Pomerantz LLP and Bronstein, Gewirtz & Grossman filed a securities class action Thursday in New York Southern District Court against Oscar Health and its top executives in connection with the company’s March 2021 IPO, which brought the company $1.3 billion in net proceeds, according to court documents.

The lawsuit accuses the defendants of misleading investors regarding the company’s growing COVID-19 testing and treatment costs. Counsel have not yet appeared for the defendants.