Yahoo CEO Marissa Mayer delivers a baby boy

Marissa Mayer delivered a baby boy last night.

The Yahoo CEO’s husband, Zachary Bogue, Tweeted this morning:

“Baby boy Bogue born last night. Mom (
@
marissamayer
) and baby are doing great–we couldn’t be more excited!”

Mayer’s executive assistant, Trish Crawley, tells me that they welcomed baby Bogue at exactly 22:22, or 10:22 p.m.

For Mayer, a math geek with a Masters in computer science, 22:22 means something, though we mortals have no idea what.

Mayer is on the cover of Fortune‘s Most Powerful Women issue, on newsstands now. She ranks No. 14 on the MPW list. That’s way up from No. 38 last year, when Mayer was a VP at Google (GOOG) with hardly a clue that her life was about to change.

Mayer, 37, broke the news of her pregnancy to Fortune last July, a few hours after Yahoo named her its new CEO.

What’s ahead for Mayer? Multitasking! She told me in July: “My maternity leave will be a few weeks long and I’ll work throughout it.” Indeed, restless investors are waiting for that Yahoo turnaround.

See who made the 2025 Fortune Most Powerful Women list. The definitive ranking of the women at the top of the global business world tells us both who wields power today and who is poised to climb even higher tomorrow.