Michael Troncoso is a partner with Robbins Geller Rudman & Dowd. His practice focuses on securities fraud class action litigation and advising institutional investors in the United States and European Union on corporate governance and global policy issues.
Prior to joining the Firm, Troncoso served as a prosecutor, senior in-house counsel, and legal and policy advisor across numerous sectors. He served as chief counsel and chief of public policy to then-California Attorney General Kamala D. Harris, overseeing the office’s priority litigation, enforcement, and legislative matters. In this role, he served as lead counsel for the State of California in securing the National Mortgage Settlement, the largest consumer financial protection settlement in state history that brought $20 billion in loan relief and direct payments to California homeowners. He led the state’s Mortgage Fraud Task Force and its investigations of securities law violations arising from the issuance of residential mortgage-backed securities. His team recovered nearly $1 billion in RMBS-related losses for California public pension funds.
Lawdragon Honors
| Honor | Year | Practice |
|---|---|---|
| The 2026 Lawdragon 500 Leading Plaintiff Financial Lawyers | 2026 | Securities Fraud Class Action Litigation, Governance |
Earlier in his career, Troncoso served for nearly six years as a trial attorney and assistant chief attorney for policy in the San Francisco District Attorney’s office, where he tried multiple criminal cases to jury verdict and led the office’s mortgage and investment fraud team, where he was responsible for investigating and prosecuting complex financial crimes from initial report through charging and trial.
Troncoso most recently served as Vice President at the Chan Zuckerberg Initiative, a philanthropic organization, where he led bipartisan policy and advocacy efforts nationwide. He also served in the University of California’s Office of General Counsel as managing counsel for health affairs and technology law and chief campus counsel, where he oversaw various litigation, regulatory, and data protection matters.
Troncoso serves on the Council of Institutional Investors Markets Advisory Council. He is a member of the Hispanic National Bar Association, the American Association for Justice, and an elected member of the American Law Institute. Troncoso speaks conversational Spanish.