John Castiglione

Head of Legal

John is Head of Legal for Flourish, where he is responsible for directing Flourish’s legal and compliance organization across Flourish’s rapidly expanding fintech business.  

Prior to joining Flourish in 2022, John served at the Office of the New York State Attorney General where he had worked since 2014, most recently as Senior Enforcement Counsel in the Investor Protection Bureau. In that role, John led investigations and litigations enforcing New York’s securities, commodities and business fraud statutes and was responsible for overseeing litigation strategy and execution, supervising attorney teams, and case management. His areas of substantive focus included electronic trading and market structure, virtual asset trading, digital ad markets, and platform engagement/user metrics disclosures. John was Chair of the Investor Protection Bureau Legal Standards and Practices Committee and drafter and continuing editor of the IPB Practice Guide and Enforcement Manual.

Prior to that role, John served as Senior Associate for Latham & Watkins LLP. There, he worked on securities and complex multi-national litigation matters and was point of contact with insurers and expert witnesses. During his time at Latham, John was active on various pro bono matters, including coordinating Latham’s partnership with the Legal Aid Society to represent undocumented juvenile immigrants before state court and DHS. He also represented pro bono clients in successful appeals before the Second and Fifth Circuit Court of Appeals.

John earned his B.A, magna cum laude, from The College of William and Mary and his J.D., summa cum laude, from The George Washington University Law School.

Fun fact: When not at work, John can usually be found gardening and farming. For the past 10 years, he has grown heirloom tomatoes from the seeds of the previous years' crop.

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Flourish is an online platform through which investors can access financial services and products. Flourish’s offerings are provided by different entities and are subject to different terms, investor protections, and risks. Flourish Cash is offered by Flourish Financial LLC, a registered broker-dealer and FINRA member. Flourish Financial LLC is not a bank. Check the background of Flourish Financial LLC and its personnel on FINRA's BrokerCheck. Flourish Annuities refers generally to the annuity platform operated by Flourish Technologies LLC, where applicable, and to Flourish Insurance Agency LLC in its capacity as a licensed insurance producer providing insurance services related to such platform. Flourish Insurance Agency LLC does business in California under the name Flourish Digital Insurance Agency. An annuity is an insurance contract. Annuities shown on the platform are sold through Flourish Insurance Agency LLC, a licensed insurance producer, with offices in Jersey City, New Jersey, and are issued by one or more approved licensed life insurance companies. The Flourish entities mentioned above are affiliates. Flourish Cash and Flourish Annuities accounts are separate accounts and only assets in Flourish Cash accounts may be eligible for protection by the FDIC or SIPC. Please review the Legal section of our website, and the disclosures provided with each Flourish service or product, for further information. If you were introduced or invited to Flourish by an investment advisor or other third party, please be aware that, unless otherwise disclosed to you, they are not affiliated with any Flourish entity. The role of the investment advisor or other firm that invited you to Flourish may vary between different Flourish services and products, as further described in your terms of service. © 2024 Flourish. All rights reserved.