Lissa Percopo is a partner in Gibson, Dunn & Crutcher’s Washington, D.C. office, where she is a member of the Firm’s Litigation Department. Lissa focuses her practice on securities litigation, with an emphasis in securities class actions and shareholder derivative actions. She represents clients at all stages of litigation, from pre-complaint counseling through appeals, and she regularly practices in state and federal courts around the country.
Representative Matters
- Defending HP Inc. and its current and former directors and officers in two securities class actions and related derivative suits in the U.S. District Court for the Northern District of California and the Ninth Circuit. Won consecutive motions to dismiss in one securities class action. The second is on appeal to the Ninth Circuit after the district court denied our motion to dismiss in part but granted our motion for interlocutory appeal on a novel statute of repose issue.
- Defending Energy Transfer LP, the country's largest pipeline company, as well as its senior officers and directors in both E.D. Pennsylvania and N.D. Texas securities class action and shareholder derivative actions challenging statements regarding various pipeline construction projects. Secured major win on summary judgment in the E.D. Pennsylvania securities class action, leading to favorable settlement. The motion to dismiss the N.D. Texas action remains pending.
- Defending DocGo Inc. in securities class action and certain directors/officers in derivative litigation related to statements regarding the former CEO’s credentials and company’s business prospects.
- Defending Rentokil Initial plc and certain officers in a securities class action in the W.D. of Tennessee over alleged misrepresentations tied to its $6.7B acquisition of Terminix Inc.
- Defending fitness franchisor F45 in a securities class action in the W.D. of Texas challenging IPO statements about its business model and performance.
- Defending Goldman Sachs, JPMorgan, and Bank of America in securities litigation in the Southern District of New York related to the IPO of LNG exporter Venture Global.
- Defended Bank OZK and its leadership in class and derivative actions in the E.D. of Arkansas following a stock drop tied to commercial loan write-downs. Achieved partial dismissal in the class action, full dismissal of the federal derivative suit, and resolution of remaining claims within policy limits.
- Represented JCPenney and certain officers in a securities class action over liquidity-related disclosures. Secured Fifth Circuit review of class certification and negotiated an insurance-funded settlement.
- Represented Danimer Scientific in a securities class action and Second Circuit appeal challenging statements about the biodegradability of its flagship product.
Lissa has been recognized by the Legal 500 US as a “Recommended Lawyer” in Securities Litigation: Defense for 2025. Lissa is also a seasoned general litigator, having represented clients in a variety of complex litigations, including class action, antitrust, contract dispute, and consumer fraud cases.
She serves on the Firm’s Hiring and Professional Development Committees, and she previously served on the Firm’s Associates’ Committee. She currently serves on the D.C. Office’s Diversity Committee. Lissa joined the firm in 2007 after graduating with highest honors from the George Washington University Law School. While at George Washington, she was a member of the George Washington International Law Review, and was elected to Order of the Coif. Lissa has also been an Adjunct Professor at the George Washington University Law School, where she taught Legal Research & Writing and Introduction to Advocacy.
Lissa graduated from the University of Virginia in 2001, with a Bachelor of Arts degree in History. She is a member of the bars of New York and the District of Columbia.
Capabilities
- Securities Litigation
- Accounting Firm Advisory and Defense
- Class Actions
- Labor and Employment
- Litigation
- Technology Litigation
Credentials
Education:
- George Washington University - 2007 Juris Doctor
- University of Virginia - 2001 Bachelor of Arts
Admissions:
- District of Columbia Bar
- New York Bar