Alexandria Real Estate Equities Reports Exercise of Over-Allotment Option by Underwriters (ARE)

Alexandria Real Estate Equities, Inc. ARE announced today that the underwriters of its recent public offering of 5,500,000 shares of common stock have partially exercised their over-allotment option to purchase an additional 750,651 shares of common stock, bringing the total net proceeds to approximately $452 million, after payment of underwriting discounts and commissions.  Under the terms of the offering, Alexandria Real Estate Equities, Inc. had granted the underwriters a thirty-day option to purchase up to 825,000 additional shares to cover over-allotments, if any.  The closing of the over-allotment option is expected to occur on May 11, 2011.