In January of 2006, the PRI Makers Network and Stanford Graduate School of Business’s Center for Social Innovation sponsored the first annual Program-Related Investments (PRI) Conference in Palo Alto, California. The conference brought together 150 professionals from foundations ranging in size, programmatic focus, geographic concentration, and familiarity with PRIs. Conference participants shared best practices, discussed emerging innovations, and built professional networks. The organizers and participants aimed to increase the prevalence and efficacy of PRI making.