25.14.29
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WM
WITZEL MARDI
2 Credentials
Columbia Business School Executive Education
hereby recognizes that
Mardi Witzel
has participated in:
Finance and Accounting for the Nonfinancial Professional (Online)
June 2023
Costis Maglaras
Dean and David and Lyn Silfen Professor of Business
Finance and Accounting for the Nonfinancial Professional (Online)
June 12, 2023
Emeritus
THIS IS TO CERTIFY THAT
MARDI WITZEL
HAS ATTENDED AND SUCCESSFULLY COMPLETED
DIGITAL MARKETING: CUSTOMER ENGAGEMENT, SOCIAL MEDIA, PLANNING & ANALYTICS
MAY 2021
Bob Halperin
Pierre Yared
Academic Director EMERITUS
Vice Dean, Executive Education Columbia Business School
DIGITAL MARKETING: CUSTOMER ENGAGEMENT, SOCIAL MEDIA, PLANNING & ANALYTICS
June 3, 2021
Emeritus
