Paul Weiss

1285 Avenue of the Americas
New York, NY 10019-6064
212-373-3321 (direct)
212-492-0321 (direct fax)
212-373-3000 (firm)
212-757-3990 (firm fax)

A partner in the Litigation Department, Claudia Hammerman has extensive experience in handling a broad range of litigation and regulatory matters with particular emphasis defending financial institutions and corporations in complex securities and commercial matters as well as representing financial institutions and other clients before the SEC, the Department of Justice and federal and state regulatory authorities.


Claudia has served as litigation counsel on significant securities and commercial disputes for CitigroupJPMorganWachoviaBank of New York Mellon and Bank of America. Among her recent significant matters, Claudia:

  • Currently is representing Citigroup in the Lehman Brothers bankruptcy proceedings.
  • Currently is representing Citigroup in connection with CDO and other subprime-related matters.
  • Currently is representing Bank of America in connection with certain regulatory investigations.
  • Currently is representing Bank of New York Mellon in connection with litigation relating to its FX standing instruction service for custody clients.
  • Represented Citigroup in all Enron-related regulatory proceedings and litigation (including securities class actions, opt-out actions, derivative actions and bankruptcy proceedings).
  • Represented JPMorgan in litigations and regulatory matters arising out of its dealings with Delphi Corporation.
  • Represented Citigroup in the litigations and regulatory proceedings arising out of its dealings with Dynegy.
  • Represented Wachovia in securities class actions and other litigations arising out of auction rate securities.

Claudia has been selected by her peers for The Best Lawyers in AmericaSuperLawyers and Benchmark Litigation in the area of securities litigation.

Claudia has taught several courses in Constitutional Law at Smith College and at Haverford College, and served on the Harvard Law Review. In 1991-92, she clerked for Judge Jon O. Newman, former chief judge of the Second Circuit Court of Appeals.



  • J.D., Harvard Law School, 1991
    magna cum laude
  • B.A., Haverford College, 1987
    phi beta kappa, magna cum laude


  • Hon. Jon O. Newman, U.S. Court of Appeals, 2nd Circuit

Bar Admissions

  • New York

See Library Tab for articles, publications and presentations by Claudia Hammerman

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