Brian Barnum

Brian is currently COO/CFO at the Rubicon Project, an online advertising technology company.

He has extensive executive experience around IPO’s and M&As for online businesses. As CFO at, Brian prepared the company for an IPO, and managed the M&A process, culminating in a $415 million acquisition by eBay. As COO & CFO at, Brian helped orchestrate the $350 million acquisition by Dex One Corp (formerly known as R.H. Donnelly), and he later became President of Dex One Digital, encompassing all digital business lines for the Yellow Pages publisher.

In 2007, the Los Angeles Business Journal named Brian CFO of the year in the category for private companies up to $100 million.

Brian holds a Bachelor of Arts degree in Economics from Stanford University, and an MBA from the Anderson Graduate School of Management at UCLA.