Europe’s top PCO agency leaders.
Who is shaping the future of Europe’s congress industry?
Leadership backed by evidence.
Congress-led agencies professionally manage institutional congresses as a continuing core capability. Meetings Star assesses the named senior leader and the eligible agency unit they lead as one verified pair.
The agency oversees the congress as an institutional process involving delegates, programme, finances and stakeholders. The selection is based on evidence and editorial review, not a public vote.
50 criteria. 100 points.
Each category has eligibility and proof requirements. Full methodology details will accompany the ranking.
Top 50 agency leaders.
Follow the editorial reveal. Each verified profile will appear here with its rank, portrait, name, role, agency and country.
Eight PCO agency leaders are now featured below.

Sissi Lignou
President & CEO · AFEA Congress · Greece

Gema Rodriguez
Managing Director · TFI Lodestar · United Kingdom

André Vietor
Managing Director · BCO Congresos · Spain

Stefan Walter
Managing Director · Mondial Congress & Events · Austria

Natalie de Chalus
Founder & President · Colloquium · France

Mirjana Saletić
Founder & General Manager · Miross · Serbia

Alain Gargani
Founder · Atout Organisation Science (AOS) · France

Pepijn Klerkx
Partner & Managing Director · Congress Care · Netherlands
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Meet the leaders at Conventa.
Conventa connects agency leaders with destinations, venues and specialist suppliers through pre-scheduled meetings and curated networking.
Why these leaders?
PCO recognises leaders of agencies whose continuing core work is the professional management of institutional congresses. The assessment considers the accountable leader together with the agency’s proven ability to manage delegates, programmes, finances and stakeholders.
FAQ · How is the ranking assessed?
Meetings Star evaluates each eligible leader–agency pair against 50 evidence-based criteria worth 100 points: 60 for common leadership and agency standards and 40 for PCO-specific excellence. Category eligibility and supporting evidence are checked before a profile is included.
