共きょう同どう創そう設せつ者しゃ

noun

co-founder

A person who jointly establishes an organization, company, or movement with others.

• 彼かれはその会かい社しゃの共きょう同どう創そう設せつ者しゃの一人ひとりです。

  He is one of the co-founders of the company.