Haima Marlier is a partner in Morrison Foerster’s Investigations + White Collar Defense Group and co-chairs both its Fintech and Securities Enforcement practices. Drawing on her experience as a former Securities and Exchange Commission (SEC) senior trial counsel, Haima represents public and private companies, financial services providers, and executives, directors, and other individuals in SEC, Commodity Futures Trading Commission (CFTC), Financial Industry Regulatory Authority (FINRA), state securities regulator, and internal investigations, as well as in related litigation. She has more than 20 years of experience litigating in federal, state, and administrative courts, leading complex negotiations, and representing her clients in mediation. She also counsels clients regarding securities enforcement developments, trends, and risk mitigation.
Before joining the firm, Haima spent nearly a decade in the SEC’s Division of Enforcement. While at the SEC, Haima served as lead counsel on a number of prominent enforcement litigations and investigations involving public companies, registered investment advisers, broker-dealers, banks, and individuals in matters arising under the federal securities laws. She has also worked closely with foreign securities regulators, numerous U.S. attorneys’ offices, and FINRA.
Haima is a member of Law360’s Securities Editorial Board, serves on the advisory board of Securities Docket, and is on the Board of Trustees of the SEC Historical Society. She mentors Penn State students of color who aspire to become lawyers and is a member of the board of directors of, and a volunteer running coach for, Girls on the Run New Jersey, a nonprofit dedicated to inspiring girls to recognize their inner physical and emotional strengths. She maintains an active pro bono practice.
Haima has been recognized by Chambers USA for Securities Regulation: Enforcement and Crypto-Asset Disputes; Crain’s New York Business’s Notable Women in Law and Notable Diverse Leaders in Law; The Legal 500 US as a recommended lawyer in Securities Litigation: Defense, Investigations and White Collar Criminal Defense, and Fintech; Securities Docket’s Enforcement Elite; and the New York Law Journal for her efforts in the diversity and inclusion space.
Haima received her J.D. from Boston College Law School and her B.A. from The Pennsylvania State University.
"Up and Coming" in Crypto-Asset Disputes (USA - Nationwide)
Chambers FinTech 2026
Ranked in Securities: Regulation: Enforcement (USA – Nationwide)
Chambers USA 2025
Recognized as Global Leader in Crisis Management
Lawdragon 2026
Named to the Securities Editorial Board
Law360 2025
Named in “Enforcement Elite”
Securities Docket 2025
Recommended in Finance: Fintech
The Legal 500 US 2023-2024
Recommended in Dispute Resolution: Securities Litigation: Defense
The Legal 500 US 2023-2025
Recognized in “Notable Women in Law”
Crain’s New York Business 2023
Recognized in “Notable Diverse Leaders in Law”
Crain’s New York Business 2022
Recommended for Dispute Resolution: Corporate Investigations and White-Collar Criminal Defense
The Legal 500 US 2022
SEC Division of Enforcement’s Director’s Award Recipient
U.S. Securities and Exchange Commission