"A cool hand, seasoned and knowledgeable about all aspects of securities law."The Legal 500 2014

Jeff G. Hammel

New York
  • 885 Third Avenue
  • New York, NY 10022-4834
  • USA

Jeff Hammel is a partner in the New York office of Latham & Watkins. He is a member of the Litigation & Trial Department and Co-chair of Latham’s Securities Litigation & Professional Liability Practice.  He is recognized by Chambers USA 2014 as a leading securities litigator, and named "one of the nation’s leading securities litigation attorneys” by The Legal 500 US.

Mr. Hammel regularly represents major financial institutions, accounting firms and Fortune 500 companies, boards of directors, board committees and individuals.  He has defended more than three dozen shareholder class actions, derivative litigation and regulatory enforcement proceedings.  Additionally, he has significant experience conducting internal investigations regarding their financial reporting, disclosures and internal control procedures.

He is co-author of the treatise Federal Securities Litigation: Commentary and Forms, A Deskbook for the Practitioner (2d edition). 

He served as a law clerk to Judge David N. Edelstein of the US District Court for the Southern District of New York.

Mr. Hammel is admitted to numerous federal district and appellate courts and is a member of the American Bar Association’s Securities Litigation Committee and Subcommittee on Broker-Dealer Litigation.


Recent securities cases in which Mr. Hammel played a lead role include:

  • Dempsey v. Vieau, 2015 U.S. Dist. LEXIS 119245 (S.D.N.Y. Sept. 8, 2015) - Won dismissal of securities fraud claims against executives of a technology company based on alleged failure to disclose product defects and customer sales issues
  • Dudley v. Haub, 2013 U.S. Dist. LEXIS 61386 (D.N.J. 2013) - Won dismissal of securities fraud claims against private equity firm and its chairman relating to bankruptcy of A&P supermarket chain
  • In re A123 Systems, Inc. Securities Litigation,  2013 WL987830 (D. Mass. 2013) - Won dismissal of securities fraud claims against manufacturer of electric vehicle batteries following disclosure of high profile product defect and costly product replacement campaign
  • In re Herald, Primeo & Thema Funds Securities Litigation, 2011 WL 5928952 (S.D.N.Y. 2011) - Won dismissal of all claims in Madoff-related litigation on grounds of forum non conveniens
  • In re Omnicom Group Inc. Securities Litigation, 597 F.3d 501 (2d Cir. 2010) - Won summary judgment on securities fraud claims, which was affirmed by the Second Circuit, establishing important “loss causation” precedent regarding the events affecting stock price that can support a claim for securities fraud
  • In re Fannie Mae 2008 Securities Litigation, 742 F. Supp. 2d 382 (S.D.N.Y. 2010) - Won dismissal of virtually all securities fraud claims against Fannie Mae following its placement into federal conservatorship during the financial crisis
  • In re Fannie Mae 2008 Securities Litigation, 2009 WL 4067259 (S.D.N.Y. 2009) - Won dismissal of Section 12(a)(2) and 15 claims against Fannie Mae, as well as against more than a dozen underwriters
  • In re Omnicom Group Inc. Shareholder Derivative Litigation, A.D.3d 766 (N.Y. 1st Dep’t 2007) - Won unanimous appeal based on plaintiffs’ failure to plead “demand futility,” setting important New York precedent
  • In re Marsh & McLennan Companies, Inc. Securities Litigation, 501 F. Supp. 2d 452 (S.D.N.Y. 2006) - Won dismissal of securities fraud and Sections 11, 18 and state law claims against Deloitte, establishing important precedent on auditor liability issues
  • Stonecipher v. Lehman ABS Corp.,  2006 WL 1458507 (S.D.N.Y. 2006) - Won dismissal of Sections 11, 12(a)(2) and 15 claims against underwriters based on asset-backed securities
  • Alaska Electrical Pension Fund v. Adecco S.A., 2007 WL 4142984 (9th Cir. 2007) - Won dismissal of securities fraud claims based on allegedly understated reserves