WALTHAM, Mass.--(BUSINESS WIRE)--ImmunoGen, Inc. (Nasdaq: IMGN), a biopharmaceutical company that develops targeted anticancer therapeutics, announced today that it has priced a public offering of 5,000,000 shares of its common stock at a price of $7.00 per share. Net proceeds, after underwriting discounts and commissions and expenses, will be approximately $33 million. ImmunoGen has granted the underwriters a thirty (30) day option to purchase up to an additional 750,000 shares to cover over-allotments, if any. The offering is expected to close on or about June 23, 2009, subject to satisfaction of customary closing conditions.
