What is the worst-case scenario when an individual who owns the shares of a business corporation is

Question:

What is the worst-case scenario when an individual who owns the shares of a business is considering the sale of that business? How is that individual’s tax position affected if the business for sale is held within a that is a subsidiary of a large public Corporation
A Corporation is a legal form of business that is separate from its owner. In other words, a corporation is a business or organization formed by a group of people, and its right and liabilities separate from those of the individuals involved. It may...