Do I have to file a Schedule 13D or 13G (Form SC 13D/SC 13G)? When am I required to file a Schedule 13G? The rules and regulations governing beneficial ownership of securities are covered in Rule 13d-1 — Filing of Schedules 13D-G. You can also find information about filing deadlines and requirements for both the SC 13D and SC 13G here. A passive individual investor can file an initial SC 13G within 10 days of acquiring 5% ownership, and must file annually within 45 days of the end of the calendar year to report any changes in ownership. If the change in ownership exceeds 10% or changes by more than 5% then an amended 13G is required within 10 days. Also see this release by the SEC spelling it out.