UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 1)*

Whitestone REIT

(Name of Issuer)

Common Shares, par value $0.001 per share

(Title of Class of Securities)

966084204

(CUSIP Number)

Peter McMillan III

President

KBS Strategic Opportunity REIT, Inc.

800 Newport Center Drive, Suite 700

Newport Beach, California 92660

(949) 417-6500

with a copy to:

Robert H. Bergdolt, Esq.

Christopher R. Stambaugh, Esq.

DLA Piper LLP (US)

4141 Parklake Avenue, Suite 300

Raleigh, North Carolina 27612-2350

(919) 786-2000

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

June 19, 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 which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 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 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).

CUSIP No. 966084204 Schedule 13D

1	Name of Reporting Person KBS SOR Properties LLC
2	Check the Appropriate Box if a Member of a Group (a)  ☐        (b)  ☐
3	SEC Use Only
4	Source of Funds (See Instructions) OO
5	Check Box if Disclosure of Legal Proceedings 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 3,215,193
		8	Shared Voting Power 0
		9	Sole Dispositive Power 3,215,193
		10	Shared Dispositive Power 0
11	Aggregate Amount Beneficially Owned by Each Reporting Person 3,215,193
12	Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)  ☐
13	Percent of Class Represented by Amount in Row (11) 8.45%
14	Type of Reporting Person (See Instructions) OO

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CUSIP No. 966084204 Schedule 13D

1	Name of Reporting Person KBS SOR (BVI) Holdings, Ltd.
2	Check the Appropriate Box if a Member of a Group (a)  ☐        (b)  ☐
3	SEC Use Only
4	Source of Funds (See Instructions) OO
5	Check Box if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  ☐
6	Citizenship or Place of Organization British Virgin Islands
Number of Shares Beneficially Owned by Each Reporting Person With		7	Sole Voting Power 3,215,193
		8	Shared Voting Power 0
		9	Sole Dispositive Power 3,215,193
		10	Shared Dispositive Power 0
11	Aggregate Amount Beneficially Owned by Each Reporting Person 3,215,193
12	Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)  ☐
13	Percent of Class Represented by Amount in Row (11) 8.45%
14	Type of Reporting Person (See Instructions) OO

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CUSIP No. 966084204 Schedule 13D

1	Name of Reporting Person KBS Strategic Opportunity Limited Partnership
2	Check the Appropriate Box if a Member of a Group (a)  ☐        (b)  ☐
3	SEC Use Only
4	Source of Funds (See Instructions) OO
5	Check Box if Disclosure of Legal Proceedings 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 3,215,193
		8	Shared Voting Power 0
		9	Sole Dispositive Power 3,215,193
		10	Shared Dispositive Power 0
11	Aggregate Amount Beneficially Owned by Each Reporting Person 3,215,193
12	Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)  ☐
13	Percent of Class Represented by Amount in Row (11) 8.45%
14	Type of Reporting Person (See Instructions) PN

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CUSIP No. 966084204 Schedule 13D

1	Name of Reporting Person KBS Strategic Opportunity REIT, Inc.
2	Check the Appropriate Box if a Member of a Group (a)  ☐        (b)  ☐
3	SEC Use Only
4	Source of Funds (See Instructions) OO
5	Check Box if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  ☐
6	Citizenship or Place of Organization Maryland
Number of Shares Beneficially Owned by Each Reporting Person With		7	Sole Voting Power 3,215,193
		8	Shared Voting Power 0
		9	Sole Dispositive Power 3,215,193
		10	Shared Dispositive Power 0
11	Aggregate Amount Beneficially Owned by Each Reporting Person 3,215,193
12	Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)  ☐
13	Percent of Class Represented by Amount in Row (11) 8.45%
14	Type of Reporting Person (See Instructions) CO

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CUSIP No. 966084204 Schedule 13D

1	Name of Reporting Person KBS Capital Advisors LLC
2	Check the Appropriate Box if a Member of a Group (a)  ☐        (b)  ☐
3	SEC Use Only
4	Source of Funds (See Instructions) OO
5	Check Box if Disclosure of Legal Proceedings 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 3,215,193
		8	Shared Voting Power 0
		9	Sole Dispositive Power 3,215,193
		10	Shared Dispositive Power 0
11	Aggregate Amount Beneficially Owned by Each Reporting Person 3,215,193
12	Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)  ☐
13	Percent of Class Represented by Amount in Row (11) 8.45%
14	Type of Reporting Person (See Instructions) OO

