25.9.12
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William Callahan
1 Credential
Columbia Business School Executive Education
hereby recognizes that
William Callahan
has participated in:
April 2023
Costis Maglaras
Dean and David and Lyn Silfen Professor of Business
VC Decision Making (Online): Developing an Investment Thesis
VC Decision Making (Online): Developing an Investment Thesis
June 14, 2023
Emeritus
2 more credentials
1 more issuer
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