securities and Exchange Commission (SEC) matters, including investigations.

Dennis has been Co-Chairman of the Committee on Corporate Counsel and a member of the Council of the Section of Litigation of the American Bar Association. From 1993-1998, Dennis served as a member of the Committee on Corporate Laws of the Section of Business Law of the American Bar Association. He has co-authored The Business Judgment Rule: Fiduciary Duties of Corporate Directors (5th ed. 1998 and Supp. 2000). He was also co-author of a monthly column in the New York Law Journal, co-editor of The Corporate Counsellor's Deskbook (5th ed. 1999), and a member of the editorial boards of several legal publications. In addition to writing, Dennis frequently lectures on mergers and acquisitions, the business judgment rule, corporate governance, federal securities laws, corporate litigation, the attorney-client privilege, professional responsibility, and indemnification and insurance of corporate officials. He has been consistently ranked in the first tier as one of the leading corporate/M&A lawyers in Chambers Global and included in Best Lawyers in America.

Dennis is a graduate of Brooklyn Law School where he teaches Advanced Corporate Law as an Adjunct Professor. Before entering private practice, Dennis was a Branch Chief for Enforcement in the New York Regional Office of the SEC.

Areas of Concentration

•Mergers and acquisitions
•Proxy contests
•Joint ventures
•Third-party/self-tender offers
•Other corporate restructurings
•Corporate governance and board representation
•SEC matters
•Risk management

Awards & Recognition

•Listed, The Best Lawyers in America, Corporate Governance Law; Corporate Law; Mergers and Acquisitions Law, 2006-2016
•Listed, Chambers USA Guide, 2003-2015
• Eminent Practitioner, 2014-2015
•Listed, Chambers Global, Corporate/M&A (USA), 2015
•Listed, The Legal 500 United States, Mergers, Acquisitions and Buyouts - M&A: Large Deals - Leading Lawyers, 2012-2015
•Listed, Super Lawyers magazine, New York Metro Super Lawyers, 2006-2015
•Listed, Top 100 Lawyers in New York, 2013
•Listed, Chambers Global, Corporate/M&A, 2000-2014
•Team Member, Corporate Board Member magazine and FTI Consulting Inc., one of America's Best Corporate Law Firms, 13th Annual Legal Industry Study, 2013
•Named, Client Service All Star, BTI Client Service All-Stars Report, 2012
•Listed, Euromoney's Guide to the World's Leading Mergers and Acquisitions Lawyers, 2011
•Listed, Lawdragon 500, Leading Lawyers in America, 2011
•Named, Dealmaker of the Year, The American Lawyer, 2000, 2003 and 2010
•Named, Most Influential Lawyers in America, The American Lawyer, 2006
•Rated, AV Preeminent 5.0 out of 5

AV, BV, AV Preeminent and BV Distinguished are registered certification marks of Reed Elsevier Properties Inc., used under in accordance with the Martindale-Hubbell certification procedures, standards and policies.

Associated News & Events

Press Releases

10.21.15 74 Greenberg Traurig New York Attorneys Recognized in 2015 Edition of New York Metro Super Lawyers
10.15.15 Greenberg Traurig Advised Orlen Upstream in the Acquisition of NASDAQ Listed FX Energy
08.19.15 30 Greenberg Traurig New York Attorneys Included in the 2016 Edition of Best Lawyers in America
06.08.15 100-Plus Greenberg Traurig Attorneys Recommended in The Legal 500 United States 2015 Guide to Outstanding Lawyers
05.22.15 Greenberg Traurig Attorneys, Practices Included in the 2015 Chambers USA Guide
03.24.15 Greenberg Traurig Attorneys, Practices Recognized by Prestigious Chambers Global Guide
10.09.14 Greenberg Traurig Represents Gentiva Health Services in $1.8 Billion Acquisition by Kindred Healthcare; Nationwide Integrated Care Delivery System Created
09.24.14 65 Greenberg Traurig New York Attorneys Recognized in 2014 Edition of New York Metro Super Lawyers
08.21.14 29 Greenberg Traurig New York Attorneys Included in 2015 Edition of Best Lawyers in America
07.15.14 Greenberg Traurig Ranked in 2014 Legal 500 United States Guide

Articles, Publications, & Lectures

Dennis is a frequent lecturer and author. Recent highlights are listed below.

Editorial Positions

•Business Law Currents Editorial Board, Thompson Reuters, 2011
•Board of Contributing Editors and Advisors, Securities Regulation Law Journal, 1979-present
•Board of Contributing Editors and Advisors, The Corporate Law Review
•Editorial Board, Inside Litigation, Prentice Hall Law & Business
•Editorial Board, Insights, Prentice Hall Law & Business, 1987-present
•Advisory Board of Securities Regulation & Law Report, Bureau of National Affairs, Inc.
•Editorial Board, Corporation
•Board of Editors of Advisors, Executive Counsel
•Editorial Board, Mergers and Acquisitions Law Reporter
•Editorial Board, The Corporate Governance Advisor
•Board of Editors, The M&A Lawyer


•Co-author, Implications of the Attorney-Client Privilege and Work Product Doctrine, Internal Corporate Investigations, American Bar Association, Section of Litigation, 1992; updated 2002; 2007
•Co-author, The Business Judgment Rule: Fiduciary Duties of Corporate Directors, Prentice Hall Law & Business November 1986; second edition October 1988; third edition, October 1989; fourth edition, October 1993; fifth edition, September 1998; 2000 supplement; 2001 supplement and 2002 supplement
•Co-author, A Practitioner's Guide to Acquisition of Companies in the US, City & Financial, 2002
•Co-editor, Corporate Counselors Deskbook, First Edition, 1983; Second Edition, 1985; Third Edition, 1990; Fourth Edition, 1992; Fifth Edition, 1999


