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

1

NAMES OF REPORTING PERSONS

BlueMountain GP Holdings, LLC

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a)

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(b)

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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

2,726,396

9

SOLE DISPOSITIVE POWER

0

10

SHARED DISPOSITIVE POWER

2,726,396

11

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

2,726,396

12

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

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13

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

3.0% (1)

14

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

OO