Revenues from drilling contracts increased by $181.6 million to $441.4 million for the three-month period ended June 30, 2014, as compared to $259.8 million for the same period in 2013.

Drilling rigs and drillships’ operating expenses increased to $183.1 million and total depreciation and amortization increased to $81.4 million for the three-month period ended June 30, 2014, from $117.0 million and $55.6 million, respectively, for the three-month period ended June 30, 2013. Total general and administrative expenses increased to $28.0 million in the second quarter of 2014 from $23.5 million during the same period in 2013.

Interest and finance costs, net of interest income, amounted to $57.7 million for the three-month period ended June 30, 2014, compared to $30.4 million for the three-month period ended June 30, 2013.

⁽¹⁾ Adjusted EBITDA is a non-GAAP measure; please see later in this press release for reconciliation to net income.

Fleet List

The table below describes our fleet profile and drilling contract backlog as of July 31, 2014:

Drilling Rigs / Drillships:

Ocean Rig UDW Inc.

Financial Statements

Unaudited Condensed Consolidated Statements of Operations

Ocean Rig UDW Inc.

Unaudited Condensed Consolidated Balance Sheets

Adjusted EBITDA Reconciliation

Adjusted EBITDA represents earnings before interest, taxes, depreciation and amortization, class survey costs and gains or losses on interest rate swaps. Adjusted EBITDA does not represent and should not be considered as an alternative to net income or cash flow from operations, as determined by United States generally accepted accounting principles, or U.S. GAAP, and our calculation of adjusted EBITDA may not be comparable to that reported by other companies. Adjusted EBITDA is included herein because it is a basis upon which the Company measures its operations. Adjusted EBITDA is also used by our lenders as a measure of our compliance with certain covenants contained in our loan agreements and because the Company believes that it presents useful information to investors regarding a company's ability to service and/or incur indebtedness.

The following table reconciles net income to Adjusted EBITDA:

Drill Rigs Holdings Inc - Supplemental Information

Leiv Eiriksson

The Leiv Eiriksson is currently drilling offshore Norway under our three-year contract with Rig Management Norway. During the second quarter of 2014, the unit achieved utilization of 97.3%.  

Eirik Raude

The Eirik Raude is currently drilling offshore South Africa under our contract with Lukoil, which is expected to end in December of 2014. During the second quarter of 2014, the unit achieved utilization of 100%. Following the completion of the Lukoil contract, the Eirik Raude is scheduled to commence mobilization from West Africa to the Falkland Islands to commence a minimum six well contract with Premier Oil. The drilling unit is expected to commence drilling operation under our Premier Oil contract in the first quarter of 2015.

Summary Financials of Drill Rig Holdings Inc.:

EBITDA reconciliation of Drill Rig Holdings Inc.:

8

 Conference Call and Webcast: August 6, 2014

As announced, the Company’s management team will host a conference call, on Wednesday, August 6, 2014 at 8:00 a.m. Eastern Time to discuss the Company's financial results.

Conference Call Details

Participants should dial into the call 10 minutes before the scheduled time using the following numbers: 1(866) 819-7111 (from the US), 0(800) 953-0329 (from the UK) or +(44) (0) 1452 542 301 (from outside the US). Please quote "Ocean Rig"

A replay of the conference call will be available until August 13, 2014. The United States replay number is 1(866) 247-4222; from the UK 0(800) 953-1533; the standard international replay number is (+44) (0) 1452 550 000 and the access code required for the replay is: 55592075#.

A replay of the conference call will also be available on the Company’s website at www.ocean- rig.com under the Investor Relations section.

Slides and audio webcast:

There will also be a simultaneous live webcast over the Internet, through the Ocean Rig UDW Inc. website www.ocean-rig.com. Participants to the live webcast should register on the website approximately 10 minutes prior to the start of the webcast.

About Ocean Rig UDW Inc.

Ocean Rig is an international offshore drilling contractor providing oilfield services for offshore oil and gas exploration, development and production drilling, and specializing in the ultra-deepwater and harsh-environment segment of the offshore drilling industry. The company owns and operates 13 offshore ultra deepwater drilling units, comprising of 2 ultra deepwater semisubmersible drilling rigs and 11 ultra deepwater drillships, 1 of which is scheduled to be delivered to the Company during 2015, 1 of which is scheduled to be delivered to the Company during 2016 and 2 of which are scheduled to be delivered during 2017.

Ocean Rig’s common stock is listed on the NASDAQ Global Select Market where it trades under the symbol “ORIG”

Visit the Company’s website at www.ocean-rig.com

Forward-Looking Statement

Matters discussed in this release may constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. The Private Securities Litigation Reform Act of 1995 provides safe harbor protections for forward-looking statements in order to encourage companies to provide prospective information about their business. The Company desires to take advantage of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and is including this cautionary statement in connection with such safe harbor legislation.

Forward- looking statements relate to Ocean Rig’s expectations, beliefs, intentions or strategies regarding the future. These statements may be identified by the use of words like “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “plan,” “project,” “should,” “seek,” and similar expressions. Forward-looking statements reflect Ocean Rig’s current views and assumptions with respect to future events and are subject to risks and uncertainties.

The forward-looking statements in this release are based upon various assumptions, may of which are based, in turn, upon further assumptions, including without limitation, management’s examination of historical operating trends, data contained in Ocean Rig’s records and other data available from third parties. Although Ocean Rig believes that these assumptions were reasonable when made, because these assumptions are inherently subject to significant uncertainties and contingencies which are difficult or impossible to predict and are beyond Ocean Rig’s control, Ocean Rig cannot assure you that it will achieve or accomplish these expectations, beliefs or projections described in the forward- looking statements contained herein. Actual and future results and trends could differ materially from those set forth in such statements.

Important factors that, in Ocean Rig’s view, could cause actual results to differ materially from those discussed in the forward-looking statements include (i) factors related to the offshore drilling market, including supply and demand, utilization, day rates and customer drilling programs; (ii);hazards inherent in the drilling industry and marine operations causing personal injury or loss of life, severe damage to or destruction of property and equipment, pollution or environmental damage, claims by third parties or customers and suspension of operations; (iii) changes in laws and governmental regulations, particularly with respect to environmental matters; (iv) the availability of competing offshore drilling vessels; (v) political and other uncertainties, including risks of terrorist acts, war and civil disturbances; piracy; significant governmental influence over many aspects of local economies, seizure; nationalization or expropriation of property or equipment; repudiation, nullification, modification or renegotiation of contracts; limitations on insurance coverage, such as war risk coverage, in certain areas; political unrest; foreign and U.S. monetary policy and foreign currency fluctuations and devaluations; the inability to repatriate income or capital; complications associated with repairing and replacing equipment in remote locations; import-export quotas, wage and price controls imposition of trade barriers; regulatory or financial requirements to comply with foreign bureaucratic actions; changing taxation policies; and other forms of government regulation and economic conditions that are beyond our control; (vi) the performance of our rigs; (vii) our ability to procure or have access to financing and comply with our loan covenants; (viii) our ability to successfully employ our drilling units; (ix) our capital expenditures, including the timing and cost of completion of capital projects; and (x) our revenues and expenses. Due to such uncertainties and risks, investors are cautioned not to place undue reliance upon such forward-looking statements.

Risks and uncertainties are further described in reports filed by Ocean Rig UDW Inc. with the U.S. Securities and Exchange Commission, including the Company’s most recently filed Annual Report on Form 20-F.

Investor Relations / Media:

Nicolas Bornozis

Capital Link, Inc. (New York) Tel. 212-661-7566

E-mail: oceanrig@capitallink.com