The company is not listed, and options are generally useful and can be bought. The value of the option still belongs to its holder, but the option cannot be traded on the stock exchange and other places like the shares of listed companies, nor can it be publicly traded and circulated.
Option refers to a contract, which originated in the American and European markets in the late18th century. This kind of contract gives the holder the right to buy or sell assets at a fixed price on or before a certain date.