John J. O'Brien
Co-leader of Morgan Lewis’s registered funds practice, John J. “Jack” O’Brien helps asset managers form and distribute new products, navigate regulatory issues, and design corporate structures and investment transactions. He works with all types of registered and private, open- and closed-end fund structures and works on adviser regulatory issues, particularly marketing, pay-to-play and state lobbying matters. He also has experience with exchange-traded fund (ETF) trading, having represented a number of AP broker-dealers over the last two decades.
Jack is also the managing partner of the firm’s Philadelphia office, an adjunct professor at Georgetown University Law Center (where he co-teaches courses on fiduciary duties and private funds), and a co-author of the Mutual Fund Regulation and Compliance Handbook.
- University of Illinois, 2005, B.S.
- University of Illinois, 2005, B.A.
- Villanova University, 2008, M.B.A.
- Villanova University School of Law, 2008, J.D., Cum Laude
- Pennsylvania
Recommended, Investment fund formation and management: Mutual/registered/exchange-traded funds, The Legal 500 US (2024, 2025)
Member, Best ETF Law Firm, ETF Express US Awards (2021, 2022, 2025)
Named, Rising Star of Mutual Funds, Mutual Fund Industry Awards 2019
Member, ETF Law Firm of the Year, ETF.com (2019)
Member, Best ETF Legal & Compliance Firm, ETF Express (2019)
Member, Practice Group of the Year, Asset Management, Law360 (2017)
Member, Philadelphia Bar Association
Associate, Villanova Law J. Willard O'Brien American Inn of Court (2010–2014)
Director and Treasurer, Philadelphia VIP, Inc. (2011–2016)
Arthur J. Kania Prize in Professional Ethics, Villanova School of Law (2008)
Dorothy Day Service Award, Villanova School of Law (2008)
Next Generation Lawyer, Investment fund formation and management: Mutual/registered/exchange-traded funds, The Legal 500 US (2018)
Recommended, The Legal 500 US (2016)
Named, Lawyers on the Fast Track, The Legal Intelligencer (2017)
Named, On the Rise – Top 40 Young Lawyer, American Bar Association (2017)