Read previewNoah Kagan, an early Facebook employee, may have worked for Mark Zuckerberg for only nine months, but he says the brief stint taught him a lot about Zuckerberg's management style. Then I got fired," Kagan wrote in an X post on Tuesday before launching into what he said were the "10 non-obvious lessons" he picked up from Zuckerberg. Kagan joined Facebook as a product manager in 2005, the same year Zuckerberg dropped out of Harvard University to run the company full time. Representatives for Kagan and Zuckerberg didn't immediately respond to a request for comment from Business Insider sent outside regular business hours. Zuckerberg told employees in January 2023: "I don't think you want a management structure that's just managers managing managers, managing managers, managing managers, managing the people who are doing the work."

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