acca考试的 profession ethics module 里的问题

acca考试的 profession ethics module 里的问题
You know someone who is a company accountant employed by a listed company on your national stock exchange on the 100 index. At a social occasion they mention to you privately that following a board meeting their company’s directors have decided to acquire a supplier company which is currently listed on the larger 250 stock index. What should you do?