• Technical Conference: 

    09 – 14 May 2021

  • Exhibition: 

    09 – 14 May 2021


Request CLEO Notifications

Get notified when 2021 Registration opens in March.

Important Information

Policies and Terms of Registration

Reasonable policies and terms of registration have been established for CLEO. We encourage you to read these carefully as all registrants to CLEO will be required to agree to these policies and terms as a condition of registration.

Privacy Policy

CLEO and its co-sponsors respect the privacy rights of our online participants and recognize the importance of protecting all information that you may choose to share with us. To further this commitment, we have adopted this Privacy Policy to guide how we collect, store, and use the information you provide to us.


Customer Service


For questions regarding registration, please contact the CLEO Registration Customer Service via phone or email.
Phone: + 1.224.563.3173
email: cleo@csreg.zohodesk.com
Customer Service hours are from 09:00 - 17:00 CST.

Code of Conduct

It is important to the success of this meeting that every participant be treated with consideration and respect. Following is a summary of CLEO’s Code of Conduct and Anti-Harassment policy. The entire policy can be viewed here.

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