UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934*

(Amendment No. 4)

Hudson Pacific Properties, Inc.

(Name of Issuer)

Common Stock, par value $.01 per share

(Title of Class of Securities)

444097109

(CUSIP Number)

Frank Cohen

The Blackstone Group LP

345 Park Avenue

New York, New York 10154

Tel: (212) 583-5000

with copies to:

Brian M. Stadler, Esq.

Edgar J. Lewandowski, Esq.

Simpson Thacher & Bartlett LLP

425 Lexington Avenue

New York, New York 10017

Tel: (212) 455-2000

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

November 21, 2016

(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 Rule 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 person’s 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).

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP V Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     3,820,963
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     3,820,963
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     3,820,963
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     2.7%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP V Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP V.TE.1 Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     1,337,272
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     1,337,272
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     1,337,272
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     1.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP V.TE.1 Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP V.TE.2 Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     3,435,688
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     3,435,688
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     3,435,688
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     2.5%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP V.TE.2 Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP V.F Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     939,435
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     939,435
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     939,435
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%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP V.F Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BRE Holdings V Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     384,897
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     384,897
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     384,897
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%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BRE Holdings V Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP VI Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     2,666,416
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     2,666,416
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     2,666,416
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     1.9%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP VI Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP VI.TE.1 Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     776,541
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     776,541
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     776,541
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.6%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP VI.TE.1 Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP VI.TE.2 Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     1,628,045
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     1,628,045
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     1,628,045
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%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP VI.TE.2 Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP VI AV Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     1,321,522
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     1,321,522
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     1,321,522
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     1.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP VI AV Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP (AIV) VI Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     8,227
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     8,227
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     8,227
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     Less than 0.1%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BREP (AIV) VI Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BRE Holdings VI Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     47,091
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     47,091
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     47,091
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     Less than 0.1%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BRE Holdings VI Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BFREP VI SMD Holdco A 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     161,090
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     161,090
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     161,090
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.1%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS HPP BFREP VI SMD Holdco B 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     0
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     0
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.0%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Partners V 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     3,820,963
		8	SHARED VOTING POWER     697,604
		9	SOLE DISPOSITIVE POWER     3,820,963
		10	SHARED DISPOSITIVE POWER     697,604
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     4,518,567
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     3.2%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Partners V.TE.1 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     1,337,272
		8	SHARED VOTING POWER     8,612
		9	SOLE DISPOSITIVE POWER     1,337,272
		10	SHARED DISPOSITIVE POWER     8,612
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     1,345,884
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     1.0%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Partners V.TE.2 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     3,435,688
		8	SHARED VOTING POWER     8,612
		9	SOLE DISPOSITIVE POWER     3,435,688
		10	SHARED DISPOSITIVE POWER     8,612
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     3,444,300
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     2.5%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Partners V.F 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     939,435
		8	SHARED VOTING POWER     8,612
		9	SOLE DISPOSITIVE POWER     939,435
		10	SHARED DISPOSITIVE POWER     8,612
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     948,047
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%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Holdings V 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     384,897
		8	SHARED VOTING POWER     8,612
		9	SOLE DISPOSITIVE POWER     384,897
		10	SHARED DISPOSITIVE POWER     8,612
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     393,509
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%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Partners VI 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     2,666,416
		8	SHARED VOTING POWER     688,992
		9	SOLE DISPOSITIVE POWER     2,666,416
		10	SHARED DISPOSITIVE POWER     688,992
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     3,355,408
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     2.4%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Partners VI.TE.1 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     776,541
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     776,541
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     776,541
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.6%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Partners VI.TE.2 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     1,628,045
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     1,628,045
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     1,628,045
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%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Partners VI (AV) 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     1,321,522
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     1,321,522
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     1,321,522
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     1.0%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Partners (AIV) VI 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     8,227
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     8,227
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     8,227
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     Less than 0.1%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Holdings VI 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     47,091
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     47,091
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     47,091
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     Less than 0.1%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Family Real Estate Partnership VI – SMD 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     161,090
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     161,090
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     161,090
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.1%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Nantucket Services L.L.C.
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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     8,612
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     8,612
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     8,612
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     Less than 0.1%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackhawk Services 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     688,992
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     688,992
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     688,992
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.5%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Associates VI 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     6,400,751
		8	SHARED VOTING POWER     688,992
		9	SOLE DISPOSITIVE POWER     6,400,751
		10	SHARED DISPOSITIVE POWER     688,992
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     7,089,743
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%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Real Estate Associates V 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     9,533,358
		8	SHARED VOTING POWER     697,604
		9	SOLE DISPOSITIVE POWER     9,533,358
		10	SHARED DISPOSITIVE POWER     697,604
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     10,230,962
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     7.2%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS BREP V Side-by-Side GP L.L.C.
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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     384,897
		8	SHARED VOTING POWER     8,612
		9	SOLE DISPOSITIVE POWER     384,897
		10	SHARED DISPOSITIVE POWER     8,612
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     393,509
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%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS BREP VI Side-by-Side GP L.L.C.
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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     47,091
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     47,091
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     47,091
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     Less than 0.1%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Family GP L.L.C.
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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     161,090
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     161,090
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     161,090
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     0.1%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Holdings II 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     9,926,867
		8	SHARED VOTING POWER     697,604
		9	SOLE DISPOSITIVE POWER     9,926,867
		10	SHARED DISPOSITIVE POWER     697,604
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     10,624,471
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     7.5%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS BREA V L.L.C.
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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     9,533,358
		8	SHARED VOTING POWER     697,604
		9	SOLE DISPOSITIVE POWER     9,533,358
		10	SHARED DISPOSITIVE POWER     697,604
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     10,230,962
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     7.2%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Holdings III 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Quebec
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     6,447,842
		8	SHARED VOTING POWER     688,992
		9	SOLE DISPOSITIVE POWER     6,447,842
		10	SHARED DISPOSITIVE POWER     688,992
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     7,136,834
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     5.1%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS BREA VI L.L.C.
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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     6,400,751
		8	SHARED VOTING POWER     688,992
		9	SOLE DISPOSITIVE POWER     6,400,751
		10	SHARED DISPOSITIVE POWER     688,992
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     7,089,743
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%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Holdings I/II GP Inc.
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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     9,926,867
		8	SHARED VOTING POWER     697,604
		9	SOLE DISPOSITIVE POWER     9,926,867
		10	SHARED DISPOSITIVE POWER     697,604
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     10,624,471
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     7.5%
14	TYPE OF REPORTING PERSON (See Instructions)     CO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Holdings III GP 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     6,447,842
		8	SHARED VOTING POWER     688,992
		9	SOLE DISPOSITIVE POWER     6,447,842
		10	SHARED DISPOSITIVE POWER     688,992
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     7,136,834
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     5.1%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Holdings III GP Management L.L.C.
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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     6,447,842
		8	SHARED VOTING POWER     688,992
		9	SOLE DISPOSITIVE POWER     6,447,842
		10	SHARED DISPOSITIVE POWER     688,992
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     7,136,834
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     5.1%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS The Blackstone Group 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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     17,063,701
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     17,063,701
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     17,063,701
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     11.7%
14	TYPE OF REPORTING PERSON (See Instructions)     PN

