Adam Mosseri, head of Instagram since 2018, testified on August 26, 2026, in a federal court trial in Oakland, California, brought by four states as part of a 2023 lawsuit by 29 states against Meta. The proceedings focus on child safety and privacy issues, with Instagram's 2024 teen accounts and default take-a-break feature among the topics addressed. The trial, which began last week and is expected to last six weeks, involves California, Colorado, Kentucky, and New Jersey, while the remaining states will proceed later.