The case put a spotlight on Delaware courts and the judge handling the case, Chancellor Kathaleen McCormick, who gained prominence last year for rescinding Musk's $56 billion pay package from Tesla. That ruling is on appeal.

The settlement abruptly halted a high-profile trial in Delaware Chancery Court just as Zuckerberg and others were scheduled to testify.

The FTC fined Facebook $5 billion in 2019 after finding that it failed to comply with a 2012 agreement with the regulator to protect users' data.