25.14.29
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GM
Gregory Mannering
2 Credentials
This is to certify that
Gregory Mannering
has successfully completed the
Executive Presence and Influence: Persuasive Leadership Development
in witness thereof this certificate is presented in
June 2025
Patti Williams,
Vice Dean, Aresty Institute of Executive Education The Wharton School, University of Pennsylvania
Executive Presence and Influence: Persuasive Leadership Development
July 5, 2025
Emeritus
This is to certify that
Gregory Mannering
has successfully completed the
Global Supply Chain Management Program
in witness thereof this certificate is presented in
May 2025
Patti Williams,
Vice Dean, Aresty Institute of Executive Education The Wharton School, University of Pennsylvania
Global Supply Chain Management Program
June 2, 2025
Emeritus