•Author, An Analysis of the Corporate Governance and Executive Compensation Provisions in the Dodd-Frank Wall Street Reform and Consumer Protection Act, Association of General Counsel, October 15, 2010
•Author, SEC Schedule for Implementing Dodd-Frank Act, Association of General Counsel, October 15, 2010
•Author, Public Company M&A: Recent Developments in Corporate Control, Protective Mechanisms And Other Deal Protection Techniques, Practising Law Institute, November 27, 2006
•Author, Whistleblower Protection Under the Sarbanes-Oxley Act, New York Law Journal, June 26, 2003
•Author, Delaware Supreme Court Clarifies Application and Interplay Between Blasius, Unocal Heightened Standards of Review of Board Action, Vol. LXXIV, No. 12, June 16, 2003
•Author, SEC Adopts Professional Conduct Standards for Attorneys, New York Law Journal, April 24, 2003
•Author, Disclosure After Sarbanes-Oxley, New York Law Journal, August 22, 2002
•Author, Review of Tender Offers by Controlling Shareholders, New York Law Journal, June 27, 2002
•Co-author, SLUSA Preclusion Of Claims Against Brokers, New York Law Journal, April 25, 2002
•Author, Application of Delaware's 'Raincoat' Provision, New York Law Journal, February 28, 2002


•Speaker, “Understanding the Securities Laws,” The Practising Law Institute, New York, NY, 2009; 2010; 2011; 2012; 2013
•Speaker, “Dodd/Frank Bill,” Association of General Counsel Annual Meeting, Washington, D.C., October 15, 2010
•Speaker, Annual Corporate & Securities Law Update, The Association of the Bar of the City of New York, 2003; 2006; 2010
•Speaker, “Contests for Corporate Control 2010: Current Offensive & Defensive Strategies in M&A Transactions,” Practising Law Institute, New York, NY, February 4, 2010
•Chairman, “Contests for Corporate Control: Current Offensive & Defensive Strategies in M&A Transactions 2007,” Practising Law Institute, New York, NY, January 24, 2007
•Speaker, “Introduction to Transactional Practice, What Every Lawyer Needs to Know About Corporate Transactions,” The Association of the Bar of the City of New York, NY, November 2, 2006
•Speaker, “Securities Regulators 'Views from the Sources' - Federal Securities Enforcement Perspective,” The Association of the City of New York, New York, NY, June 5, 2006
•Speaker, “Investment Banker Conflicts,” Securities Industry Association, Florida, March 20, 2006
•Chairman, “Contests for Corporate Control 2010: Current Offensive & Defensive Strategies in M&A Transactions 2006,” Practising Law Institute, New York, NY, January 25, 2006
•Speaker, “Crisis Management,” Mealey's Insurance and Reinsurance Corporate Counsel Conference, Arizona, December 1, 2005
•Speaker, “Enron, Worldcom, Disney, Spitzer & The FDA: The Revolution in Duties & Liability Beyond Sarbanes-Oxley,” The Directors' Roundtable, New York, NY, April 22, 2005

Reported CasesSignificant Representations; DPL in its acquisition by AES Corp. Pfizer Inc. in its acquisition of King Pharmaceuticals, Inc. Pfizer Inc. in its acquisition of Wyeth; Pfizer Inc. in its sale of the Capsugel business to KKR; Bear Stearns Companies Inc. acquisition by JPMorgan Chase; Pfizer Inc. in the sale of its Consumer Business to Johnson & Johnson; Republic Bancorp Inc. in its merger with Citizens Banking Corporation; The Procter & Gamble Company in its acquisition of The Gillette Company; Pfizer Inc. in its acquisition of Vicuron; StorageTek in its acquisition by Sun Microsystems; Pfizer Inc. in its acquisition of Pharmacia Corporation; Quaker Oats in its acquisition by PepsiCo Inc. The Bear Stearns Companies Inc., financial advisor to General Motors, in connection with the sale of GM's subsidiary Hughes Electronics Corporation to EchoStar; Communications Corporation; Houghton Mifflin Co. and the special committee of its board in its acquisition by Vivendi Universal; Pfizer Inc. in its acquisition of Warner-Lambert; US WEST in its merger with Qwest; US West in its merger with Global Crossing; Investment bankers for RJR Nabisco in its acquisition by KKR; NCR and its merger with AT&T; MediaOne and its merger with AT&T; The General Electric in its attempted acquisition of Kemper Insurance; US WEST and its acquisition of Continental Cablevision and US WEST's joint venture with Time-Warner and its subsequent split-off of MediaOne Group; Westinghouse and its acquisition of CBS; Macy's in its takeover fight with Federated Department Stores; J.C. Penney in its acquisition of Eckerd Drugs; Bally's in its acquisition by Hilton Hotels and the subsequent split-off of Park Place Entertainment; Toys R Us and its acquisition of Baby Superstores; Dresser Industries in its merger with Halliburton; Arbor Drugs in its acquisition by CVS; NacRe in its acquisition by XL; Certain of the above representations were handled by Mr. Block prior to his joining Greenberg Traurig, LLP.

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Office Information

Dennis J. Block

200 Park Avenue
New YorkNY 10166


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