Brienne Letourneau

BRIENNE LETOURNEAU is a skilled litigator who handles complex business disputes, high-stakes ERISA and consumer class actions, and other critical matters for businesses and institutions. She represents public and private companies and organizations across sectors such as financial services, consumer goods, asset management, and higher education, as well as directors, officers, trustees, and other fiduciaries. Brienne combines strategic insight, creativity, and practical judgment to deliver results that resolve her clients’ legal challenges and advance their business objectives.

Brienne has extensive experience representing clients in a broad range of complex disputes, including:

• Defending ERISA and fiduciary litigation involving the management and investment of retirement, pension, and trust assets, including claims alleging excessive fees, imprudent investments, prohibited transactions, self-dealing, and disputes over pension plan benefits, funding, and administration.
• Defending consumer class actions across a variety of sectors, including consumer products, food and beverage, and marketing services, involving allegations that marketing, labeling, and advertising practices were deceptive, misleading, or unfair.
• Resolving director-and-officer and other professional-liability matters involving corporate governance, oversight, and risk-management responsibilities, including claims alleging breaches of duty, mismanagement, and disloyalty.

• Enforcing and challenging contracts, pursuing and defending business torts, and managing professional liability claims in a variety of industries and sectors.
• Responding to and challenging government subpoenas and investigative demands.

Brienne has achieved favorable outcomes for her clients in state and federal courts and arbitral tribunals across the country — from pre-litigation negotiation to winning motions and trials and appeals.

Brienne’s work has earned recognition in leading legal directories and publications. She is ranked in Chambers USA for Litigation: General Commercial (Illinois, 2025–2026), where she is described as an “all-star lawyer” who is “very good at really digging in and understanding what is driving the business” (2026) and “exceptionally intellectually rigorous, responsive, and creative” (2025). Legal 500 United States has recognized her as a “Key Lawyer” for ERISA Litigation (2026) and General Commercial Disputes (2024–2025), noting she is an “effective and zealous advocate” who provides “the highest level of client service” (2024). Brienne received honors from Crain’s Chicago Business as one of the “Notable Women in Law” (2024) and as a “Rising Star in Law” (2021). The Chicago Daily Law Bulletin selected her among the “Women in Law Leaders” (2024) and as one of the “40 Under Forty” in 2022, and Benchmark Litigation recognized her as one of the “40 and Under” top emerging talents in litigation in 2023, 2024, and 2025. The American Lawyer also included Brienne in its inaugural list of “Midwest Trailblazers” (2021).

Brienne is committed to providing pro bono legal services to clients in need and nonprofits with respect to civil actions and other legal issues that affect their mission and vision.

• Member, American Bar Association
• Member, Chicago Bar Association
• Member, Goodman Theatre, Business Council