The four-year-old lawsuit alleged that Facebook violated consumer privacy laws by sharing personal data of users with third parties such as the now-defunct British political consultancy Cambridge Analytica.

Facebook has said its privacy practices are consistent with its disclosures and "do not support any legal claims".

Facebook and its lawyers from Gibson, Dunn & Crutcher did not immediately respond to a request for more details regarding the settlement.

Of the two law firms representing the plaintiffs, Keller Rohrback did not comment while Bleichmar Fonti & Auld declined to comment.