By Sarah McBride SAN FRANCISCO (Reuters) – Just about everyone in Silicon Valley has dreamed of striking it rich with a well-timed investment. Here is a list of the number and value, based on the closing price of $44.90, of the shares owned by some of the people and investment firms that have benefited the most from Twitter’s initial public offering on Thursday. At the market close, Twitter’s valuation was $24.47 billion. Executive officers and directors: Evan Williams – 56,909,847 shares, or 12 percent, worth $2.56 billion. …