16. February 2026

Registration open: 6th International Collective Action Conference

Collective Action Conference 2026 image

The only international anti-corruption Collective Action Conference is back!

Are you working on corruption prevention in the private sector, government, civil society or academia?

Then join us for the sixth edition of this biannual landmark event on 9–10 June in Basel, Switzerland.

Over one and a half days of expert sessions, fireside chats and networking, we’ll bring together practitioners from around the world to build and strengthen communities of practice in Collective Action.

This edition will focus on concrete measures to make markets fairer and more transparent – with a strong hands-on approach:

  • What does Collective Action look like in practice, and what makes it work?
  • How can a multi-stakeholder approach help organisations respond more effectively to global business challenges?

The 6th International Collective Action Conference is supported by the Siemens Integrity Initiative. Participation is free of charge, but places are limited and subject to approval. 

Learn more on the official event page on the B20 Collective Action Hub and submit your registration request here.

Sponsorship opportunities

We are seeking a limited number of sponsors to support the conference and help advance practical, multi-stakeholder approaches to business integrity and anti-corruption. See more information on sponsorship options and benefits and don't hesitate to get in touch.