Martin L. Seidel

Phone212 504 5643

Peer Rating
AV® Preeminent

Client Rating

Featured AV Peer Review Rated Lawyer IconFeatured AV Peer Review Rated Lawyer Icon
Printer Friendly VersionEmail this PageDownload to My Outlook ContactsAdd lawyer to My FavoritesCompare this lawyer to other lawyers in your favorites

Experience & Credentials Ratings & Reviews

Practice Areas

  • Antitrust
  • Antitrust Litigation & Civil Investigations
  • Commercial Litigation
  • Corporate & Securities Litigation
  • Securities Enforcement & Investigations
  • Corporate Governance
  • International Litigation
  • Investment Management Litigation
  • Litigation
University University of Wisconsin-Madison, B.A., magna cum laude, 1987
Law SchoolColumbia Law School, J.D., 1990 Managing Editor of the Columbia Journal of Transnational Law, Harlan Fiske Stone Scholar
Admitted1991, New York; Michigan; U.S. Court of Appeals, 2nd Circuit; U.S. Court of Appeals, 3rd Circuit; U.S. Court of Appeals, 11th Circuit; U.S. District Court, Eastern District of Michigan; U.S. District Court, Eastern District of New York; U.S. District Court, Southern District of New York

Martin Seidel focuses on complex commercial litigation and arbitration, with an emphasis on multiparty class and derivative suits and corporate control contests.

He is experienced in all aspects of shareholder and commercial litigation, internal corporate investigations, governmental investigations, and regulatory proceedings. He has represented underwriters, investment advisers, issuers, and corporate directors and officers in state and federal courts throughout the United States, arbitral tribunals in the U.S. and Europe, and before the U.S. Securities and Exchange Commission, FINRA, the U.S. Department of Justice, the U.S. Federal Trade Commission, as well as in investigations by state and federal prosecutors and state Attorneys General throughout the U.S. Martin has represented key players in the highest profile corporate governance and securities litigations and investigations of the past decade, including the Bear Stearns Hedge Fund Litigations, Refco/SphinX Funds, Fletcher Asset Management, Adelphia, Enron, Interstate Bakeries, Hollinger, and HealthSouth.

Martin received his B.A., magna cum laude, from the University of Wisconsin and his J.D. from Columbia Law School, where he was managing editor of the Columbia Journal of Transnational Lawand a Harlan Fiske Stone Scholar. He has been recognized as a leading securities litigator and a future star by New York Super Lawyers, the Legal 500 U.S. Volume III Litigation and Benchmark Litigation. Martin has published articles and spoken on corporate governance, securities litigation, directors and officers insurance and complex litigation. He is a member of the American Bar Association and the Committee on Securities Litigation of the New York State Bar Association.


•Salix Pharmaceuticals, Ltd. in its $15.6 billion acquisition by Valeant Pharmaceuticals International, Inc.
•Walkers Fund Services and two independent directors of the Bear Stearns High Grade Structured Credit Strategies Fund in class action and derivative litigation arising out of the collapse of two multibillion dollar hedge funds
•Successfully defended Richard N. Perle in connection with litigations and investigations in the United States and Canada arising out of allegations that Conrad Black and others looted over $450 million from Hollinger International, Inc., the publisher of the Chicago Sun-Times and London Sunday and Weekly Telegraph. All investigations were dropped without any action against Mr. Perle and all civil claims were dismissed
•Successfully defended Pfizer, Inc. in a securities fraud class action alleging that Pfizer concealed the failure of an experimental cardiovascular medicine as part of a scheme to prop up its stock price. All claims dismissed on motion to dismiss
•Pfizer in connection with consolidated securities and ERISA class actions arising out of Pfizer's alleged failure to disclose certain cardiovascular risks associated with Celebrex and Dextra
•The Board of Directors of Pfizer in connection with shareholder derivative litigation alleging that Pfizer's Board breached its fiduciary duty by failing to prevent off-label marketing of certain blockbuster drugs which had resulted in Pfizer paying a $2.3 billion civil and criminal penalty
•Martha Stewart in lawsuits brought by SEC and shareholders in Martha Stewart Living Omnimedia in connection with alleged insider trading of stock of ImClone Systems, Inc.
•Five outside directors of HealthSouth, Inc. in connection with securities fraud, breach of fiduciary duty, ERISA, and tax claims arising out of accounting fraud allegedly perpetrated by former CEO, Richard Scrushy and others
•Merrill Lynch & Co. in securities class actions and other lawsuits arising out of Merrill Lynch's role as managing general partner in two multibillion dollar private equity funds sponsored by the Thomas H. Lee Company
•Deutsche Bank Securities, Inc. in litigation arising out of allegedly illegal naked short selling activities
•MasterCard International in connection with investigations and lawsuit brought by the Antitrust Division of the U.S. Department of Justice alleging that MasterCard and Visa conspired to restrain trade in the U.S. credit card market
•Major prime broker and portfolio manager in SEC and New York State Attorney General investigations arising out of allegedly illegal market timing and late trading of mutual funds
•Conseco, Inc. in litigation and arbitration against Donald Trump over ownership of the General Motors Building
•Coca Cola in litigation and arbitrations brought by PepsiCo arising out of Coca Cola's acquisition of former Pepsi bottling operations in South America
•Two independent directors of Sensormatic in class action securities fraud litigation


News Releases
Cadwalader Represents Salix Pharmaceuticals in Its Acquisition by Valeant Pharmaceuticals Apr 01, 2015

Cadwalader Recognized by The American Lawyer With Two 2014 Global Legal Awards Jul 11, 2014


Clients & Friends Memos
M&A Update: Delaware Supreme Court Issues Important Ruling Protecting Independent Directors May 18, 2015

Halliburton v. Erica P. John Fund: Supreme Court Retains Basic, But Permits Defendants to Rebut Price Impact at Class Certification Jul 11, 2014

GAIM Regulation & Fund Governance Dec 04, 2014


Documents by this lawyer on

Subscribe to this feed

M&A Update: Delaware Supreme Court Issues Important Ruling Protecting Independent Directors
William P. Mills,Brittany Schulman,Martin L. Seidel, May 25, 2015
On May 14, 2015, the Delaware Supreme Court ruled that claims against independent directors must be dismissed when a company charter provision shields directors from monetary liability for breach of the duty of care and the plaintiffs are unable to plead facts establishing that the directors...

Revlon: Motive, Market Checks and Injunctions
Joshua Apfelroth,Gregory A. Markel,William P. Mills,Brittany Schulman,Martin L. Seidel, January 8, 2015
In two separate December 19th decisions, the Delaware Supreme Court and the Delaware Chancery Court declined to enjoin stockholder votes with respect to pending mergers for alleged violations of the target board’s Revlon duties. The decisions affirmed longstanding Delaware caselaw providing...

New York State Court Extends Common Interest Privilege to Merger Talks
Gregory A. Markel,William P. Mills,Brittany Schulman,Martin L. Seidel, December 17, 2014
In a December 4, 2014 decision, the New York Appellate Court, First Department, held that documents and discussions related to negotiation of a merger could be protected by the common interest privilege. The ruling represents a change in New York law which, unlike Delaware, previously limited the...

View Ratings & Reviews
Profile Visibility
#7,851 in weekly profile views out of 100,596 lawyers in New York, New York
#104,423 in weekly profile views out of 1,708,981 total lawyers Overall

Office Information

Martin L. Seidel

New YorkNY 10281-0006


Professional Networking for Legal Professionals Only

Quickly and easily expand your professional
network - join the premier global network for legal professionals only. It's powered by the
Martindale-Hubbell database - over 1,000,000 lawyers strong.
Join Now