An amendment to the SC 13G filing

A statement of beneficial ownership of common stock by certain persons

Simplified registration form

A statement of beneficial ownership of common stock by certain persons

A statement of beneficial ownership of common stock by certain persons

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

Pre-effective amendment to an S-3 filing

Pre-effective amendment to an S-3 filing

Form of prospectus that discloses information previously omitted from the prospectus

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