MADISON, Wis.--(BUSINESS WIRE)--Exact Sciences Corp. (Nasdaq: EXAS) announced today that it priced an underwritten public offering of 4,200,000 shares of common stock at a price of $4.50 per share to the public. The company has granted the underwriter in the offering an option to purchase up to 630,000 additional shares of common stock at the same price per share to cover any over-allotments. The number of shares in the offering represents an increase of 20%, or an additional 700,000 shares, from the previously announced offering size of 3,500,000 shares of common stock, and the number of shares in the underwriter’s over-allotment option was likewise increased by 20% from the previously announced number. The public offering of the shares is expected to close on April 19, 2010.