Matt Matrisian is President of Signature Estate & Investment Advisors (SEIA), a Los Angeles-based registered investment advisor overseeing over $30 billion in assets. Effective April 28, 2025, he joined SEIA from AssetMark—where he led growth initiatives and helped scale AUM from $20 billion to $140 billion—bringing more than 15 years of experience in M&A, advisor engagement, and practice expansion.

In his role, Matt co-leads national expansion, focusing on both organic growth and strategic acquisitions, while enhancing advisor infrastructure—particularly in estate, tax and financial planning services.