Gridiron Capital, an investment firm, agreed to acquire Vistage, a peer mentoring membership organization, from Providence Equity Partners, a private equity investment firm. Financial terms were not disclosed. "We are pleased with the growth Vistage has experienced in partnership with Providence Equity Partners. SMB leaders today are facing greater challenges than ever before, and we look forward to working with Gridiron Capital to expand our reach and serve the growing needs of more CEOs around the world, helping them become better leaders, make better decisions and deliver better results. The Gridiron team has extensive experience in the small business sector and fully appreciates the support and services that we provide to CEOs. Under the new partnership, Vistage will maintain its strong culture, operating principles, and purpose of helping high-integrity leaders make great decisions for their companies, families, and communities," Sam Reese, Vistage CEO.