A statement of beneficial ownership of common stock by certain persons

Report of unscheduled material events or corporate event

Form of prospectus reflecting facts events constituting substantive change from last form

Form of prospectus disclosing information, facts, events covered in both forms 424B2, 424B3

Pre-effective amendment to an S-3 filing

Pre-effective amendment to an S-3 filing

Quarterly report which provides a continuing view of a company's financial position

Registration of certain classes of securities 12(b) of the Securities Exchange Act

Simplified registration form

Registration of certain classes of securities 12(b) of the Securities Exchange Act