Behind-the-scenes details of an agreement between Facebook and US privacy regulators in 2019 emerged in a Delaware court Wednesday, during a trial on investor claims the settlement cost them at least $7 billion.

Mark Zuckerberg is expected to appear as a star witness in an unusual $8 billion trial that kicks off this week at which the Meta CEO is accused of operating Facebook as an illegal enterprise that allowed users' data to be harvested without their consent.

Shareholders claim that Mark Zuckerberg and other top officials should have to reimburse Facebook for $8 billion in fines and penalties.