Skip to main content


Spark provides an unhurried, thought-provoking experience about what drives individuals, teams and organizations to thrive, and how readers can use that knowledge to ignite and direct their own careers.

Chris Mettler

Founder of Sovereign


Chris Mettler is Founder of Sovereign, a private venture studio, where he leads business strategy. Chris also serves on the board of directors of ServisFirst Bank (Nasdaq SFBS). He is a graduate of Vanderbilt University and holds an MBA in Business Strategy from Northwestern University’s Kellogg School of Management. He lives in Charleston, South Carolina.


Jon Yarian is a writer, speaker, serial entrepreneur and performance coach. He works with Chris at Sovereign and previously co-founded a brand design studio and a strategic communications consultancy. He lives in Charleston, South Carolina.

Jon Yarian

Writer, Speaker, Serial Entrepreneur and Performance Coach