VENLO, The Netherlands, Sept. 29, 2009 (GLOBE NEWSWIRE) -- QIAGEN N.V. (Nasdaq:QGEN) (Frankfurt:QIA) (the “Company”) announces that the underwriters for its offering of 27.5 million newly issued common shares (the “Offering”) have exercised in full their over-allotment option to purchase 4,125,000 common shares (the “Additional Shares” and, together with the 27.5 million common shares, the “Shares”), and the Company will issue the Additional Shares at the price for the Offering, as previously announced, of US$20.25 per share (EUR 13.82).