The X15 Program

Preparing for your next mission.

Membership Application

Growth Leadership is the Essential Ingredient

We've Done It Before

Successful venture-backed companies require explosive growth. We believe that leaders with prior hypergrowth experience know what’s required to light the fuse, and they know what growth looks like. This is an everyday philosophy at Refinery Ventures, ringing true for our operating partners to our company founders.

The X15 Network

We built a curated talent network designed specifically for individuals with hypergrowth experience in the Great Lakes and Mid-South regions, including cities like Cleveland, Cincinnati, Pittsburgh, Columbus, Nashville, Bentonville, Indianapolis, Detroit, and Chicago.

Our network is designed for lifelong learners – those who see the next challenge as an opportunity. Whether it’s emerging technologies, new business models, or evolving talent needs, X15 provides the space to engage, ask questions, and act.

We offer a range of programming to support that exploration:
– Curated peer circles
– Tactical working sessions
– Tech revers pitches
– Deal flow reviews
– The X15 Summit
– And more, all designed to foster insight, connection, and momentum.

Whether you’re launching a company, scaling a new team, or exploring what’s next in your journey, X15 is here to back you. From early-stage ideation to strategic career shifts, our members support each other with honest dialogue and hard-won experience.

Learn More

To learn more about X15, please contact us

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Why X15?

To the Moon

Before Neil Armstrong became the first man to step foot on the moon, he was a pilot for the North American X-15, an experimental hypersonic rocket-powered aircraft that took great risks to break speed barriers and reach the edge of outer space during NASA’s infancy.

Armstrong reached hypersonic speed three times in the X-15 and achieved a max altitude of 207,000 feet, shattering the perception for what was thought possible. X-15 is widely regarded as one of the most successful research programs in aviation history and directly contributed to space exploration.

The X-15 was a Hypergrowth moment for the future of aviation and space exploration. Our program is a springboard to reach new heights and unlock our greatest potential.