Elon Musk has become a father for the 12th time.

The 52-year-old billionaire reportedly welcomed into the world his third child with Neuralink executive Shivon Zilis — with whom he also has two-year-old twins Strider and Azure — earlier this year, though it is not known what sex the baby is, or their name.

A new report from Bloomberg stated: “He’s fathered at least 12 children, six of them in the past five years — three with the musician Grimes and three with Neuralink Corp.’s director of special projects, Shivon Zilis, including one who hasn’t been known to the public until now.”