Rachel Bremer

Spark Public Relations LLC provides public relations services. Its capabilities encompasses strategic counsel, media relations, social and digital media, company and product launches, materials development, thought leadership, event support, and brand positions. The firm works with businesses that range from stealth start-ups to global public companies, providing strategy consultation and creative public relations campaigns. The company was founded by Donna Sokolsky Burke and Chris Holten Hempel in 1999 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.

Balderton Capital (UK) LLP (Balderton Capital) is an Independent Venture Capital firm founded by Eric Archambeau in 2000. The firm is headquartered in London.

Milltown Partners LLP is an advisory firm based in London, UK. and has subsidiaries in the UK. The British company specializes in working on communications and policy challenges that define clients' reputations. It was founded in 2013, and the CEO is Jonathan Lenson.