As previously announced, Wendy’s (WEN) is filing for a $600M IPO of Canada’s beloved coffee and donut chain. The number of shares offered and the price range were not disclosed. The stock would be listed in both NYSE and TSE under the ticker symbol “THI”.

We do know that Wendy’s is planning to sell between 15%-18% of Tim Hortons in the IPO. It would mean that the value of the entire Tim Hortons stake is $3.3B-$4.0B (compared to the entire value of Wendy’s at $6B). Assuming revenues in the range of $1.5B in 2005, Tim’s would be valued between 2.2-2.6 times sales and very roughly 20 times trailing earnings. That sounds like a decent valuation and the IPO is likely to be in great demand here in Canada.