On Wednesday, Marissa Mayer announced a new plan for the future of Yahoo. On Thursday, she gave gave birth to identical twin girls.
The Yahoo CEO tweeted that she, the twins and her husband, Zachary Bogue, are "doing great."
On her Tumblr blog, Mayer said the twins were born early Thursday morning.
"Thanks to everyone for all of the support and well wishes throughout my pregnancy," she posted.
She did not yet reveal the twins' names.
A Yahoo spokeswoman said in a statement the Mayer-Bogue family is "beyond thrilled."
"We couldn't be happier for them!" she said.
Mayer and Bogue also have a son, Macallister, who is 3 years old. Mayer revealed that she was pregnant with Macallister on the day she accepted the Yahoo (YHOO) job in July 2012.
The Yahoo CEO was criticized by maternity leave advocates for returning to work quickly after giving birth to her son. Mayer had a nursery installed close to her desk so she could work and help to take care of her child without going back and forth from her office.
When Mayer announced in August that she was expecting twins, she said she planned on taking a similar tactic.
"Since my pregnancy has been healthy and uncomplicated and since this is a unique time in Yahoo's transformation, I plan to approach the pregnancy and delivery as I did with my son three years ago, taking limited time away and working throughout," Mayer said in a Tumblr post.
Mayer stuck to that promise, appearing on a conference call with investors and on CNBC Wednesday morning to discuss Yahoo's plans to keep the company's lucrative Alibaba stake and spin off its core Internet business into a new company.
CNBC anchor David Faber offered Mayer well-wishes, which she thanked him for. She said during the interview that she was expecting the twins to arrive "later this month."
"There's always a lot to do on both the homefront and the workfront," Mayer said.
Mayer's twins were born just two weeks after Facebook (FB) CEO Mark Zuckerberg's wife Priscilla Chan gave birth to the couple's first child -- a daughter named Maxima.
