The Business Insider reports that Rubicon Project has seen two more high-profile defections after disappointing Q3 earnings and the loss of its CTO. Jay Sears Rubicon's SVP of marketplace development has joined Mastercard Advisors as head of its media solutions group, and Adam Chandler, senior vice president of global technology partnerships, departed to join Kargo, the mobile brand advertising startup. The departures, BI reports, come just a month after it was announced that Rubicon's CTO Neal Richter, would be shifting to an advisory role. Richter was replaced by Tom Kershaw, who joined Rubicon in October. In November, Rubicon laid off 125 people, or 19% of its total staff, according to the BI report.