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Blackstone Group Management L.L.C.
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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     17,063,701
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     17,063,701
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     17,063,701
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     11.7%
14	TYPE OF REPORTING PERSON (See Instructions)     OO

SCHEDULE 13D

CUSIP No. 444097109

1	NAMES OF REPORTING PERSONS Stephen A. Schwarzman
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)     OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)    ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION     United States of America
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER     17,224,791
		8	SHARED VOTING POWER     0
		9	SOLE DISPOSITIVE POWER     17,224,791
		10	SHARED DISPOSITIVE POWER     0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON     17,224,791
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)    ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)     11.8%
14	TYPE OF REPORTING PERSON (See Instructions)     IN

This Amendment No. 4 to Schedule 13D relates to shares of Common Stock, par value $0.01 per share (the “Common Stock”), of Hudson Pacific Properties, Inc., a Maryland corporation (the “Issuer”), and amends the initial statement on Schedule 13D filed on April 13, 2015 (the “Original Schedule 13D”), as amended by Amendment No. 1 to the Original Schedule 13D filed on January 5, 2016, as amended by Amendment No. 2 to the Original Schedule 13D filed on May 16, 2016, as amended by Amendment No. 3 to the Original Schedule 13D filed on July 22, 2016 (the Original Schedule 13D, as amended, the “Schedule 13D”). Capitalized terms used but not defined in this Amendment No. 4 shall have the same meanings ascribed to them in the Schedule 13D.

