Sibrecht Diender, Founder of Yellow Everest, is a seasoned expert in relational contracting with nearly 20 years of experience in procurement and supply chain. As a certified Vested coach since 2016, she has guided numerous companies globally in transitioning to relational contracts and strengthening partnerships for long-term strategic success. She is a valued member of the Vested Board of Advisors, bringing her expertise and insight to shape its strategic direction. Bonnie Keith, a strategic sourcing visionary with over 35 years of experience in senior executive operations and supply management, is a sought-after coach developing highly-collaborative, sustainable B2B relationships that focus on value creation. She is a Certified Vested Coach and on the Vested Advisory Board. Bonnie founded The Forefront Group, serving hundreds of companies including 50 Fortune-100 companies and the public sector.