Michael Sippey

Part of The Arena Group Holdings, Inc., Six Apart Ltd. is a company that builds websites using a powerful content management system called Movable Type. The company is based in San Francisco, CA. The company's blogging software and static publishing platform make site management easy and effective. The company was founded in 2001 by Mena G. Trott, Benjamin Trott, Ben Trott, Reid G. Hoffman. Nobuhiro Seki has been the CEO of the company since 2003.

Advent Software, Inc. offers software and services that automate work flows and data across investment management organizations. It develops, markets, and sells software products, Software-as-a-Service, hosting services, and data interfaces. The company was founded by Stephanie G. DiMarco in 1983 and is headquartered in San Francisco, CA.

X Corp. is a global platform for public self-expression and conversation in real time. It provides a network that connects users to people, information, ideas, opinions and news. The company's services include live commentary, live connections and live conversations. Its application provides social networking services and micro-blogging services through mobile devices and the Internet. The company can also be used as a marketing tool for businesses. Its products and services include Promoted Tweets, Promoted Accounts and Promoted Trends. Twitter was founded by Jack Dorsey, Christopher Isaac Stone, Noah E. Glass, Jeremy LaTrasse and Evan Williams on March 21, 2006, and is headquartered in San Francisco, CA.