Dear Valued Visitor,

We have noticed that you are using an ad blocker software.

Although advertisements on the web pages may degrade your experience, our business certainly depends on them and we can only keep providing you high-quality research based articles as long as we can display ads on our pages.

To view this article, you can disable your ad blocker and refresh this page or simply login.

We only allow registered users to use ad blockers. You can sign up for free by clicking here or you can login if you are already a member.

13D Filing: Blue Mountain Capital and Ocean Rig UDW Inc.

Ocean Rig UDW Inc.: Andrew Feldstein And Stephen Siderow’s Blue Mountain Capital filed an amended 13D.

You can check out Blue Mountain Capital’s latest holdings and filings here.

Please follow Blue Mountain Capital (if you aren’t already doing so) to get real-time email alerts whenever we publish an article about Blue Mountain Capital or update its stock holdings.

Andrew Feldstein And Stephen Siderow
Andrew Feldstein And Stephen Siderow
Blue Mountain Capital

You can access the original SEC filing by clicking here.

Ownership Summary Table

Name Sole Voting Power Shared Voting Power Sole Dispositive Power Shared Dispositive Power Aggregate Amount Owned Power Percent of Class
BlueMountain Capital Management 0 9,846,060 0 9,846,060 9,846,060 10.9%
BlueMountain GP Holdings 0 7,272,878 0 7,272,878 7,272,878 8.0%
BlueMountain Credit GP 0 4,546,482 0 4,546,482 4,546,482 5.0%
Blue Mountain CA Master Fund GP, Ltd 0 4,546,482 0 4,546,482 4,546,482 5.0%
Blue Mountain Credit Alternatives Master Fund 0 4,546,482 0 4,546,482 4,546,482 5.0%
BlueMountain Foinaven GP 0 682,878 0 682,878 682,878 0.8%
BlueMountain Foinaven Master Fund 0 682,878 0 682,878 682,878 0.8%
BlueMountain Long Short Credit GP 0 338,370 0 338,370 338,370 0.4%
BlueMountain Guadalupe Peak Fund 0 338,370 0 338,370 338,370 0.4%
BlueMountain Montenvers GP S. r.l 0 1,090,501 0 1,090,501 1,090,501 1.2%
BlueMountain Montenvers Master Fund SCA SICAV-SIF 0 1,090,501 0 1,090,501 1,090,501 1.2%
BlueMountain Summit Opportunities GP II 0 1,449,360 0 1,449,360 1,449,360 1.6%
BlueMountain Summit Trading 0 1,449,360 0 1,449,360 1,449,360 1.6%
BlueMountain Kicking Horse Fund GP 0 255,788 0 255,788 255,788 0.3%
BlueMountain Kicking Horse Fund 0 255,788 0 255,788 255,788 0.3%
BlueMountain Timberline Ltd 0 630,047 0 630,047 630,047 0.7%
Andrew Feldstein And Stephen Siderow
Andrew Feldstein And Stephen Siderow
Blue Mountain Capital

Page 1 of 24 – SEC Filing

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

 

 

SCHEDULE 13D

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. )*

 

 

OCEAN RIG UDW
INC.

(Name of Issuer)

Common Stock, par value $0.01 per share

(Title of Class of Securities)

G66964118

(CUSIP Number)

Eric M. Albert

BlueMountain Capital Management, LLC

280 Park Avenue, 12th Floor

New York, New York 10017

212-905-5647

(Name,
Address and Telephone Number of Person Authorized to Receive Notices and Communications)

September 22, 2017

(Date of Event which Requires Filing of this Statement)

 

 

If the filing person has
previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following
box.  ☐

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7
for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting persons initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information
which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
deemed to be filed for the purpose of Section 18 of the Securities Exchange Act of 1934 (Act) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the
Act (however, see the Notes).

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 2 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Capital Management, LLC

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Delaware, United States of America

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

9,846,060

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

9,846,060

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

9,846,060

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

10.9% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

IA

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock (as defined in Item 1) of the Issuer (as defined in Item 1) outstanding as of September 22, 2017, as
confirmed to the Reporting Persons (as defined in Item 2) by the Issuer on September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 3 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain GP Holdings, LLC

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Delaware, United States of America

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

7,272,878

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

7,272,878

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

7,272,878

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

8.0% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

OO

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 4 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Credit GP, LLC

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Delaware, United States of America

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

4,546,482

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

4,546,482

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

4,546,482

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

5.0% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

OO

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 5 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

Blue Mountain CA Master Fund GP, Ltd.

