Yahoo CEO Marissa Mayer pregnant with twin girls by Michal Lev-Ram @FortuneMagazine 2:55 AM EDT E-mail Tweet Facebook Linkedin Share icons Marissa Mayer, chief executive of Yahoo YHOO , has spent the past few years trying to execute the tech (or is it media?) company’s turnaround. But come December, she will have even more on her hands: According to a post published on her blog late Monday evening, Mayer and her husband, investor Zachary Bogue, are expecting identical twin girls. “The twins part was quite a surprise, because I have no family history of twins or any other predisposing factors,” wrote Mayer. “Zack and I have embraced the surprise and are very excited about these new additions to our family.” Mayer was criticized for setting “unrealistic expectations” for young women after she took only two weeks off following the birth of her first baby in 2012. But just a few months later, she extended Yahoo’s parental leave and added other perks for families, including giving new parents a $500 stipend for buying groceries and baby clothes. It appears Mayer will not be taking advantage of her own company’s maternity leave policy, however. The 40-year-old CEO, who once told Fortune that her priorities are “God, family, and Yahoo,” says she plans to take a similar approach to her pregnancy and delivery as she did with her son three years ago, taking “limited time away and working throughout.” “Moving forward, there will be a lot to do for both my family and for Yahoo; both will require hard work and thoughtful prioritization,” wrote Mayer in her blog post. In addition to carrying twins, another item on her to-do list is the spin-off of Yahoo’s stake in Alibaba. It’s going to be a busy year for Mayer. Subscribe to Data Sheet, Fortune’s daily newsletter on the business of technology.