It's a mess. Seemed to be a good company with outstanding products, but as we see too often now a days they suffered from too much debt and careless management.
The best I can tell is that they have finally reached an agreement with creditors and have issued new FRN's in exchange for outstanding debt, Wells Fargo has taken over assets creating something called a DIP Facility (Debtor In Possession). If I read and understand correctly a complete restructuring of the company, new issue of stock, and new board members. Can't find anything definite about current equity-holders. But it don't look to good.
There are tons of articles and opinions if you google angiotech bankruptcy. Their website has links to A&M's website were they have a document history of petitions filed. Fortunately for me, I only have a small stake in the company, so I will hold on to see what comes of all this. It'll be a learning experience.