Who is our Yahoo CEO? Marissa Mayer, age of 37, has an estimated net worth of $300 Million. In 1999, the recent graduate from Stanford University joined a little-known startup with fewer than 20 employees who only had a 2% chance of success. Luckily she was one of them. Marissa worked in Google as a senior executive. Being the most powerful woman in Silicon Valley, she has offered lesson in how to attract women to a more male-dominated field. She believes woman can do anything they set their mind to and can always pursue anything that a man can. Marissa served as Google’s vice president of location and local services and recently on July 16, 2012 she became the CEO of Yahoo.