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Cayman Islands

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

4,546,482

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

4,546,482

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

4,546,482

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

5.0% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

CO

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 6 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

Blue Mountain Credit Alternatives Master Fund L.P.

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Cayman Islands

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

4,546,482

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

4,546,482

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

4,546,482

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

5.0% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

PN

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 7 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Foinaven GP, LLC

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Delaware, United States of America

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

682,878

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

682,878

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

682,878

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

0.8% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

OO

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 8 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Foinaven Master Fund L.P.

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Cayman Islands

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

682,878

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

682,878

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

682,878

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

0.8% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

PN

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 9 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Long/Short Credit GP, LLC

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Delaware, United States of America

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

338,370

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

338,370

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

338,370

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

0.4% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

OO

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 10 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Guadalupe Peak Fund L.P.

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Delaware, United States of America

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

338,370

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

338,370

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

338,370

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

0.4% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

PN

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 11 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Montenvers GP S.à r.l.

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Luxembourg

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

1,090,501

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

1,090,501

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,090,501

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

1.2% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

CO

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 12 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Montenvers Master Fund SCA SICAV-SIF

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Luxembourg

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

1,090,501

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

1,090,501

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,090,501

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

1.2% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

PN

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 13 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Summit Opportunities GP II, LLC

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Delaware, United States of America

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

1,449,360

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

1,449,360

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,449,360

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

1.6% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

OO

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 14 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Summit Trading L.P.

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Delaware, United States of America

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

1,449,360

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

1,449,360

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,449,360

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

1.6% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

PN

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 15 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Kicking Horse Fund GP, LLC

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Delaware, United States of America

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

255,788

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

255,788

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

255,788

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

0.3% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

OO

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 16 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Kicking Horse Fund L.P.

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Cayman Islands

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

255,788

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

255,788

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

255,788

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

0.3% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

PN

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 17 of 24 – SEC Filing


CUSIP No. G66964118

  1

NAMES OF
REPORTING PERSONS

BlueMountain Timberline Ltd.

  2

CHECK THE APPROPRIATE BOX IF A MEMBER
OF A GROUP (See instructions)

(a)  ☒        (b)  ☐

  3

SEC USE ONLY

  4

SOURCE OF FUNDS (See
instructions)

SC

  5

CHECK IF DISCLOSURE OF LEGAL
PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)

  6

CITIZENSHIP OR PLACE OF
ORGANIZATION

Cayman Islands

NUMBER OF

SHARES

 BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

   7

SOLE VOTING POWER

0

   8

SHARED VOTING POWER

630,047

   9

SOLE DISPOSITIVE POWER

0

 10

SHARED DISPOSITIVE POWER

630,047

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

630,047

12

CHECK IF THE AGGREGATE AMOUNT IN ROW
(11) EXCLUDES CERTAIN SHARES (see instructions)

13

PERCENT OF CLASS REPRESENTED BY AMOUNT
IN ROW (11)

0.7% (1)

14

TYPE OF REPORTING PERSON (See
instructions)

CO

(1) The percentage set forth in Row 13 of this Cover Page is based on the 90,660,769 shares of Common Stock of the Issuer outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on
September 22, 2017.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 18 of 24 – SEC Filing


CUSIP No. G66964118

Item 1. Security of the Issuer.

This Schedule 13D
relates to the shares of Common Stock, par value $0.01 per share (the Common Stock), of Ocean Rig UDW Inc., a Cayman Islands corporation (the Issuer). The Issuers principal executive office is located at
c/o Ocean Rig Cayman Management Services SEZC Limited, 3rd Floor Flagship Building, Harbour Drive, Grand Cayman, Cayman Islands.

Item 2. Identity and Background.

(a-c) This
Statement is being filed by the following beneficial owners of Common Stock (each, a Reporting Person):

