Insider ownership of Celgene Corporation
A high value of insider ownership means that those working for the company have a large stake in the success of the company. This is sometimes seen as a sign that those running the company will work hard to ensure its success or believe the company's stock price will rise.
A change in insider ownership may come from exercise of option, stock grant and buying or selling of company shares. A purchase of company share signifies a confidence in the company's future performance by people who know the company best. Therefore, Net Insider buying is also an important indicator for investors.