UltraSignup
David Callahan is a seasoned professional with extensive experience in law and business leadership. Currently serving as Co-CEO of UltraSignup since September 2020 and Chief Strategy Officer at Atiba, which specializes in Managed Services and IT Consulting, David's entrepreneurial spirit is further reflected in their founding roles at Callahan Bewley & Chandra, PLLC and their tenure as Of Counsel at Goodman Callahan & Blackstone PLLC. David's legal expertise encompasses probate and estate litigation, tax law, and corporate governance, supported by a Master of Laws in Taxation from The University of Alabama School of Law and a Doctor of Jurisprudence from the Nashville School of Law.
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UltraSignup
UltraSignup is the leading marketplace and registration platform for trail and ultra races in the United States. Founded in 2008, runners can use UltraSignup.com to discover and choose from more than 5000 races. UltraSignup has now evolved to offer best in class original and aggregated content, podcasts, livestreams and live events to authentically connect the ever growing trail community and ensure our runners get to the start line happy, healthy and ready to race.