Jonathan Rosenberg > O'Melveny & Myers LLP > New York, United States > Lawyer Profile

O'Melveny & Myers LLP
NEW YORK, NY 10036
United States

Work Department

Securities Litigation


Practice Group Leader; Partner


  • Northwestern University, J.D., 1984: cum laude; Order of the Coif; Managing Editor, Northwestern University Law Review
  • Columbia University, M.A., 1981
  • Queens College, B.A., 1980: magna cum laude; Phi Beta Kappa

Lawyer Rankings

United States > Dispute resolution > Securities litigation: defense

(Leading lawyers)

Jonathan RosenbergO’Melveny & Myers LLP

The ‘very well prepared and very smart’ practice at O’Melveny & Myers LLP has a particularly strong track record in defending the major financial institutions in securities litigation matters, among them Goldman Sachs, Morgan Stanley and Wells Fargo Bank. Jonathan Rosenberg in New York and Matthew Close in Newport Beach lead the practice. Both play key roles in representing underwriter syndicates in federal and state courts in matter concerning IPOs and secondary offerings. A prime example is their work for a Goldman Sachs-led underwriting syndicate in actions arising from the the IPO of Dropbox, Inc. Seth Aronson in Los Angeles recently secured the dismissal of a securities fraud action for ArcSoft, Inc. Amy Park in Silicon Valley, who joined from Skadden, Arps, Slate, Meagher & Flom LLP in 2021, is a boost to the firm’s West Coast practice.