Multiple Securities Class Actions Target Coupang Over Alleged Undisclosed Cyber Breach

Overview

• Rosen Law Firm, Holzer & Holzer, Bronstein, Gewirtz & Grossman, and Gainey McKenna & Egleston announced filings on behalf of Coupang investors, including a case in the Northern District of California.
• The complaints allege a former employee accessed sensitive customer information for nearly six months due to inadequate cybersecurity controls.
• Plaintiffs contend Coupang failed to file a timely current report with the SEC about the incident, increasing the risk of regulatory and legal scrutiny.
• Most firms define the proposed class period as August 6 to December 16, 2025, while Robbins LLP cites an earlier start date of April 6, 2025.
• The firms assert that Coupang’s share price fell when the breach details became public and note that no class has been certified.