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Leadership Team

SUBTA Founders

Paul Chambers

Paul Chambers is the CEO and Co-Founder of the Subscription Trade Association (SUBTA) and CEO and Founder of Core3 Solutions, a parent company to Element5 Digital, Gentleman’s Box, Rocket Effect, Moka Boka, and Unity Management System. Paul has extensive expertise in the subscription economy and digital marketing, dating back more than two decades, and he has been recognized by Crain’s Detroit Business as a 20 In Their 20’s. In his spare time, Paul is a firefighter in the City of Troy and loves to spend time with the world’s most amazing wife, twin daughters, and two sons.

Chris George

Chris George is the Co-Founder and Chairman of the Board of SUBTA. He is also the founder of Certified, a streetwear brand on a mission to donate 100 million meals to Feeding America through its signature line of hoodies — 1 hoodie = 100 meals. A serial entrepreneur at heart, Chris has successfully launched and managed seven businesses so far, selling two in the process, including Gentleman’s Box. Chris is dedicated to sharing the lessons he learned in his career to empower and inspire others. He does both in his show ‘No Excuses with Chris G,’ which aims to help subscription business owners looking to launch, grow, and scale their businesses. Chris also inspires college students across the country by giving guest lectures on entrepreneurship and offering his mentorship to those who want it.

John Haji

John Haji is the Co-Founder of the Subscription Trade Association and the world’s largest direct-to-consumer subscription conference, SubSummit. His involvement in the subscription space dates back to 2014, when he launched – alongside Paul Chambers and Christopher George – the wildly popular subscription box Gentleman’s Box, which was acquired in 2020. As a 2019 Crain Detroit’s 40 under 40 recipient, John is determined to help every subscription business owner unlock their full potential. John is also a devoted father, husband, and mentor who works hard to continue to aspire and guide other young entrepreneurs on the right path to success.