Yahoos welcomed a new member to their ranks Sunday night: the son of Chief Executive Marissa Mayer.

She gave birth Sunday, according to a Twitter message from her husband, Zachary Bogue.

“Baby boy Bogue born last night. Mom (@marissamayer) and baby are doing great — we couldn’t be more excited,” he wrote in a message Monday morning.

He did not mention the baby’s name.

Mayer, who was appointed Yahoo’s chief executive in July, has been making a lot of changes at the company since her appointment. She recently made headlines after outlining a plan to employees to focus on personalization and mobile, and to explore partnerships. She also replaced the company’s chief financial officer, Tim Morse, with Silicon Valley veteran Ken Goldman.

With things moving quickly at Yahoo, Mayer has said that she will work remotely and will return to the office as quickly as possible. In a statement to MarketWatch, a Yahoo spokesperson said that the executive will be back in the office “as soon as possible, likely in 1-2 weeks.” Mayer had said earlier that she expected to take several weeks of leave.

Mayer announced her pregnancy on the same day as her CEO appointment and said at the time that Yahoo’s board did not have any concerns about the fact that she would go on maternity leave so soon after taking the helm.

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