report something to someone
to present a body of information to someone. Please report the results to the supervisor. The event was reported to the proper person.
report to someone or something
1. to present oneself to someone or an office. You must report to me for duty at noon. They told me to report to this office at this time.
2. to be supervised by someone or an office. When you start work here, you will report to Mrs. Franklin. I report directly to the home office.
3. to return to someone or an office and make a report. Please report to me when you have the results. If you have any more to say, please report to headquarters and tell the whole story.