Yahoo CEO Marissa Mayer gave birth to a baby boy on September 30.

Her husband, investor and philanthropist Zachary Bogue, tweeted the good news on the morning of October 1.

This is the couple's first child.

On July 16, shortly after it was announced that Mayer had been lured away from her position as a VP at Google, the newly minted Yahoo chief posted on her personal Twitter account that she was expecting a boy.

The Yahoo board was aware of her pregnancy when they offered her the position, she told Fortune in an interview on July 16. "They showed their evolved thinking," Mayer said.

She also told Fortune at the time that she was not planning to take maternity leave but said she would "work throughout it."

Business Insider's sources have said that Mayer plans to bring her baby in to the office with her. She may even "knock down one wall of her office" to accommodate the little guy.

According to the New York Times, the child was not due until October 7.

Shortly after Mayer's pregnancy was announced, TechCrunch reported that she was the "first-ever pregnant CEO of a Fortune 500 tech company."

The Times called Mayer, 37, an "anomaly," writing that "[m]ost executives reach the top level later in their careers, after their childbearing years."

"Just 20 companies in the Fortune 500 have women chief executives, and all but three of them, including Ms. Mayer, are over 50. Deanna M. Mulligan, chief of Guardian Life Insurance, is 48, and Heather Bresch, chief of Mylan, is 43," the Times elaborated.

UPDATE: Apparently, the new baby hasn't been named yet. Journalist and consultant Jeff Jarvis tweeted that Mayer has emailed a large number of her contacts asking for suggestions for a baby name.

That means Mayer's already back online mere hours after giving birth. It seems likely that she won't be missing much work as she recovers. A Yahoo spokesperson told the Register that Mayer will be "working remotely and is planning to return to the office as soon as possible, likely in 1-2 weeks." In a statement given to Reuters, a Yahoo rep said Mayer will remain "involved in all critical decisions making" during that time.


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The most influential women in tech, according to PeekYou.
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  • #9: Ellen Kullman, CEO Of DuPont

    PeekScore: 7.32 / 10.00 <a href="http://www.peekyou.com/ellen_kullman/78658725" target="_hplink">Ellen Kullman</a> began her <a href="http://www2.dupont.com/Our_Company/en_US/executives/kullman.html" target="_hplink">career at DuPont</a> about 24 years ago, working her way from marketing manager up through the ranks of executive vice president to president to her current position as CEO and chair of the board, which she began on January 1, 2009.

  • #8: Virginia Rometty, CEO And President Of IBM

    PeekScore: 7.60 / 10.00 <a href="http://www.peekyou.com/ginni_rometty/333679852" target="_hplink">Virginia "Ginni" Rometty</a> was appointed to her current positions as president and CEO of IBM <a href="http://www-03.ibm.com/press/us/en/biography/10069.wss" target="_hplink">just this past year</a>, on January 1. One of her biggest accomplishments over the course of her 31-year career at IBM was the acquisition she led of consulting firm PricewaterhouseCoopers Consulting <a href="http://www.nytimes.com/2011/10/26/technology/ibm-names-a-new-chief.html?pagewanted=all" target="_hplink">for $3.5 billion</a>.

  • #7: Cher Wang, Co-founder And Chairperson Of HTC

    PeekScore: 7.68 / 10.00 In addition to co-founding HTC Corp., <a href="http://www.peekyou.com/cher_wang/167494999" target="_hplink">Cher Wang</a> founded the computer processor supplier VIA Technologies, Inc. <a href="http://www.htc.com/www/about/#leadership" target="_hplink">in 1987</a>. Last October, <a href="http://www.forbes.com/sites/ericsavitz/2011/10/26/cher-wang-the-most-powerful-woman-in-wireless-takes-on-apple/" target="_hplink">Forbes named Wang</a> "The Most Powerful Woman In Wireless."

  • #6: Safra Catz, President Of Oracle

    PeekScore: 7.80 / 10.00 <a href="http://www.peekyou.com/safra_catz/51174974" target="_hplink">Safra Catz</a> assumed the role of president of hardware and software company Oracle <a href="http://www.oracle.com/us/corporate/press/BoardofDirectors/016342.htm" target="_hplink">in January 2004</a>. <a href="http://money.cnn.com/galleries/2011/fortune/1109/gallery.highest_paid_women.fortune/index.html" target="_hplink">According to CNNMoney</a>, Catz is the highest paid woman in business, with total earnings of $42,095,887 in 2010.

