As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 2/13/19  Sculptor Capital LP               SC 13G/A               1:123K Ocean Rig UDW Inc.                Donnelley … Solutions/FA 
          Daniel S. Och³
          Och-Ziff Capital Management Group LLC³
          Och-Ziff Holding Corp.³
12/27/18  Ocean Rig UDW Inc.                15-12B     12/27/18    1:32K                                    Toppan Merrill/FA        
12/26/18‡ Ocean Rig UDW Inc.                EFFECT     12/26/18    1:2K                                     SEC #5                   
12/19/18  Ocean Rig UDW Inc.                POS AM                 1:24K                                    Toppan Merrill/FA        
 12/7/18  Elliott Associates, L.P.          SC 13D/A               1:56K  Ocean Rig UDW Inc.                Schulte Roth & Z… LLP/FA 
 12/6/18  Ocean Rig UDW Inc.                POSASR      12/6/18    1:20K                                    Seward & Kissel LLP      
 12/6/18  Nasdaq Stock Market LLC           25-NSE      12/6/18    2:3K   Ocean Rig UDW Inc.                                         
11/29/18  Ocean Rig UDW Inc.                425                    2:126K Ocean Rig UDW Inc.                Seward & Kissel LLP      
11/29/18  Ocean Rig UDW Inc.                6-K        11/30/18    2:124K                                   Seward & Kissel LLP      
11/14/18  Ocean Rig UDW Inc.                6-K         9/30/18    2:632K                                   Seward & Kissel LLP      
11/13/18  Ocean Rig UDW Inc.                6-K        11/30/18    2:288K                                   Seward & Kissel LLP      
 11/5/18  Transocean Ltd.                   425                    1:79K  Ocean Rig UDW Inc.                Toppan Merrill Bridge/FA 
10/31/18  Transocean Ltd.                   425                    1:65K  Ocean Rig UDW Inc.                Toppan Merrill Bridge/FA 
10/31/18‡ Transocean Ltd.                   425        10/30/18    1:2.1M Ocean Rig UDW Inc.                Toppan Merrill Bridge/FA 
10/29/18  Transocean Ltd.                   425                    1:2.1M Ocean Rig UDW Inc.                Toppan Merrill Bridge/FA 
10/23/18‡ Transocean Ltd.                   425        10/22/18    2:77K  Ocean Rig UDW Inc.                Toppan Merrill Bridge/FA 
 10/9/18  Transocean Ltd.                   425                    1:34K  Ocean Rig UDW Inc.                Toppan Merrill Bridge/FA 
 10/9/18  Ocean Rig UDW Inc.                425                    2:35K  Ocean Rig UDW Inc.                Seward & Kissel LLP      
 10/9/18  Ocean Rig UDW Inc.                6-K        10/31/18    2:33K                                    Seward & Kissel LLP      
  9/7/18  Economou George                   SC 13D/A               1:73K  Ocean Rig UDW Inc.                Seward & Kissel LLP      

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‡	A non-Insider-Ownership Filing that was accepted after the SEC “closed” at 5:30:00pm ET.  The legal “Filed As Of” date may be the next, or another, day.
¹	Filing/Form Types:  /A
	6-K	Current, Quarterly or Annual Report by a Foreign Issuer — Form 6-K.
	15-12B	Certification of a Termination of Registration of a Class of Securities — Form 15.
	25-NSE	Notice by a Securities Exchange of the Removal from Listing and Registration of Matured, Redeemed or Retired Securities — Form 25.
	425	Prospectus or Communication – Merger.
	EFFECT	SEC Notice of Effectiveness.
	POS AM	Post-Effective Amendment of a Registration Statement.
	POSASR	Post-Effective Amendment of an Automatic Shelf Registration Statement — Form S-3/F-3ASR.
	SC 13D	Statement of Acquisition of Beneficial Ownership by an “Active” Investor — Schedule 13D.
	SC 13G	Statement of Acquisition of Beneficial Ownership by a “Passive” Investor — Schedule 13G.
	/A	Amendment to, or Amended version of, a previous Filing of this Type.
³	Group Member:  A Registrant or non-Registrant party to this Filing made by a Group.