Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Blackstone Holdings II L.P.
2. Date of Event Requiring Statement (Month/Day/Year)
04/01/2015
3. Issuer Name and Ticker or Trading Symbol
Hudson Pacific Properties, Inc. [HPP]
(Last)
(First)
(Middle)
C/O THE BLACKSTONE GROUP L.P., 345 PARK AVENUE
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10154
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 1,913,567
I
See Footnotes (1) (17) (19) (21) (22) (23)
Common Stock 669,716
I
See Footnotes (2) (17) (19) (21) (22) (23)
Common Stock 1,720,620
I
See Footnotes (3) (17) (19) (21) (22) (23)
Common Stock 470,476
I
See Footnotes (4) (17) (19) (21) (22) (23)
Common Stock 192,760
I
See Footnotes (5) (17) (19) (21) (22) (23)
Common Stock 1,335,362
I
See Footnotes (6) (18) (19) (21) (22) (23)
Common Stock 388,898
I
See Footnotes (7) (18) (19) (21) (22) (23)
Common Stock 815,338
I
See Footnotes (8) (18) (19) (21) (22) (23)
Common Stock 661,829
I
See Footnotes (9) (18) (19) (21) (22) (23)
Common Stock 4,120
I
See Footnotes (10) (18) (19) (21) (22) (23)
Common Stock 23,584
I
See Footnotes (11) (18) (19) (21) (22) (23)
Common Stock 80,675
I
See Footnotes (12) (20) (21) (22) (23)
Common Stock 4,313
I
See Footnotes (13) (16) (17) (19) (20) (21) (22) (23)
Common Stock 345,053
I
See Footnotes (14) (16) (17) (18) (19) (20) (21) (22) (23)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Common Units   (15)   (15) Common Stock 12,166,992 $ (15) I See Footnotes (1) (17) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 4,258,243 $ (15) I See Footnotes (2) (17) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 10,940,178 $ (15) I See Footnotes (3) (17) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 2,991,420 $ (15) I See Footnotes (4) (17) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 1,225,619 $ (15) I See Footnotes (5) (17) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 8,490,605 $ (15) I See Footnotes (6) (18) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 2,472,719 $ (15) I See Footnotes (7) (18) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 5,184,145 $ (15) I See Footnotes (8) (18) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 4,208,091 $ (15) I See Footnotes (9) (18) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 26,199 $ (15) I See Footnotes (10) (18) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 149,951 $ (15) I See Footnotes (11) (18) (19) (21) (22) (23)
Common Units   (15)   (15) Common Stock 512,956 $ (15) I See Footnotes (12) (20) (21) (22) (23)
Common Units   (15)   (15) Common Stock 27,423 $ (15) I See Footnotes (13) (16) (17) (19) (20) (21) (22) (23)
Common Units   (15)   (15) Common Stock 2,193,939 $ (15) I See Footnotes (14) (16) (17) (18) (19) (20) (21) (22) (23)

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Blackstone Holdings II L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
BLACKSTONE FAMILY GP LLC
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Holdings I/II GP Inc
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Holdings III L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Holdings III GP L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Holdings III GP Management L.L.C.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Group L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Group Management L.L.C.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
SCHWARZMAN STEPHEN A
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    

Signatures

BLACKSTONE FAMILY GP L.L.C., By: /s/ Frank Cohen, Name: Frank Cohen, Title: Senior Managing Director 04/13/2015
**Signature of Reporting Person Date

BLACKSTONE HOLDINGS II L.P., By: Blackstone Holdings I/II GP Inc., its general partner, By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 04/13/2015
**Signature of Reporting Person Date

BLACKSTONE HOLDINGS I/II GP INC., By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 04/13/2015
**Signature of Reporting Person Date

BLACKSTONE HOLDINGS III L.P., By: Blackstone Holdings III GP L.P., its general partner, By: Blackstone Holdings III GP Management L.L.C., its general partner, By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 04/13/2015
**Signature of Reporting Person Date

BLACKSTONE HOLDINGS III GP L.P., By: Blackstone Holdings III GP Management L.L.C., its general partner, By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 04/13/2015
**Signature of Reporting Person Date

BLACKSTONE HOLDINGS III GP MANAGEMENT L.L.C., By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 04/13/2015
**Signature of Reporting Person Date

THE BLACKSTONE GROUP L.P., By: Blackstone Group Management L.L.C., its general partner, By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 04/13/2015
**Signature of Reporting Person Date

BLACKSTONE GROUP MANAGEMENT L.L.C., By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 04/13/2015
**Signature of Reporting Person Date

