SAN FRANCISCO — For the past week, Mark Zuckerberg has grappled with a backlash from lawmakers, regulators and users over Facebook’s mishandling of data privacy. He has also had to face another restive group: his own employees.

The Facebook chief executive has taken multiple steps over the past few days to communicate with the social network’s 25,000 employees over revelations last week that a British political consulting firm, Cambridge Analytica, had improperly obtained data of 50 million Facebook users.

The Silicon Valley company held a staff meeting on Tuesday to answer questions about Cambridge Analytica, featuring one of Facebook’s lawyers, Paul Grewal. On Wednesday afternoon, Mr. Zuckerberg addressed employees directly, according to two Facebook employees who asked not be identified because the proceedings were confidential. Mr. Zuckerberg also spoke with staff on Friday at a regularly scheduled employee meeting, said two people who attended the event.

Facebook declined to comment on the meetings.

Speaking to Facebook’s employees was a crucial prong of what has become an apology tour of sorts for Mr. Zuckerberg over the Cambridge Analytica fallout. The revelations have raised calls for Mr. Zuckerberg to appear before Congress to explain himself, as well as a #DeleteFacebook movement and other criticism.