Item 4. Purpose of Transaction.

Item 4 of the Schedule 13D is hereby amended and supplemented as follows:

On November 21, 2016, the Issuer entered into a purchase agreement with the Holdco Subsidiaries, Nantucket Services L.L.C. and Blackhawk Services II LLC (collectively, the “Blackstone Sellers”), pursuant to which the Issuer agreed to purchase from the Blackstone Sellers an aggregate of 17,250,000 OP Units, at a purchase price of $32.50 per OP Unit (the “November 2016 Purchase Agreement”). The purchase described above was in connection with the Issuer entering into an underwriting agreement, dated as of November 21, 2016, with the underwriter (the “November 2016 Underwriter”) and selling stockholders party thereto (the “November 2016 Underwriting Agreement”), pursuant to which the Issuer agreed to sell 17,533,099 shares of its Common Stock and the selling stockholders party thereto agreed to sell 1,165,918 shares of Common Stock in an underwritten offering (the “November 2016 Offering”). The Issuer intended to use the net proceeds received by it in the November 2016 Offering to purchase the 17,250,000 OP Units from the Blackstone Sellers and 283,099 OP Units from other sellers. The transactions described herein closed on November 28, 2016.

In connection with the November 2016 Offering, the Blackstone Sellers agreed with the November 2016 Underwriter, subject to specified exceptions, not to offer, pledge or sell, or enter into any agreement to sell or otherwise dispose of or transfer, any shares of Common Stock or securities convertible into or exchangeable or exercisable for shares of Common Stock, for a period of 30 days after November 21, 2016, except with the prior written consent of the November 2016 Underwriter (the “November 2016 Lock-up Agreement”).

References to and descriptions of the November 2016 Lock-up Agreement set forth above in this Item 4 do not purport to be complete and are qualified in their entirety by reference to the full text of the November 2016 Lock-up Agreement, a form of which has been filed as Exhibit H hereto and incorporated herein by reference.

Item 5. Interest in Securities of the Issuer.

Item 5 of the Schedule 13D is hereby amended by amending and restating the first four paragraphs of Item 5(a) and (b) as follows:

(a) and (b). Calculations of the percentage of shares of Common Stock beneficially owned assumes that there are a total of 137,040,847 shares of Common Stock outstanding upon completion of the November 2016 Offering, as reported in the Issuer’s prospectus supplement filed on November 23, 2016, and takes into account the number of OP Units that may be deemed to be beneficially owned by the Reporting Persons, as applicable. Pursuant to the terms of the limited partnership agreement of the Operating Partnership, and subject to certain requirements and restrictions, OP Units are redeemable for shares of Common Stock, on a one-for-one basis, or, at the option of the Issuer, cash.

The aggregate number and percentage of shares of Common Stock beneficially owned by each Reporting Person and, for each Reporting Person, the number of shares as to which there is sole power to vote or to direct the vote, shared power to vote or to direct the vote, sole power to dispose or to direct the disposition, or shared power to dispose or to direct the disposition are set forth on rows 7 through 11 and row 13 of the cover pages of the Schedule 13D and are incorporated herein by reference.

As of the date hereof, taking into account the sales in the November 2016 Offering:

