Bret Griess

Executive Partner

Siris Capital Group

Office Phone:

(212) 231-0095


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Bio

Mr. Bret Griess (Executive Partner) was most recently President and Chief Executive Officer of CSG Systems International, a global leader in revenue management and cloud payments solutions. He was with CSG for nearly 25 years, holding a variety of positions in Operations and Information Technology. Mr. Griess oversaw the development of CSG’s first comprehensive cybersecurity program, introduced the industry’s first public, cloud-based business support solution and led the company through its largest acquisition and contracts, valued at more than $2 billion. Mr. Griess is currently a member of the Board of Directors at Nebraska Methodist Health System and Midland University. He holds a Master of Arts in Management and Bachelor of Science from Bellevue University, along with an Associate of Applied Science from the Community College of the Air Force. Mr. Griess previously served as a member of the Board of Directors of the Student Loan Finance Corporation and CSG Systems International, and is currently a member of the Board of Directors of Equiniti.

Education