Shares Ocean Rig UDW Inc. Common Stock ($0.01 Par Value) UNDERWRITING AGREEMENTUnderwriting Agreement • April 9th, 2012 • Ocean Rig UDW Inc. • Drilling oil & gas wells • New York
Ocean Rig UDW Inc., a Marshall Islands corporation (the “Company”) and DryShips Inc., a Marshall Islands corporation (the “Selling Shareholder”), confirm their respective agreements with you and each of the several underwriters named in Schedule I hereto (the “Underwriters”) for whom you are acting as representative (in such capacity, “you” or the “Representatives”), with respect to (i) the sale by the Selling Shareholder and the purchase by the Underwriters of an aggregate of shares (the “Firm Shares”) of the Company’s common stock, $0.01 par value per share (the “Common Stock”) and (ii) the grant by the Selling Shareholder to the Underwriters of the option, as described in Section 2(b) hereof, to purchase up to additional shares of the Company’s Common Stock (the “Option Shares”). The respective amounts of the Firm Shares to be so purchased by the several Underwriters are set forth opposite their names in Schedule I.
ADDENDUM No. 3 Dated April 2, 2012 to a Drillship Master Agreement dated November 22, 2010 as novated by a Novation Agreement dated December 30, 2010 and further as amended by an Addendum No. 1 dated May 16, 2011 and further as amended by an Addendum...Drillship Master Agreement • April 9th, 2012 • Ocean Rig UDW Inc. • Drilling oil & gas wells
