Several founders of hot startups took big payouts and let Mark Zuckerberg gobble up their companies—and came to regret it.

Suited in variations of blue, Mark Zuckerberg took the stand Monday to defend his company’s past—and fight for its future. The CEO of Meta, Zuckerberg has helmed the company that began as ...

Instagram co-founder Kevin Systrom told a federal judge Tuesday that Meta CEO Mark Zuckerberg underinvested in the viral photo-sharing app after Facebook bought it, bolstering the Federal Trade ...