• HPP BREP V Holdco A LLC directly owns 1,913,567 shares of Common Stock and 1,907,396 OP Units, HPP BREP V.TE.1 Holdco A LLC directly owns 669,716 shares of Common Stock and 667,556 OP Units, HPP BREP V.TE.2 Holdco A LLC directly owns 1,720,620 shares of Common Stock and 1,715,068 OP Units, HPP BREP V.F Holdco A LLC directly owns 470,476 shares of Common Stock and 468,959 OP Units, HPP BRE Holdings V Holdco A LLC directly owns 192,760 shares of Common Stock and 192,137 OP Units, HPP BREP VI Holdco A LLC directly owns 1,335,362 shares of Common Stock and 1,331,054 OP Units, HPP BREP VI.TE.1 Holdco A LLC directly owns 388,898 shares of Common Stock and 387,643 OP Units, HPP BREP VI.TE.2 Holdco A LLC directly owns 815,338 shares of Common Stock and 812,707 OP Units, HPP BREP VI AV Holdco A LLC directly owns 661,829 shares of Common Stock and 659,693 OP Units, HPP BREP (AIV) VI Holdco A LLC directly owns 4,120 shares of Common Stock and 4,107 OP Units, HPP BRE Holdings VI Holdco A LLC directly owns 23,584 shares of Common Stock and 23,507 OP Units and HPP BFREP VI SMD Holdco A LLC directly owns 80,675 shares of Common Stock and 80,415 OP Units;

• None of the Holdco B Subsidiaries beneficially owns any shares of Common Stock or OP Units; and

• Nantucket Services L.L.C. directly owns 4,313 shares of Common Stock and 4,299 OP Units and Blackhawk Services II LLC directly owns 345,053 shares of Common Stock and 343,939 OP Units.

Item 5(c) of the Schedule 13D is hereby amended and restated as follows:

(c) On November 28, 2016, pursuant to the November 2016 Purchase Agreement, the Blackstone Sellers sold an aggregate of 17,250,000 OP Units to the Issuer at a price of $32.50 per OP Unit. The number of OP Units sold by each Blackstone Seller pursuant to the Purchase Agreement is set forth below:

Name of Blackstone Seller	No. of OP Units Sold
HPP BREP V Holdco A LLC		3,518,893
HPP BREP V.TE.1 Holdco A LLC		1,231,555
HPP BREP V.TE.2 Holdco A LLC		3,164,080
HPP BREP V.F Holdco A LLC		865,168
HPP BRE Holdings V Holdco A LLC		354,823
HPP BREP VI Holdco A LLC		2,451,274
HPP BREP VI.TE.1 Holdco A LLC		713,884
HPP BREP VI.TE.2 Holdco A LLC		1,496,685
HPP BREP VI AV Holdco A LLC		1,214,894
HPP BREP (AIV) VI Holdco A LLC		7,564
HPP BRE Holdings VI Holdco A LLC		43,292
HPP BFREP VI SMD Holdco A LLC		148,092
HPP BREP V Holdco B LLC		307,659
HPP BREP V.TE.1 Holdco B LLC		107,674

HPP BREP V.TE.2 Holdco B LLC	276,637
HPP BREP V.F Holdco B LLC	75,642
HPP BRE Holdings V Holdco B LLC	30,638
HPP BREP VI Holdco B LLC	219,045
HPP BREP VI.TE.1 Holdco B LLC	63,793
HPP BREP VI.TE.2 Holdco B LLC	133,743
HPP BREP VI AV Holdco B LLC	108,563
HPP BREP (AIV) VI Holdco B LLC	676
HPP BRE Holdings VI Holdco B LLC	3,868
HPP BFREP VI SMD Holdco B LLC	13,234
Nantucket Services, LLC	8,624
Blackhawk Services II LLC	690,000

Except as set forth in this Schedule 13D, none of the Reporting Persons has effected any transactions in the Common Stock during the past 60 days.

Item 5(e) of the Schedule 13D is hereby amended and restated as follows:

(e) As of November 28, 2016, none of the Holdco B Subsidiaries beneficially owns any shares of Common Stock.

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

Item 6 of the Schedule 13D is hereby amended by amending and restating the third paragraph under the “Margin Loan Facility” section as follows:

As of the date hereof, the Borrower has an aggregate principal amount of $125.0 million outstanding under the Loan Agreement. Subject to the satisfaction of certain conditions, the Borrower may borrow up to an additional $100 million under the Loan Agreement if the existing or new lenders agree to provide such additional advances. After giving effect to the release of the 16,551,376 OP Units from the security interests granted under the Pledge Agreements in connection with the sale of OP Units described in Item 4 above, 8,276,945 shares of Common Stock and 8,250,242 OP Units collectively remain pledged by the Borrower and the Holdco A Subsidiaries pursuant to the Pledge Agreements to secure borrowings under the Loan Agreement.

