Three Constantine Cannon Partners Named in The 2026 Lawdragon 500 Leading Plaintiff Financial Lawyers Guide
By the Constantine Cannon Whistleblower and Antitrust Teams
Constantine Cannon is delighted to announce that three of our firm’s partners, Jean Kim, Marlene Koury, and Taline Sahakian, were selected for The 2026 Lawdragon 500 Leading Plaintiff Financial Lawyers guide.[1]
The 500 Leading Plaintiff Financial Lawyers on this year’s list were chosen through submissions, editorial vetting from peers, and journalistic research.[2]
According to Lawdragon: “These amazing advocates find pathways to justice for investors who have been defrauded, companies who have been blocked from fair competition and consumers who have been duped, hornswoggled and otherwise had their rights trampled on by ruthless corporations, from social media to pharmaceuticals.”
This year’s guide is Lawdragon’s 9th edition covering “the shining stars of the plaintiff financial bar.” Every year, “the accomplishments of these lawyers astound in both the sheer size of the financial compensation they achieve and in the perseverance and legal skill required to succeed in these cases.”[3]
Here is more information about our firm’s superstars included in The 2026 Lawdragon 500 Leading Plaintiff Financial Lawyers guide:
Jean Kim
In The 2026 Lawdragon 500 Leading Plaintiff Financial Lawyers guide, Ms. Kim was selected in the Antitrust & Commercial Litigation practice areas. Ms. Kim was previously selected in Lawdragon’s Plaintiff Financial Lawyers guides in 2025, 2024, 2023, 2021, and 2019.
Ms. Kim is a partner in the New York office of Constantine Cannon, focusing on antitrust litigation and counseling and general commercial litigation. She has extensive experience in antitrust, First Amendment, class action, and general commercial litigation. Although many of her matters have successfully settled prior to trial, she has participated in federal trials, preliminary injunction/TRO proceedings and evidentiary hearings. In 2025, Ms. Kim settled an antitrust consumer class action on behalf of a class of California premium payers against Sutter Health, a dominant healthcare system in Northern California, for $228.5 million.
Marlene Koury
Ms. Koury is a partner in the San Francisco office of Constantine Cannon. She has been named one of the 500 Leading Plaintiff Financial Lawyers by Lawdragon for eight years, from 2019 to 2026, in the Whistleblower & Antitrust Litigation practice areas.
Ms. Koury started her career concentrating on antitrust litigation in the healthcare sector and later co-founded the firm’s whistleblower practice.
Ms. Koury’s work centers on representing whistleblowers in a range of complex matters, including anti-money laundering and Bank Secrecy Act violations, healthcare fraud involving Medicare and Medicaid reimbursement, pharmaceutical and medical device marketing, and kickbacks, and fraud in the for-profit education sector.
Ms. Koury shared, “We are honored to be included in The 2026 Lawdragon 500 Leading Plaintiff Financial Lawyers guide. At our firm, I am grateful to work with such an extraordinary team.”
Taline Sahakian
2026 is Ms. Sahakian’s fifth consecutive year being featured in the Lawdragon 500 Leading Plaintiff Financial Lawyers guide in the practice area of Antitrust since 2022. In January, Ms. Sahakian also was named in The 2026 Lawdragon 500 Leading Global Antitrust & Competition Lawyers list.
Ms. Sahakian is a partner in the New York office of Constantine Cannon. She concentrates her practice on antitrust litigation and counseling as well as general commercial litigation, and arbitration. For years, she has represented over 60 of the nation’s largest corporations as plaintiffs bringing multi-billion-dollar antitrust claims against payment card networks and banks.
Ms. Sahakian also represents whistleblowers in the government contracting and payments sectors.
About Constantine Cannon LLP
Constantine Cannon, with offices in New York, Washington, D.C., and San Francisco, has extensive expertise in practice areas including antitrust and complex commercial litigation, whistleblower representation, government relations, securities and e-discovery. The firm is responsible for two of the top five antitrust settlements in U.S. history.
Constantine Cannon’s antitrust practice is internationally recognized across multiple industries including healthcare, banking, electronic payments, insurance, high tech, telecommunications, the Internet and government contracting. The firm’s Whistleblower Team has been responsible for many major successes over the past two decades, including several record recoveries for the government and the firm’s clients. In total, our representations have led to more than $1 billion in government and whistleblower recoveries, in addition to over $5 billion recovered for the firm’s other clients.
Sources:
[1] See https://www.lawdragon.com/guides/2026-03-27-the-2026-lawdragon-500-leading-plaintiff-financial-lawyers.
[2] See https://www.lawdragon.com/methodology/lawdragon-500-leading-plaintiff-financial-lawyers-selection.
[3] Id.