(i) Blue Mountain Credit Alternatives Master Fund L.P., a Cayman Islands exempted limited partnership (BMCA), with respect to the Common Stock directly owned by it;
(ii) Blue Mountain CA Master Fund GP, Ltd., a Cayman Islands exempted limited company (BMCA GP), with respect to the Common Stock directly owned by BMCA;
(iii) Blue Mountain Credit GP, LLC, a Delaware limited liability company (BMC GP), which serves as the sole owner of BMCA GP, with respect to the Common Stock directly owned by BMCA;
(iv) BlueMountain Foinaven Master Fund L.P., a Cayman Islands exempted limited partnership (BMF), with respect to the Common Stock directly owned by it;
(v) BlueMountain Foinaven GP, LLC, a Delaware limited liability company (BMF GP), with respect to the Common Stock directly owned by BMF;
(vi) BlueMountain Guadalupe Peak Fund L.P., a Delaware limited partnership (BMGP), with respect to the Common Stock directly owned by it;
(vii) BlueMountain Long/Short Credit GP, LLC, a Delaware limited liability company (BMGP GP), with respect to the Common Stock directly owned by BMGP;
(viii) BlueMountain Montenvers Master Fund SCA SICAV-SIF, an investment company with variable share capital organized as a specialized investment fund in the form of a corporate partnership limited by shares under the laws of
Luxembourg (BMM), with respect to the Common Stock directly owned by it;
(ix) BlueMountain Montenvers GP S.à r.l., a private limited company incorporated under the laws of Luxembourg (BMM GP), with respect to the Common Stock directly owned by BMM;
(x) BlueMountain Summit Trading L.P., a Delaware limited partnership (BMST), with respect to the Common Stock directly owned by it;
(xi) BlueMountain Summit Opportunities GP II, LLC, a Delaware limited liability company (BMST GP), with respect to the Common Stock directly owned by BMST;
(xii) BlueMountain Kicking Horse Fund L.P., a Cayman Islands limited partnership (BMKH), with respect to the Common Stock directly owned by it;
(xiii) BlueMountain Kicking Horse Fund GP, LLC, a Delaware limited liability company (BMKH GP and, together with BMC GP, BMF GP, BMGP GP and BMST GP, the General Partners), with respect to
the Common Stock directly owned by BMKH;
(xiv) BlueMountain Timberline Ltd., a Cayman Islands exempted limited company (BMT and, together with BMCA, BMF, BMGP, BMM, BMST and BMKH, the BlueMountain Funds), with respect to the
Common Stock directly owned by it;
(xv) BlueMountain GP Holdings, LLC, a Delaware limited liability company (GP Holdings), which serves as the sole owner of each of the General Partners, with respect to the Common Stock directly owned by
each of BMCA, BMF, BMGP, BMST and BMKH; and
(xvi) BlueMountain Capital Management, LLC, a Delaware limited liability company (BMCM or the Investment Manager), which serves as the sole owner of BMM GP and investment manager to, and
makes investment decisions on behalf of, the BlueMountain Funds, with respect to the Common Stock directly owned by the BlueMountain Funds and BMCM.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 19 of 24 – SEC Filing


CUSIP No. G66964118

The principal business of: (i) each of the BlueMountain Funds is to serve as a private investment fund; (ii) each of BMCA GP, BMF GP, BMGP GP, BMM
GP, BMST GP and BMKH GP is to serve as the general partner of BMCA, BMF, BMGP, BMM, BMST and BMKH, respectively; (iii) BMC GP is to serve as the sole owner of BMCA GP; (iv) GP Holdings is to serve as the sole owner of each of the General
Partners; and (v) the Investment Manager is to serve as the sole owner of BMM GP and to serve as investment manager to, and to make investment decisions on behalf of, the BlueMountain Funds.

The executive officers, directors and control persons of the Reporting Persons are as follows:

Andrew Feldstein Chief Executive Officer and Co-Chief Investment Officer of the Investment Manager; Chief Executive Officer and Co-Chief Investment Officer of GP Holdings; Director of BMCA GP; Manager of BMC GP; Manager of BMST GP; Manager of BMGP
GP; Manager of BMKH GP; Director of BMT
Michael Liberman Chief Operating Officer of the Investment Manager; Chief Operating Officer of GP Holdings
Stephen Siderow President of the Investment Manager; President of GP Holdings
Derek Smith Co-Chief Investment Officer of the Investment Manager; Co-Chief Investment Officer of GP Holdings
Nathaniel Dalton Director of BMCA GP; Manager of BMC GP
Paul Friedman Manager of BMM GP
Alan Gerstein Manager of BMF GP; Manager of BMGP GP; Manager of BMST GP; Manager of BMKH GP; Manager of BMM GP; Director of BMT
Elizabeth Gile Director of BMCA GP; Manager of BMC GP; Manager of BMGP GP; Manager of BMST GP; Manager of BMKH GP
Todd Groome Manager of BMM GP
Gary Linford Director of BMCA GP; Manager of BMC GP; Manager of BMGP GP; Manager of BMF GP; Manager of BMST GP; Manager of BMKH GP
William Reeves Director of BMCA GP; Manager of BMC GP
Mark Shapiro Director of BMCA GP; Manager of BMC GP; Manager of BMGP GP; Manager of BMF GP; Manager of BMM GP; Manager of BMST GP; Manager of BMKH GP; Director of BMT
Elli Stevens Manager of BMM GP

