Pfizer Inc. (PFE) recently announced that it has extended the expiration date of its tender offer for all outstanding shares of King Pharmaceuticals, Inc. (KG) by 7 days. The tender offer is now set to expire on January 28, 2011. As of January 20, 2011, about 46.6% of King Pharma’s outstanding shares were validly tendered. [...] (PFE) Pfizer Extends King Pharmaceuticals Stock Tender Offer