UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13A-16 OR 15D-16 OF THE SECURITIES EXCHANGE ACT OF 1934
For the month of April 2018
Commission File Number 001-35298
OCEAN RIG UDW INC.
Ocean Rig Cayman Management Services SEZC Limited
3rd Floor Flagship Building
Harbour Drive, Grand Cayman, Cayman Islands
(Address of principal executive offices)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F [X] Form 40-F [ ]
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): [ ].
Note
: Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): [ ].
Note
: Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant's "home country"), or under the rules of the home country exchange on which the registrant's securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant's security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.
INFORMATION CONTAINED IN THIS FORM 6-K REPORT
Attached to this Report on Form 6-K as Exhibit 99.1 is a copy of the press release of Ocean Rig UDW Inc., dated April 16, 2018: Ocean Rig UDW Inc. Announces Authorization of an up to $150 Million Stock Repurchase Plan.
The information contained in this Report on Form 6-K is hereby incorporated by reference into the Company's registration statement on Form F-3 (File no. 333- 223758) that was filed with the U.S. Securities and Exchange Commission effective March 19, 2018.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
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OCEAN RIG UDW INC.
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Dated: April 16, 2018
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By:
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/s/ Iraklis Sbarounis
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Iraklis Sbarounis
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Chief Financial Officer
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