Ethan Weinberg first joined the litigation department as an associate in 2015. He returned to Ropes & Gray in 2018 after serving as a law clerk to the Honorable Valerie Caproni of the U.S. District Court for the Southern District of New York. Ethan’s practice focuses on complex litigation, representing public and private companies, financial institutions, and other sophisticated clients in a range of disputes in federal and state courts, as well as in government and regulatory investigations. He also maintains an active pro bono practice, with a focus on LGBTQ issues.

During law school, Ethan was a member of Columbia Law School’s Sexuality and Gender Law Clinic as both a student clinician and teaching assistant. He also served as an articles editor for the Human Rights Law Review (HRLR).


  • Representing private equity manager and officers in SEC inquiry into potential illegal insider trading around sale of a public company
  • Representing global investment bank in response to third-party subpoenas in federal litigations regarding corporate transactions
  • Seconded to Morgan Stanley’s Wealth Management Litigation group, and represented the firm and its financial advisors in FINRA arbitrations—including favorable outcomes in three arbitrations that went to hearing—federal and state litigations, and FINRA, SEC, and DOJ investigations
  • Conducted an internal investigation for a Chilean salmon farming company following accusations that it had reported false data and caused environmental damage
  • Represented an investment adviser in connection with an SEC inquiry into the valuation of mortgage-backed securities
  • Represented investment bank in SEC investigation regarding a fairness opinion issued in relation to a merger of real estate investment companies
  • Represented real estate development firm in contract disputes in federal courts in Ohio and New York
  • Represented private high schools in responding to allegations of historical misconduct
  • Represented financial services firm in CFTC investigation into commodity trading practices
  • Representing LGBT couple from South America seeking asylum
  • In coordination with Lambda Legal, represented non-profit organizations and secured preliminary injunction of President Trump’s Executive Order 13950 regarding diversity trainings
  • Assisted pro bono LGBTQ individuals seeking legal name changes

Areas of Practice