coinvestor
/ˌkoʊɪnˈvɛstər/
noun
- A person who invests money together with one or more other people in a business, project, or asset.
- The coinvestor reviewed the business plan before agreeing to fund the project.
- Each coinvestor contributed $10,000 to start the tech company.
- She became a coinvestor in the new restaurant with her brother.