RE: RE: SEC filing From Investopedia:
"Due to its proximity to the U.S. and the number of companies operating on both sides of the border, many Canadian companies want to make their securities available to U.S. investors. SEC Form 40-F is used to register Canadian securities in the U.S. and can provide valuable insight into Canadian companies. After the initial filing, SEC Form 40-F is also used by Canadian companies to provide their annual report."
Note: This was an ammendment to the original Form 40-F filled out by Wi-lan