Cornerstone Building Brands, Inc. announced the joining of Jason Flack as president of the Stone Solutions business unit. In this role, Mr. Flack will lead the Stone Solutions organization, provide strategic direction, and establish a trusted partnership with its customers. He will assume the role effective December 1, 2021, and report directly to the president and chief executive officer, Rose Lee. Mr. Flack has more than 20 years of experience leading sales organizations for building materials and automotive companies, including most recently serving as Vice President, Sales for Firestone Building Products, where he led strategic sales planning and market performance across the Americas. Before Firestone Building Products, he spent five years with GCR Tires and Service and thirteen years with CertainTeed Corporation, holding progressively responsible roles in field sales, business development, national account management, and sales organization leadership.