Twitter is a global platform for public self-expression and conversation in real time, where any user can create a tweet and any user can follow other users sharing text, photos, music and videos. Twitter was incorporated in 2007 and is based in San Francisco, California. On November 13, 2013, the Company completed its initial public offering in which it issued and sold 80,500,000 shares of common stock at a price to the public of US$26.00 per share. Currently, Twitter has more than 241 million monthly active users and over 2,700 employees in offices located in United States, Amsterdam, Berlin, Dublin, London, Madrid, Paris, Rio de Janeiro, São Paulo, Singapore, Sydney, Seoul, Tokyo, Toronto and Vancouver. In 2015, the company opened its third office in Latin America in Mexico City, aiming to strengthen ties with the country's content generators, as well as offer a first point of contact with local users and customers.