The exit doors at Facebook keep swinging. This week, the company’s head of product communications Rachel Whetstone announced she was leaving to take a role at Netflix. The week prior, Dan Rose, the company’s longtime head of business partnerships, said he will be gone by early next year, joining four other senior Facebook executives who have left recently or said they will leave.

While each departure has unique circumstances, Facebook’s leaders faced extraordinary pressure over the past year, as the company was battered by criticism about its data privacy practices, the spread of misinformation and the social network’s overall impact on society. As he seeks to weather the storm, CEO Mark Zuckerberg is likely to lean more heavily than ever on the roughly 100 senior Facebook executives in this chart compiled by The Information. The chart identifies a smaller coterie of trusted leaders—known internally as the M-team—that Mr. Zuckerberg turns to for counsel.