Sentence examples for a shareholder from inspiring English sources

"a shareholder" is grammatically correct and can be used in written English.
It is a noun phrase that refers to someone who owns shares in a company. You can use it in a sentence to describe someone's ownership in a company, such as: John is a shareholder of the company, owning 20% of the shares. Here, "a shareholder of the company" is used to specify John's ownership in the company. It can also be used in a more general sense, such as: Becoming a shareholder in a successful company can be a profitable investment.