425 Lexington Avenue
New York, NY 10017

+1 212 455 2266

40 & Under Hot List


New York

Joshua Polster represents clients in high-stakes complex commercial litigation, including insurance, securities, M&A and breach of contract claims. He also regularly counsels clients on matters related to M&A and real estate litigation.

Representative experience includes: 

  • Beazley in connection with claims related to alleged biometric privacy violations and claims related to a ransomware attack and other data breaches
  • Brighthouse Life Insurance Company in putative class actions related to universal life insurance policies
  • Genesee & Wyoming in winning arbitrations over commercial contracts valued at hundreds of millions of dollars related to the company’s railroad transportation business
  • UBS in obtaining a denial of class certification in a putative class action alleging breach of contract and fiduciary duty in connection with certain closed-end mutual funds 
  • The Toronto-Dominion Bank in obtaining a denial of class certification in a putative class action related to the Allen Stanford Ponzi schemes
  • JPMorgan Chase in obtaining dismissal of fraud claims relating to the Tom Petters Ponzi scheme
  • Private family siblings and family businesses in wins at trial before the Delaware Court of Chancery and Connecticut Superior Court
  • Genesee & Wyoming and People’s United in M&A litigations
  • Former Lehman Brothers officers in an appellate win in a fraud and breach of fiduciary duty lawsuit

Josh also maintains an active pro bono practice. He has defeated an emergency motion in a Florida voting action and, along with the ACLU and AIC, secured a preliminary injunction blocking a fast-track deportation rule.

Josh received his A.B., magna cum laude, from Princeton University in 2005. He received his M.S. from Pace University in 2007 and graduated from the New York University School of Law, magna cum laude, in 2011. Prior to joining Simpson Thacher, Josh served as a law clerk for the Honorable Dennis Jacobs, Chief Judge of the Second Circuit Court of Appeals.


Updated July 2021