I’m honored to share the story of my professional journey—one that has taken me from the trading floors of Chicago to leadership roles at some of the world’s top financial institutions, and now to the courtroom as a financial expert witness. I’ve always believed that integrity, depth of knowledge, and strategic clarity are the foundation of professional excellence. Here is my biography.

John Contino is a distinguished financial expert with over 41 years of experience in structured finance, mortgage analysis, and investment advisory. As the founder and principal of Sperlinga Advisory LLC, he has guided institutional clients through complex financial landscapes, specializing in mortgage-backed securities, mortgage servicing rights, and litigation support. His strategic foresight and risk management expertise have been instrumental in successfully navigating market volatility, including his leadership in de-levering investment funds ahead of the 2007 mortgage crisis. A respected expert witness, John has provided testimony in high-profile financial litigation cases, further showcasing his ability to analyze and communicate intricate financial matters. With a strong foundation in investment strategy and structured finance, he is now focused on leveraging his extensive expertise to help businesses grow and thrive in today’s evolving financial environment.