The business address of BMCA, BMCA GP, BMF, BMKH and BMT is c/o Maples Corporate Services Limited, P.O. Box 309, Ugland House,
Grand Cayman, KY1-1104, Cayman Islands. The business address of BMGP, BMST, each General Partner, GP Holdings, the Investment Manager, Mr. Feldstein, Mr. Liberman, Mr. Siderow, Mr. Smith, Mr. Dalton, Mr. Friedman,
Mr. Gerstein, Ms. Gile, Mr. Reeves and Mr. Shapiro is 280 Park Avenue, 12th Floor, New York, New York 10017. The business address of Mr. Groome and Mr. Linford is c/o HighWater, Pavilion Commercial Centre, 1st Floor,
802 West Bay Road, P.O. Box 30599, KY1-1203, Grand Cayman, Cayman Islands. The business address of each of BMM, BMM GP and Ms. Stevens is 6D, Route de Treves, L-2633 Seningerberg, Luxembourg B176.316.

(d) None of the Reporting Persons or any of their respective executive officers, directors or control persons has, during the last five years, been convicted
in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e) None of the Reporting Persons or any of their respective executive
officers, directors or control persons has, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and, as a result of such proceeding, was or is subject to a judgment, decree or
final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 20 of 24 – SEC Filing


CUSIP No. G66964118

(f) Mr. Feldstein, Mr. Liberman, Mr. Siderow, Mr. Smith, Mr. Dalton, Mr. Friedman, Mr. Gerstein, Ms. Gile,
Mr. Groome, Mr. Reeves and Mr. Shapiro are U.S. citizens. Mr. Linford is a South African citizen. Ms. Stevens is a British citizen.

Item 3. Source and Amount of Funds or Other Consideration

BMCM and the BlueMountain Funds were issued 9,846,060 shares of Common Stock by the Issuer on the Restructuring Effective Date (as defined in Item 4). The
information set forth in Item 4 of this Schedule 13D is hereby incorporated herein by reference.

Item 4. Purpose of Transaction.

(1) During the second quarter of 2016, the board of directors of the Issuer (the Board) and a number of creditors formed the conclusion
that the Issuers debt obligations would need to be amended or exchanged for new debt and/or equity securities; (2) on August 11, 2016, the Issuer made a public announcement stating that it was exploring restructuring options; and
(3) on March 23, 2017, a Restructuring Agreement (the Restructuring Agreement) was executed between the Issuer and certain of its creditors to implement schemes of arrangement under the Companies Law of the Cayman
Islands (the Schemes) and to appoint joint provisional liquidators, as part of the proposed restructuring.

The Schemes were sanctioned
and confirmed by the Grand Court of the Cayman Islands on September 15, 2017 (Cayman Islands time). All of the conditions of the Schemes having been fulfilled, the Schemes became effective on September 22, 2017 (Cayman Islands time) (the
Restructuring Effective Date).

Pursuant to the Schemes, and subject to the conditions described therein, BMCM and the BlueMountain
Funds acquired beneficial ownership of 9,846,060 shares of Common Stock. Following consummation of the Schemes, the Issuer intends to conduct an extraordinary general meeting to adopt an amended and restated memorandum and articles of association
to, among other things, increase the number of directors serving on its Board to seven. Pursuant to these amended articles of association: (i) if there are three or fewer holders, together with each of their affiliates, each with at least 7.5%
of the outstanding shares of Common Stock, then each will be entitled to appoint a director to the Board; and (ii) if there are more than three holders, together with each of their affiliates, each with at least 7.5% of the outstanding shares
of Common Stock, then three persons entitled to appoint a director to the Board shall be designated by the majority vote of the shares of all the 7.5% holders. If any holder, together with its affiliates, holds 17% or more of the outstanding shares
of Common Stock, such holder shall automatically be one of such three persons entitled to appoint a director to the Board.

The summary of the
Restructuring Agreement and the Schemes set forth above does not purport to be complete and is qualified in its entirety by reference to the text of the Restructuring Agreement, the press release of the Issuer dated July 21, 2017 and the press
release of the Issuer dated September 22, 2017, copies of which are being filed as Exhibits 2, 3 and 4, respectively, and are incorporated herein by reference.

