Wennmachers is a partner at VC firm Andreessen Horowitz, where she heads its marketing efforts. She joined Andreessen Horowitz in July 2010, prior to which she co-founded OutCast Communications, which became a subsidiary of Next Fifteen in 2005. Prior to OutCast, Wennmachers spent over four years at Blanc & Otus.
Next Fifteen CEO Tim Dyson told PRWeek via email that the group has ambitious growth plans and has appointed a new board to help achieve that ambition. In May, the group appointed experienced British media and advertising executive Richard Eyre as chairman, replacing long-time incumbent Will Whitehorn.
Founded by Marc Andreessen and Ben Horowitz in Menlo Park, California in June 2009, Andreessen Horowitz provides seed, venture and growth-stage support to technology companies and has $1.2 billion under management across two funds. Its 60 investments include iconic brands such as Facebook, Foursquare, Groupon, Skype, Twitter, and Zynga.
With 48 offices in 19 countries, Next Fifteen owns PR agencies including Text 100, Bite Communications, The OutCast Agency, Lexis, M Booth & Associates, 463 Communications, and Beyond. In the financial year ended 31 July 2010, Next Fifteen posted revenue of £72.3m and operating profit of £6.5m.