The video game maker set to be sold to Microsoft said in a legal filing on Friday that it would cooperate with an investigation into whether some of the company's investors engaged in insider trading before the deal was announced.

The company said it had received a request for information from the Securities and Exchange Commission and a subpoena from the Justice Department. The requests appeared to relate to investigations into whether investors who knew Bobby Kotick, the chief executive of Activision, engaged in insider trading before the Microsoft deal was made public.

The company said in the filing that it intends to be fully cooperative with the investigations.

The Wall Street Journal reported in March that three investors were able to make $60 million in gains after the company's stock price jumped. The Journal reported that one of them met with Mr. Kotick a week before buying the stock. The investors were not named in the filing.

The S.E.C. did not respond to requests for comment. The gaming company, which produces titles like Call of Duty and Candy Crush, has been under fire since last summer, when a California employment agency sued it on allegations that it had a toxic, sexist workplace culture.