The Reporting Persons acquired the Common Stock for investment purposes. The Reporting Persons acquired the Common Stock over which they exercise beneficial
ownership in the belief that the Common Stock represents an attractive investment opportunity. The Reporting Persons intend to review their investment in the Issuer on a continuing basis. Representatives of the Reporting Persons may have
discussions from time to time with the Issuer, other stockholders and third parties relating to the Issuer, strategic alternatives that may be available to the Issuer and the Issuers business, operations, assets, capitalization, financial
condition, governance, management and future plans, including in respect of one or more of the actions described in subsections (a) through (j) of Item 4 of Schedule 13D. There can be no assurance as to the outcome of any of the
discussions referred to in this Schedule 13D.

Depending on various factors, including the Issuers financial position and strategic direction, the
outcome of the discussions referenced above, actions taken by the Board, price levels of the securities of the Issuer, other investment opportunities available to the Reporting Persons, the availability and cost of debt financing, the availability
of potential business combination and other strategic transactions, conditions in the capital markets and general economic and industry conditions, the Reporting Persons may in the future take such actions with respect to their investments in the
Issuer as they deem appropriate, including acquiring or disposing of securities of the Issuer, entering into financial instruments or other agreements which increase or decrease the Reporting Persons economic exposure with respect to their
investments in the Issuer, engaging in any hedging or similar transactions with respect to such holdings and/or otherwise changing their intention with respect to any and all matters referred to in Item 4 of Schedule 13D.

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 21 of 24 – SEC Filing


CUSIP No. G66964118

Item 5. Interest in Securities of the Issuer.

(a-b)
All percentages set forth in this Schedule 13D are based on the Issuers 90,660,769 shares of Common Stock outstanding as of September 22, 2017, as confirmed to the Reporting Persons by the Issuer on September 22, 2017. The
information set forth in Rows 7-13 of each Cover Page of this Schedule 13D is hereby incorporated herein by reference.

The General Partners, BMCA
GP, BMM GP and GP Holdings expressly declare that this filing shall not be construed as an admission that each is, for the purposes of sections 13(d) or 13(g) of the Act, the beneficial owner of any securities covered by this filing.

None of the Reporting Persons beneficially own any other shares of Common Stock of the Issuer.

(c) During the last 60 days, no transactions in the Common Stock were effected by any of the Reporting Persons.

(d) No person other than a Reporting Person has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of
shares of, Common Stock beneficially owned by the Reporting Persons.

(e) Not applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.

The information set forth in Item 4 of this Schedule 13D is hereby incorporated herein by reference.

Except for the BlueMountain Funds, none of the Reporting Persons is a party to any contract, arrangement, understanding or relationship with respect to any
securities of the Issuer.

On the Restructuring Effective Date, pursuant to the Schemes, the Issuer and certain of its subsidiaries, as borrowers and
guarantors, entered into a new credit agreement dated September 22, 2017 (the Credit Agreement) with the BlueMountain Funds and certain other creditors of the Issuer (the Lenders), which Credit Agreement
contains limited financial covenants. In addition, the Issuer and certain of its subsidiaries will guarantee the obligations of the Credit Agreement and collateral has been granted to the Lenders by way of a first priority lien over substantially
all existing and newly acquired assets of the borrowers and guarantors. The Credit Agreement consists of an about $450 million senior secured term loan facility bearing interest at 8.00% per annum with a maturity date of September 20,
2024.

Also on the Restructuring Effective Date, the Issuer entered into a Governance Agreement dated September 22, 2017 (the Governance
Agreement
) with the BlueMountain Funds and certain other creditors of the Issuer receiving Common Stock pursuant to the Schemes. The Governance Agreement provides for certain governance and shareholders rights, including customary
registration rights.

The summary of the Credit Agreement and the Governance Agreement set forth above does not purport to be complete and is qualified in
its entirety by reference to the text of the Credit Agreement and the Governance Agreement, copies of which are being filed as Exhibits 5 and 6, respectively, and are incorporated herein by reference.

Item 7. Material to be Filed as Exhibits.

1. Joint
Filing Agreement dated September 29, 2017, attached as Exhibit 1 hereto.

2. Restructuring Agreement (incorporated herein by reference to Exhibit 10.1
to Form 6-K filed by the Issuer on March 28, 2017).

3. Press Release of the Issuer dated as of July 21, 2017 (incorporated herein by reference
to Exhibit 99.1 to Form 6-K filed by the Issuer on July 21, 2017).