/s/ Stephen A. Schwarzman 04/13/2015
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Reflects securities of the issuer held directly by Blackstone Real Estate Partners V L.P.
(2) Reflects securities of the issuer held directly by Blackstone Real Estate Partners V.TE.1 L.P.
(3) Reflects securities of the issuer held directly by Blackstone Real Estate Partners V.TE.2 L.P.
(4) Reflects securities of the issuer held directly by Blackstone Real Estate Partners V.F L.P.
(5) Reflects securities of the issuer held directly by Blackstone Real Estate Holdings V L.P.
(6) Reflects securities of the issuer held directly by Blackstone Real Estate Partners VI L.P.
(7) Reflects securities of the issuer held directly by Blackstone Real Estate Partners VI.TE.1 L.P.
(8) Reflects securities of the issuer held directly by Blackstone Real Estate Partners VI.TE.2 L.P.
(9) Reflects securities of the issuer held directly by Blackstone Real Estate Partners VI (AV) L.P.
(10) Reflects securities of the issuer held directly by Blackstone Real Estate Partners (AIV) VI L.P.
(11) Reflects securities of the issuer held directly by Blackstone Real Estate Holdings VI L.P.
(12) Reflects securities of the issuer held directly by Blackstone Family Real Estate Partnership VI - SMD L.P.
(13) Reflects securities of the issuer held directly by Nantucket Services, LLC.
(14) Reflects securities of the issuer held directly by Blackhawk Services II LLC (collectively, together with the entities listed in footnotes 1 through 13, the "Blackstone Vehicles").
(15) Pursuant to the terms of the Third Amended and Restated Limited Partnership Agreement of Hudson Pacific Properties, L.P., and subject to certain requirements and restrictions, the common units of Hudson Pacific Properties, L.P. are redeemable for shares of common stock of the issuer, on a one-for-one basis or, at the option of the issuer, for cash.
(16) The manager of Nantucket Services, LLC is, acting collectively and unanimously, Blackstone Real Estate Partners V L.P., Blackstone Real Estate Partners V.TE.1 L.P., Blackstone Real Estate Partners V.TE.2 L.P., Blackstone Real Estate Partners V.F L.P. and Blackstone Real Estate Holdings V L.P. The manager of Blackhawk Services II LLC is, acting collectively and unanimously, Blackstone Real Estate Partners V L.P. and Blackstone Real Estate Partners VI L.P.
(17) The general partner of each of Blackstone Real Estate Partners V L.P., Blackstone Real Estate Partners V.TE.1 L.P., Blackstone Real Estate Partners V.TE.2 L.P. and Blackstone Real Estate Partners V.F L.P. is Blackstone Real Estate Associates V L.P. The general partner of Blackstone Real Estate Associates V L.P. is BREA V L.L.C. The general partner of Blackstone Real Estate Holdings V L.P. is BREP V Side-by-Side GP L.L.C. The sole member of BREP V Side-by-Side GP L.L.C., and the managing member of BREA V L.L.C., is Blackstone Holdings II L.P. The general partner of Blackstone Holdings II L.P. is Blackstone Holdings I/II GP Inc. The sole shareholder of Blackstone Holdings I/II GP Inc. is The Blackstone Group L.P.
(18) The general partner of each of Blackstone Real Estate Partners VI L.P., Blackstone Real Estate Partners VI.TE.1 L.P., Blackstone Real Estate Partners VI.TE.2 L.P., Blackstone Real Estate Partners VI (AV) L.P. and Blackstone Real Estate Partners (AIV) VI L.P. is Blackstone Real Estate Associates VI L.P. The general partner of Blackstone Real Estate Associates VI L.P. is BREA VI L.L.C. The general partner of Blackstone Real Estate Holdings VI L.P. is BREP VI Side-by-Side GP L.L.C. The sole member of BREP VI Side-by-Side GP L.L.C., and the managing member of BREA VI L.L.C., is Blackstone Holdings III L.P. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P.
(19) The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly-owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.
(20) The general partner of Blackstone Family Real Estate Partnership VI - SMD L.P. is Blackstone Family GP L.L.C., which is in turn, wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.
(21) Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 3.
(22) Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.
(23) Each of the Reporting Persons (other than to the extent it directly holds securities reported herein) disclaims beneficial ownership of the securities held by the other Reporting Persons, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934 (the "Act"), each of the Reporting Persons (other than to the extent it directly holds securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose. The filing of this Form 3 shall not be deemed an admission that the Reporting Persons are subject to Section 16 of the Act.

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