Item 7. Material to Be Filed as Exhibits.

Item 7 of the Schedule 13D is hereby amended and supplemented as follows:

Exhibit H Form of Lock-up Agreement, dated as of November 21, 2016, by and among Hudson Pacific Properties, Inc. and the Blackstone Sellers.

SIGNATURES

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

Dated: November 30, 2016

HPP BREP V HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP V HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP V.F HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP V.F HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP V.TE.1 HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP V.TE.1 HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP V.TE.2 HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director

[Hudson Pacific Properties, Inc. – Schedule 13D/A]

HPP BREP V.TE.2 HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BRE HOLDINGS V HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BRE HOLDINGS V HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP VI HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP VI HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BFREP VI SMD HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BFREP VI SMD HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BRE HOLDINGS VI HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director

[Hudson Pacific Properties, Inc. – Schedule 13D/A]

HPP BRE HOLDINGS VI HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP VI.TE.1 HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP VI.TE.1 HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP VI.TE.2 HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP VI.TE.2 HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP VI AV HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP VI AV HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
HPP BREP (AIV) VI HOLDCO A LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director

[Hudson Pacific Properties, Inc. – Schedule 13D/A]

HPP BREP (AIV) VI HOLDCO B LLC
By:	/s/ Michael Lascher
Name:	Michael Lascher
Title:	Managing Director
BLACKSTONE REAL ESTATE PARTNERS V L.P.
By: Blackstone Real Estate Associates V L.P., its general partner
By: BREA V L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE PARTNERS V.TE.1 L.P.
By: Blackstone Real Estate Associates V L.P., its general partner
By: BREA V L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE PARTNERS V.TE.2 L.P.
By: Blackstone Real Estate Associates V L.P., its general partner
By: BREA V L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE PARTNERS V.F L.P.
By: Blackstone Real Estate Associates V L.P., its general partner
By: BREA V L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE HOLDINGS V L.P.
By: BREP V Side-by-Side GP L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE PARTNERS VI L.P.
By: Blackstone Real Estate Associates VI L.P., its general partner
By: BREA VI L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director

[Hudson Pacific Properties, Inc. – Schedule 13D/A]

BLACKSTONE REAL ESTATE PARTNERS VI.TE.1 L.P.
By: Blackstone Real Estate Associates VI L.P., its general partner
By: BREA VI L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE PARTNERS VI.TE.2 L.P.
By: Blackstone Real Estate Associates VI L.P., its general partner
By: BREA VI L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE PARTNERS VI (AV) L.P.
By: Blackstone Real Estate Associates VI L.P., its general partner
By: BREA VI L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE PARTNERS (AIV) VI L.P.
By: Blackstone Real Estate Associates VI L.P., its general partner
By: BREA VI L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE HOLDINGS VI L.P.
By: BREP VI Side-by-Side GP L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE FAMILY REAL ESTATE PARTNERSHIP VI – SMD L.P.
By: Blackstone Family GP L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
NANTUCKET SERVICES L.L.C.
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director

[Hudson Pacific Properties, Inc. – Schedule 13D/A]

BLACKHAWK SERVICES II LLC
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE ASSOCIATES V L.P.
By: BREA V L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE REAL ESTATE ASSOCIATES VI L.P.
By: BREA VI L.L.C., its general partner
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BREP V SIDE-BY-SIDE GP L.L.C.
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BREP VI SIDE-BY-SIDE GP L.L.C.
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BLACKSTONE FAMILY GP L.L.C.
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BREA V L.L.C.
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director
BREA VI L.L.C.
By:	/s/ Frank Cohen
Name:	Frank Cohen
Title:	Senior Managing Director

[Hudson Pacific Properties, Inc. – Schedule 13D/A]

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
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
BLACKSTONE HOLDINGS I/II GP INC.
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
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
BLACKSTONE HOLDINGS III GP MANAGEMENT L.L.C.
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
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
BLACKSTONE GROUP MANAGEMENT L.L.C.
By:	/s/ John G. Finley
Name:	John G. Finley
Title:	Chief Legal Officer
/s/ Stephen A. Schwarzman
Stephen A. Schwarzman

[Hudson Pacific Properties, Inc. – Schedule 13D/A]