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Dennis J. Block

New, NY

Trusted business attorney serving New York.

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Dennis J. Block is an attorney based in New York, NEW YORK. The practice focuses on Business and M&A.

Based in
New York, NEW YORK
Experience
attorney
Known for
Business · M&A
  • Handles Business and M&A matters from New York, NEW YORK.
  • Recognized with Best Lawyers in America — Corporate Law (2026).

About Dennis J. Block: Dennis J. Block is an attorney based in New York, NEW YORK. The practice focuses on Business and M&A.

Areas of practice

Practice focus

Dennis J. Block represents clients in New York across the following areas of law. Each area links to other verified attorneys with the same focus.

Biography

About Dennis J. Block

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.

Credentials

Education

  • Brooklyn Law School

    J.D. · 1967

Recognition

Awards & honors

  • Best Lawyers in America — Corporate Law

    2026

  • Best Lawyers in America — Mergers and Acquisitions Law

    2026

  • Best Lawyers in America — Additional Areas of Practice:

    2026

  • Best Lawyers in America — Corporate Governance Law

    2026

  • Best Lawyers in America — Special Focus:

    2026

  • Best Lawyers in America — Private Equity

    2026

  • Best Lawyers in America — Securities

    2026

  • Best Lawyers in America — Transactions

    2026

Locations

Office locations

Main office

New York, New York 10017

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Frequently asked

Common questions

  • What areas of law does Dennis J. Block practice?

    Dennis J. Block focuses on Business and M&A.

  • Where is Dennis J. Block located?

    Dennis J. Block primarily serves clients in New York.

  • Is Dennis J. Block a verified attorney?

    Dennis J. Block's profile is listed but has not yet been claimed by the attorney. Verification status is pending.

  • How can I schedule a consultation with Dennis J. Block?

    You can book a consultation through LawyersListed directly from this page. Initial outreach can also be made by phone at 212-801-9200.