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Stio, the mountain lifestyle brand born in Jackson Hole, Wyoming, announces several key additions to its leadership team, bringing fresh perspective and deep expertise to product, digital, and planning as the brand looks toward 2026 and beyond.
Siobhan Phillips joins Stio as Senior Product Line Manager, Apparel, where she will help guide the evolution of the brand’s women’s line. Based in Boulder, Colorado, Phillips brings experience spanning outdoor and ski, wholesale, and international brands, and joins the team to further elevate women’s product strategy and long-term assortment planning.
Thomas Stimpson steps into the role of Director of E-Commerce, bringing a thoughtful, experience-driven perspective to Stio’s digital growth. A former Jackson Hole local who has worked for leading brands in cycling and footwear, Stimpson will lead the continued evolution of Stio’s e-commerce platform and customer experience.
Kelsey Baker joins as Director of Inventory Planning, leading seasonal inventory strategy across channels. With a background in corporate inventory planning and a recent move from New York City to Ketchum, Baker brings a balanced approach that aligns operational rigor with Stio’s values and growth trajectory.
Katie Lambert comes on as Senior Manager of Retail Planning, supporting Stio’s expanding retail footprint. With experience in retail planning and a return to the outdoor industry, Lambert brings strategic expertise to help guide thoughtful, data-informed retail growth.
“These individuals bring deep expertise, fresh perspectives, and a shared passion for the mountain lifestyle,” said Catherine Brower, Director of People & Culture. “Together, they strengthen our ability to deliver thoughtful products, meaningful customer experiences, and sustainable growth.”
About Stio
Founded in 2011 in Jackson, Wyoming, Stio was born from a deep love of the mountain life. Time spent outside–on trails, in rivers and on summits–inspires everything the brand creates. Designed, developed and tested at the base of the Tetons, Stio creates premium, technical apparel for mountain athletes and everyday adventurers alike. Stio products can be found at stio.com, select outdoor specialty retailers and at their own Stio Mountain Studio® retail locations.