Astellas purchased OSI Pharmaceuticals for $4.0 billion May 16, 2010 http://www.astellas.us/docs/us/FINAL_PRESS_RELEASE_5_16_10.pdf?v=1 Under the terms of the merger agreement, As tellas will increase its offer price to $57.50 per share, which represents a premium of 55% to the closing price for OSI’s shares of $37.02 on February 26, 2010, the last trading day before the announcement by Astellas of its tender offer. The boards of directors of both companies have unanimously approved the combination. The all-cash transaction is va lued at $4.0 billion on a fully diluted basis. #### Astellas with cash on hand of Yen 396,430 x 1,000,000 based on their Mar 2015 financial statement can raise their bid considerably. http://www.astellas.com/en/ir/finance/data.html