More than 50 years of landmark results
Since 1967, Lowey Dannenberg has represented investors and major corporations in complex litigation, recovering billions of dollars on their behalf.Solutions for Complex Cases
Professional Recommendations
Recent Cases

Frasco v. Flo Health, Inc., No. 21-cv-00757 (N.D. Cal.).
Data Breach and Privacy, Existing Cases
Lowey Dannenberg serves as court appointed co-lead counsel in Frasco v. Flo Health, Inc., No. 21-cv-00757 (N.D. Cal.), a class action against Flo Health, Inc. (“Flo”), Google, LLC, Facebook, Inc., and Flurry, Inc.

Artuso Pastry Foods Corp. v. Packaging Corporation of America, et al. 1:25-cv-08856 (N.D. Ill.)
Antitrust
On October 28, 2025, Lowey was appointed Interim Co-Lead Class Counsel for purchasers of Containerboard Products in Artuso Pastry Foods Corp. v. Packaging Corporation of America, et al. 1:25-cv-08856 (N.D. […]

Lopez v. Apple, Inc., No. 19-cv-04577 (N.D. Cal.)
Data Breach and Privacy, Data Privacy
Lowey Dannenberg serves as co-lead class counsel in a class action on behalf of consumers alleging that Apple unlawfully and intentionally recorded Plaintiffs’ and class members’ confidential communications without their […]
News
Lowey Dannenberg and Co-Counsel File Class Action on Behalf of End-Payors for Immunosuppressive Drug Stelara (Ustekinumab)
On December 7, 2023, Lowey Dannenberg, P.C. and its co-counsel, representing named Plaintiff CareFirst BlueCross BlueShield,filed suit against Stelara manufacturer Johnson & Johnson (“J&J”) in the U.S. District Court for the Eastern District of Virginia. The…
Blog
What is a Securities Class Action?
A security class action is a lawsuit brought on behalf of a group of investors who have suffered a financial loss in a particular security, such as a stock, bond, or investment fund. Typically, the loss occurs because of fraudulent conduct or materially false statements made to investors in SEC…





