Atty. Serena P. Hallowell
With more than 20 years of complex litigation and securities experience, Serena Hallowell has been recognized by her peers as a leader in the plaintiffs’ securities bar and a Plaintiffs’ Lawyer “Trailblazer” in 2019 by National Law Journal for her work in securities opt-out litigation. As lead of Motley Rice’s direct-action litigation efforts, and a leader of the firm’s securities fraud team, Serena litigates for some of the world’s largest institutional investors, including pension funds, hedge funds, mutual funds, family offices, and other large institutional investors.
Profile Summary
About Serena P. Hallowell at a glance
Serena P. Hallowell is a Member based in New York, New York, practicing at Motley Rice LLC. Their practice focuses on class action. Educated at Boston University School of Law (J.D., 2003) and Occidental College (B.A., 1999). Serands clients in New York, NY and the surrounding metropolitan area.
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About
- With more than 20 years of complex litigation and securities experience, Serena Hallowell has been recognized by her peers as a leader in the plaintiffs’ securities bar and a Plaintiffs’ Lawyer “Trailblazer” in 2019 by National Law Journal for her work in securities opt-out litigation
- As lead of Motley Rice’s direct-action litigation efforts, and a leader of the firm’s securities fraud team, Serena litigates for some of the world’s largest institutional investors, including pension funds, hedge funds, mutual funds, family offices, and other large institutional investors
- She also regularly advises institutional investors and public entities regarding recovery opportunities in connection with fraud-related conduct
- She is actively litigating cases against Regeneron Pharmaceuticals, Meta’s directors and officers, and Fiserv Inc.. Prior to her time at Motley Rice, Serena was the head of a direct-action practice and member of the securities class action group as a partner of a large securities law firm in New York
- In that capacity, she was a key member of several litigation teams that achieved multi-million dollar settlements for clients, aggregating close to $500 million.* Serena has also led opt-out cases against companies, including Valeant Pharmaceuticals, Perrigo Company, and Teva Pharmaceuticals, for a variety of institutional investors seeking to recoup losses stemming from alleged fraud-related conduct
- With respect to Valeant, Serena and her team pursued claims under the New Jersey RICO statute and was the first opt-out plaintiff to successfully defeat a motion to dismiss those claims
- Certain Valeant actions have since been resolved and in 2025 Serena resolved the last two Valeant matters she was prosecuting on behalf of two large institutional investors (under confidential terms)
- Serena is a frequent speaker in legal circles throughout the country on matters related to securities litigation, AI and technology, and corporate governance. *Prior results do not guarantee a similar outcome
SELECTED PUBLICATIONS
•'Justices Should Acknowledge ESG’s Importance to Investors’ Law360 (June 2021) •‘Don’t Forget the “E” and the “S” in ESG: Securities Lawsuits Are No Longer Only About Corporate Governance’ NAPPA Report (October 2021) •'Mutual Funds Should Consider Shareholder Litigation,’ Law360 (Oct. 8, 2019) •‘Around the World in a Decade: The Evolving Landscape of Securities Litigation Post-Morrison,’ NAPPA (Nov. 26, 2019) •‘Emulex Highlights Greater Scrutiny of Issues at High Court,’ Law360 (April 25, 2019) •‘China Agritech’s Positive Implications for Plaintiffs,’ Law360 (July 3, 2018) •‘Direct Actions: A Path to Recovery for Foreign Purchases of Securities,’ The NAPPA Report (Oct. 31, 2017) •‘Investor Recovery Strategies Following ANZ Securities,’ Law360 (July 12, 2017) •‘Does ‘Dukes’ Require Full ‘Daubert’ Scrutiny at Class Certification?’ New York Law Journal (Nov. 25, 2011) Awards, Accolades & Recognitions Chambers USA 2025 Securities: Plaintiffs - New York, Band 2 2024 Securities: Plaintiffs - New York, Band 3 2020-2023 Litigation: Securities: Plaintiffs - New York, Up and Coming Benchmark Litigation 2020-2021 Future Star National Law Journal 2020 Elite Women of the Plaintiffs’ Bar 2019 Plaintiffs’ Lawyers Trailblazers Lawdragon 2019-2026 Leading Plaintiff Financial Lawyers Securities Litigation 2019-2020 Leading Lawyers in America Law360 2019 Securities MVP 2016 Rising Star The Legal 500 United States 2016-2017 Securities Litigation Super Lawyers 2022-2024 New York Metro Super Lawyers - Securities Blog Posts February 9, 2026 The impact of product recalls on shareholder wealth Causes, Not Just Cases by: Christopher Moriarty February 26, 2020 Decade in Review: Plaintiffs’ Litigation Highlights Causes, Not Just Cases by: Joseph F. Rice July 11, 2019 Corporate disclosure in the age of Twitter: Social media’s impact on pension funds Causes, Not Just Cases by: Annie E. Kouba News June 5, 2025 Motley Rice Nationally Ranked in 2025 Chambers USA Guide by: Motley Rice April 28, 2025 The history and legacy of Workers’ Memorial Day by: M. Nolan Webb
Practice Areas Explained
Serena P. Hallowell's Areas of Practice
Each practice area below reflects the types of cases Serena P. Hallowell handles, with a brief overview of what that area of law covers.
Serena P. Hallowell is one of 26,424 class action attorneys indexed nationally. Browse class action attorneys in New York →
Jurisdictional Context
Why local counsel matters in New York
Practicing law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in New York are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in New York courts without local counsel or pro hac vice admission.
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