Abena Mainoo’s practice focuses on investigations and complex civil litigation.

Abena defends companies and their senior management in high-stakes government investigations and lawsuits involving alleged violations of laws including consumer protection laws, securities laws, and RICO. She has also conducted internal investigations, on behalf of clients, of potential violations of laws (including economic sanctions, environmental, and antifraud laws) and internal policies. In addition, Abena has advised clients on enhancing compliance programs.

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 an investigation 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 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.

  • Bulgarian company in obtaining dismissal of civil RICO case in the U.S. District Court for the Southern District of New York.

  • Bosch in putative class actions and individual actions in federal and state courts, and in investigations, in connection with diesel emissions.

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

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

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

  • Latin American airline in defending against a class action in the U.S. District Court for the Eastern District of New York concerning flight refunds.

  • LATAM Airlines and its affiliates in a heavily litigated contested matter, including discovery and a multi-day evidentiary hearing, in the voluntary reorganization and restructuring of their debt under Chapter 11.

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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