Global business events industry consulting firm, GainingEdge has announced that Thomas Reiser will join the company as Partner, effective 15 May, 2026.
Reiser brings more than 25 years of international leadership experience in association management and business events. He has successfully guided several international associations through strategic growth, organisational development and long-term impact.
Most recently, Reiser served as executive director of the International Society on Thrombosis and Haemostasis (ISTH), where he led a period of significant expansion, growing the organisation’s global reach, membership, and financial performance while overseeing major international congresses. Prior to this, he held leadership roles with organisations such as Smith Bucklin, MCI Group, Interel Association Management, and several international medical societies.
GainingEdge CEO, Steen Jakobsen, said: “Tom is one of the most respected and accomplished leaders in the international association community. He brings an exceptional combination of strategic vision and operational expertise. His experience in building, growing and transforming organisations, combined with his strong global network, will significantly enhance our ability to support clients across the association and business events landscape.
“Importantly, Tom will strengthen and expand our service portfolio towards international associations, particularly in the area of strategic meetings management, including destination and venue selection. At the same time, he will play a key role in enhancing how we support destinations and venues in better understanding, responding to, targeting and growing their share of the global association meetings market. This is a significant opportunity area, and Tom’s expertise positions us strongly to capture it.”
Reiser said: “Joining as Partner presents an exciting opportunity to contribute to the firm’s continued evolution and to help shape its next phase of growth.”
Reiser will join the GainingEdge team at IMEX Frankfurt 2026.
