Judson Mark Grosvenor


Seasoned business executive Judson Mark Grosvenor has established prosperous companies across several states and industries. Judson Mark Grosvenor founded his first company, Jaymark Financial, in 1973. The international real estate firm operated from offices in California and Japan.

A decade later, he entered the food-supply industry with the creation of Medallion Foods, which boasted a robust client profile that included wholesalers such as Sam’s Club and Costco. The company was later acquired by Ralcorp.

His namesake company, Grosvenor Industries, opened in 1979. It handles construction and subdivision projects. He also launched businesses in Wyoming, including a ranch-development company and an excavation firm in Jackson Hole. While there, he was involved with the Jackson Hole Land Trust as well as the local Museum of Wildlife Art and the Center for the Arts.

Following decades of direct involvement in charitable organizations across the country and abroad, Mr. Grosvenor established his own family foundation, which funds some of his preferred charities, including the Wounded Warrior Project, an organization that supports veterans of post-9/11 wars.