Can a company block a specific person from buying its stock?
The company could use registered shares with restricted transferability, i.e. shares that require the consent of the issuing company for a change of ownership.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Can a company block a specific person from buying its stock?

### Response:
The company could use registered shares with restricted transferability, i.e. shares that require the consent of the issuing company for a change of ownership.