  • #5: Ursula Burns, CEO Of Xerox

    PeekScore: 7.89 / 10.00 <a href="http://www.peekyou.com/ursula_burns/57999322" target="_hplink">Ursula Burns</a> joined Xerox <a href="http://news.xerox.com/pr/xerox/ursula-m-burns.aspx" target="_hplink">more than 30 years ago</a> as a mechanical engineering summer intern and has held her position as CEO since July 2009. Shortly after becoming CEO, she led the <a href="http://online.wsj.com/article/SB125413413514545919.html" target="_hplink">$6.4 billion purchase</a> of Affiliated Computer Services, <a href="http://news.xerox.com/pr/xerox/ursula-m-burns.aspx" target="_hplink">the largest acquisition in Xerox history</a>.

  • #4: Susan Wojcicki, SVP Of Advertising At Google

    PeekScore: 8.00 / 10.00 <a href="http://www.peekyou.com/susan_wojcicki/76320003" target="_hplink">Susan Wojcicki's</a> run with Google started even before Google began. Back in 1998, Wojcicki rented out her garage -- the tech giant's birthplace -- to its co-founders, Larry Page and Sergey Brin, <a href="http://www.usatoday.com/tech/techinvestor/corporatenews/2007-07-04-google-wojcicki_N.htm" target="_hplink">for $1,700 a month</a>. After Google got on its feet, Wojcicki served as <a href="http://www.crunchbase.com/person/susan-wojcicki" target="_hplink">its first marketing professional</a>, eventually reaching her current position as senior vice president of advertising <a href="http://bits.blogs.nytimes.com/2010/10/25/google-promotes-susan-wojcicki-advertising-executive/" target="_hplink">in October 2010</a>.

  • #3: Marissa Mayer, VP Of Location And Local Services At Google

    PeekScore: 8.22 / 10.00 At just 37 years old, <a href="http://www.peekyou.com/marissa_mayer/3429432" target="_hplink">Marissa Mayer</a> is the <a href="http://www.crunchbase.com/person/marissa-mayer" target="_hplink">youngest member</a> of Google's executive operating committee. The talented exec joined the Google team fresh out of Stanford <a href="http://www.huffingtonpost.com/2011/07/06/google-marissa-mayer-women-in-tech_n_891167.html" target="_hplink">back in 1999</a>.

  • #2: Sheryl Sandberg, COO Of Facebook

    PeekScore: 8.34 / 10.00 <a href="http://www.peekyou.com/sheryl_sandberg/365002232" target="_hplink">Sheryl Sandberg</a> also has some ties to Google -- she used to serve as the company's vice president of global online sales and operations. Nowadays, Sandberg is one of the most powerful women in tech as Facebook's COO, a position she <a href="http://allthingsd.com/20080304/sheryl-sandberg-will-become-coo-of-facebook/" target="_hplink">snagged in March 2008</a>.

  • #1: Meg Whitman, President And CEO Of Hewlett Packard

    PeekScore: 8.98 / 10.00 Since becoming HP's new president and CEO b<a href="http://www.huffingtonpost.com/2011/09/22/meg-whitman-hp-ceo_n_976597.html" target="_hplink">ack in September 2009</a>, <a href="http://www.peekyou.com/meg_whitman/50531455" target="_hplink">Meg Whitman</a> has made some bold moves -- most recently, <a href="http://www.huffingtonpost.com/2012/03/20/hp-pc-printer_n_1367656.html" target="_hplink">Reuters revealed</a> her plans to combine the company's PC and printing divisions in order to streamline sales. While it's <a href="http://www.latimes.com/business/la-fi-meg-whitman-20120405,0,4066578.story" target="_hplink">still yet to be seen</a> whether Whitman can turn HP around, she certainly <a href="http://www8.hp.com/us/en/company-information/executive-team/meg-whitman.html" target="_hplink">has enough experience to help her out</a>: Prior to her current position, she served as president and CEO of eBay for 10 years, from 1998 to March 2008.

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