3/2/2010-Astellas Pharma said Tuesday that it has filed a lawsuit to prevent OSI Pharmaceuticals (NASDAQ:OSIP) and its directors from taking actions to block Astellas’s unsolicited tender offer for all of OSI’s outstanding shares.
Astellas also seeks to prevent OSI from enacting its “poison pill” shareholder rights plan, which would also impede a takeover.
The tender offer of $52 per share in cash commenced early today.
Shares of OSI Pharmaceuticals are trading 0.4% higher to $56.46.
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