Our Founder.
Mark Callender, Managing Director
An events leader with over 16 years’ experience designing high-impact, experience-led B2B events for some of the world’s most influential technology and business communities.
Mark has held leadership roles across globally recognised platforms including Money20/20 and Mobile World Congress, where he worked with C-suite leaders, governments, scale-ups and global brands to turn content, conversation and experience into commercial outcomes.
OTR Events was created to solve a simple problem: senior leaders don’t need more events — they need better engagement.
Mark’s focus is on creating trusted, closed-door environments where the right people can engage openly, challenge assumptions, and move from discussion to decision.