4. Press Release dated as of September 22, 2017 (incorporated herein by
reference to Exhibit 99.1 to Form 6-K filed by the Issuer on September 22, 2017).

5. Credit Agreement (incorporated herein by reference to Exhibit
10.1 to Form 6-K filed by the Issuer on September 22, 2017).

6. Governance Agreement (incorporated herein by reference to Exhibit 10.3 to Form 6-K
filed by the Issuer on September 22, 2017).

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 22 of 24 – SEC Filing


SIGNATURES

After reasonable inquiry and to the best knowledge and belief of the undersigned, the undersigned certifies that the information set forth in this statement
with respect to the undersigned is true, complete and correct.

Date: September 29, 2017

BLUEMOUNTAIN CAPITAL MANAGEMENT, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer
BLUEMOUNTAIN GP HOLDINGS, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer
BLUE MOUNTAIN CREDIT GP, LLC
BY: BLUEMOUNTAIN GP HOLDINGS, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer
BLUE MOUNTAIN CA MASTER FUND GP, LTD.
By:

/s/ ANDREW FELDSTEIN

Name: Andrew Feldstein, Director

BLUE MOUNTAIN CREDIT ALTERNATIVES MASTER FUND L.P.

BY: BLUE MOUNTAIN CA MASTER FUND GP, LTD.

By:

/s/ ANDREW FELDSTEIN

Name: Andrew Feldstein, Director
BLUEMOUNTAIN FOINAVEN GP, LLC
BY: BLUEMOUNTAIN GP HOLDINGS, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer
BLUEMOUNTAIN FOINAVEN MASTER FUND L.P.
BY: BLUEMOUNTAIN FOINAVEN GP, LLC
BY: BLUEMOUNTAIN GP HOLDINGS, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 23 of 24 – SEC Filing


BLUEMOUNTAIN LONG/SHORT CREDIT GP, LLC
BY: BLUEMOUNTAIN GP HOLDINGS, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer
BLUEMOUNTAIN GUADALUPE PEAK FUND L.P.
BY: BLUEMOUNTAIN LONG/SHORT CREDIT GP, LLC
BY: BLUEMOUNTAIN GP HOLDINGS, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer

BLUEMOUNTAIN MONTENVERS GP S.à r.l.

By:

/s/ PAUL FRIEDMAN

Name: Paul Friedman, Authorized Person
BLUEMOUNTAIN MONTENVERS MASTER FUND SCA SICAV-SIF
BY: BLUEMOUNTAIN MONTENVERS GP S.à r.l.
By:

/s/ PAUL FRIEDMAN

Name: Paul Friedman, Authorized Person
BLUEMOUNTAIN SUMMIT OPPORTUNITIES GP II, LLC
BY: BLUEMOUNTAIN GP HOLDINGS, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer
BLUEMOUNTAIN SUMMIT TRADING L.P.
BY: BLUEMOUNTAIN SUMMIT OPPORTUNITIES GP II, LLC
BY: BLUEMOUNTAIN GP HOLDINGS, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer
BLUEMOUNTAIN KICKING HORSE FUND GP, LLC
BY: BLUEMOUNTAIN GP HOLDINGS, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer
BLUEMOUNTAIN KICKING HORSE FUND L.P.
BY: BLUEMOUNTAIN KICKING HORSE FUND GP, LLC
BY: BLUEMOUNTAIN GP HOLDINGS, LLC
By:

/s/ ERIC M. ALBERT

Name: Eric M. Albert, Chief Compliance Officer

Follow Ocean Rig Udw Inc.
Trade () Now!

Page 24 of 24 – SEC Filing


BLUEMOUNTAIN TIMBERLINE LTD.
By:

/s/ ANDREW FELDSTEIN

Name: Andrew Feldstein, Director

The original statement shall be signed by each person on whose behalf the statement is filed or his authorized
representative. If the statement is signed on behalf of a person by his authorized representative (other than an executive officer or general partner of the filing person), evidence of the representatives authority to sign on behalf of such
person shall be filed with the statement; provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference. The name and any title of each person who signs the
statement shall be typed or printed beneath his signature.

ATTENTION: INTENTIONAL MISSTATEMENTS OR OMISSIONS OF FACT CONSTITUTE FEDERAL CRIMINAL
VIOLATIONS (SEE 18 U.S.C. 1001)

Follow Ocean Rig Udw Inc.
Trade () Now!