The document presents a maturity model for open innovation with four stages: 1) Experimentation - Open innovation initiatives are pilot projects led by individual business units. Most companies operate at this stage. 2) Commitment - Senior leadership supports open innovation, and some formal resources are allocated. Companies begin organizational and cultural embedding. 3) Sustainable state - Open innovation is a strategic mandate with significant resources. Cost-benefit analyses and continuous use of open approaches are established. Few companies reach this stage. 4) Full integration - Open innovation is fully culturally embedded across the organization through innovation networks and seamless integration with enterprise technologies. Shareholder value from open innovation is demonstrated. Very few companies operate at the highest level.