Abena Mainoo’s practice focuses on high-stakes internal and government investigations and related litigation.

Abena conducts internal investigations, on behalf of clients, of potential violations of laws (including antifraud, consumer protection, and environmental laws) and internal policies. She also defends companies and their senior management in government investigations and related lawsuits.

Abena joined the firm in 2009 and became a partner in 2018.

Notable Experiences

  • Company in investigation by the New York Attorney General into pricing.

  • Financial institution in investigation by the New York Attorney General into residential mortgage-backed securities.

  • Global financial institution in internal investigation and investigations by the DOJ, SEC, and IRS into alleged tax fraud.

  • Citigroup in investigations of FX rates by the DOJ and bank regulators, global investigations of benchmark rates, and related compliance reviews.

  • Financial institution in investigations by the DOJ and OFAC of potential violations of U.S. sanctions.

  • Financial institution in internal investigation into alleged regulatory violations and retaliation.

  • BNP Paribas and HSBC in winning dismissal of civil RICO and related state law claims in follow-on litigation in the U.S. District Court for the Southern District of New York and on appeal in the U.S. Court of Appeals for the Second Circuit.

  • Bosch in investigations and follow-on putative class actions and individual actions relating to diesel emissions.

  • Allergan and certain executives in follow-on securities class action concerning silicone-gel breast implants.

  • Nationstar Mortgage Holdings Inc. and certain of its current and former officers and directors in winning dismissal of follow-on putative securities class action in the U.S. District Court for the Southern District of Florida.

  • Petrobras, PGF, and individual officers and directors in follow-on securities class action and multiple individual actions in the U.S. District Court for the Southern District of New York.

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Selected Activities

  • Secretary, Federal Bar Council
  • Member, Merit Selection Panel for Magistrate Judges for the U.S. District Court for the Southern District of New York

Publications

Events