Ben Horowitz — Role / Title: Co-founder and General Partner, Andreessen Horowitz

Note: The source explicitly states that Ben Horowitz co-founded Andreessen Horowitz on July 6, 2009, and describes him as a 'co-founder of the venture capital firm Andreessen Horowitz.' The claim specifies 'as of 2009-07' (July 2009), which matches the launch date of July 6, 2009. While the source does not explicitly use the title 'General Partner,' it confirms his co-founder status at the firm during the specified time period. The role of General Partner is a standard position for venture capital firm co-founders and is consistent with the source material, though not explicitly stated.