Brantley Webb

Brantley Webb is an experienced litigator who focuses on complex civil litigation, including contract disputes, ERISA class action lawsuits, and trade secret matters. She represents technology companies, financial institutions, and other national and multinational corporations at all stages of civil litigation. She has substantial experience leading cases through discovery—including e-discovery, working with technical and financial experts, and taking and defending high-stakes depositions. She has tried multiple cases in federal court and before commercial arbitration panels.

Brantley has been recognized as a “Next Generation Partner” by Legal 500 (2024-2025) for ERISA Litigation, a Benefits “MVP” (2024) and “Rising Star” (2023) by Law360, “40 & Under” by Benchmark Litigation (2024), a “DC Rising Star” by The National Law Journal (2023), and a “Litigation Trailblazer” by The National Law Journal (2023) for her work on high-profile class action lawsuits, including winning the first-of-its-kind ERISA excessive fee jury trial. Working with Mayer Brown’s ERISA Litigation practice group, Brantley has achieved significant victories for top global companies and not-for-profit organizations at all stages of litigation. She also advises clients on investment-related matters under ERISA, including navigating ESG issues and litigation.

In her appellate practice, Brantley regularly represents clients and briefs cases in the federal courts of appeals and the US Supreme Court. She has argued appeals in the Fourth, Seventh, and DC Circuits.

Brantley graduated from Yale Law School, where she was an Articles Editor of the Yale Law Journal. She graduated magna cum laude and as a Senior Fellow with High Honors from Dartmouth College. Before joining Mayer Brown, she clerked for the Honorable Sandra L. Lynch, US Court of Appeals for the First Circuit. Her publications have appeared in the George Mason Law Review, the Yale Law Journal, and Law360.

REPRESENTATIVE MATTERS

• Lauderdale v. NFP Retirement, Inc., 2024 WL 751005 (C.D. Cal. 2024). Obtained an across-the-board victory after a bench trial on behalf of Wood Group US Holdings Inc. in an ERISA class action lawsuit. The case involved allegations that Wood imprudently selected flexPATH as the investment manager for Wood’s 401(k) plan, and then failed to monitor flexPATH and certain plan investments. After a nine-day bench trial, the court ruled in favor of Wood on all claims, concluding that the company acted appropriately in hiring flexPATH as an investment manager and in monitoring flexPATH, and the plan, thereafter.
• Mallet & Company, Inc. v. Lacayo, 19-cv-1409 (W.D. Pa. 2025). Obtained a unanimous jury verdict in favor of Mallet in a trade secret misappropriation and employment lawsuit. The jury found in favor of Mallet on all nine of its claims against the corporate and individual defendants. The case involved allegations that the corporate defendants had misappropriated Mallet’s trade secrets under federal and state law, tortiously interfered with Mallet’s employment agreements, and engaged in unfair competition. The jury awarded punitive damages for the defendants’ “willful and malicious” conduct.
• Vellali v. Yale University, 16-cv-1345 (D. Conn. 2023). Obtained a complete victory after a month-long jury trial on behalf of Yale University in a class action lawsuit alleging Yale had violated its duties under ERISA. The case involved allegations that Yale had breached its fiduciary duties to monitor its retirement plan's recordkeeping fees and investment options. After trial, the jury found no loss to the plan from Yale's failure to monitor recordkeeping fees, and no breach by Yale as to investment monitoring and share classes. As a result, the plaintiffs—who originally sought more than half a billion dollars in the case—were awarded zero dollars in damages.

• An “MVP” for Benefits – Law360
• A “Next Generation Partner” – Legal 500
• Ranked among the “40 and Under” – Benchmark Litigation
• A “Rising Star” – Law360
• A “DC Rising Star” – The National Law Journal
• Named a “Litigation Trailblazer” by The National Law Journal for her work on high-profile class action lawsuits, including winning the first-of-its-kind ERISA excessive fee jury trial

• Dartmouth College, AB, magna cum laude
  Senior Fellow with High Honors
• Yale Law School, JD
  Articles Editor, Yale Law Journal

• District of Columbia
• Tennessee