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CUSIP No. 966084204 Schedule 13D

1	Name of Reporting Person Keith D. Hall
2	Check the Appropriate Box if a Member of a Group (a)  ☐        (b)  ☐
3	SEC Use Only
4	Source of Funds (See Instructions) OO
5	Check Box if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  ☐
6	Citizenship or Place of Organization United States
Number of Shares Beneficially Owned by Each Reporting Person With		7	Sole Voting Power 3,215,193
		8	Shared Voting Power 0
		9	Sole Dispositive Power 3,215,193
		10	Shared Dispositive Power 0
11	Aggregate Amount Beneficially Owned by Each Reporting Person 3,215,193
12	Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)  ☐
13	Percent of Class Represented by Amount in Row (11) 8.45%
14	Type of Reporting Person (See Instructions) IN

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CUSIP No. 966084204 Schedule 13D

1	Name of Reporting Person Peter McMillan III
2	Check the Appropriate Box if a Member of a Group (a)  ☐        (b)  ☐
3	SEC Use Only
4	Source of Funds (See Instructions) OO
5	Check Box if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  ☐
6	Citizenship or Place of Organization United States
Number of Shares Beneficially Owned by Each Reporting Person With		7	Sole Voting Power 3,215,193
		8	Shared Voting Power 0
		9	Sole Dispositive Power 3,215,193
		10	Shared Dispositive Power 0
11	Aggregate Amount Beneficially Owned by Each Reporting Person 3,215,193
12	Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)  ☐
13	Percent of Class Represented by Amount in Row (11) 8.45%
14	Type of Reporting Person (See Instructions) IN

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Responses to each item of this Statement on Schedule 13D are incorporated by reference into the response to each other item, as applicable.

Item 1. Security and Issuer

This Amendment No. 1 supplements and amends the Schedule 13D filed on June 13, 2017 by the Reporting Persons (as defined below) (as so amended, the “Schedule 13D”), relating to the common shares of beneficial interest, par value $0.001 per share (the “Common Shares”), of Whitestone REIT, a Maryland real estate investment trust (the “Issuer”). Each Item below amends and supplements the information disclosed under the corresponding Item of the Schedule 13D. Unless otherwise indicated herein, capitalized terms used but not defined in this Amendment No. 1 shall have the same meanings herein as are ascribed to such terms in the Schedule 13D.

Item 3. Source and Amount of Funds or Other Consideration

Item 3 of the Schedule 13D is hereby amended and restated in its entirety as follows:

A total of $38,153,911.99 was paid to acquire the securities reported as beneficially owned herein by the Reporting Persons. The purchase of the securities was funded from general funds available to the Reporting Persons and the applicable subsidiaries and affiliates thereof, including capital contributions from investors.

Item 4. Purpose of Transaction

Item 4 of the Schedule 13D is hereby amended by replacing the first paragraph thereof with the following:

As described in Item 5 below, the Reporting Persons acquired beneficial ownership of the securities reported herein between May 5, 2017 and June 21, 2017 through multiple open market transactions. The Reporting Persons acquired beneficial ownership of the securities reported herein for investment purposes and intend to review their investments in the Issuer on a continuing basis. At the prices at which the securities were acquired, the Reporting Persons consider the Common Shares an attractive investment opportunity on the basis of the Issuer’s real estate portfolio and financial position. In addition, the Reporting Persons intend to seek a dialogue with management of the Issuer to discuss whether certain changes to employee compensation arrangements (including but not limited to long-term equity incentive compensation) could further align the interests between management and shareholders and improve shareholder returns.

Item 5. Interest in Securities of the Issuer

Item 5 of the Schedule 13D is hereby amended and restated in its entirety as follows:

(a) and (b). The Reporting Persons beneficially own an aggregate of 3,215,193 Common Shares, which represent, in the aggregate, approximately, 8.45% of the outstanding Common Shares. The percentage of beneficial ownership reported in this Schedule 13D is based on an aggregate of 38,056,049 Common Shares outstanding as of May 3, 2017, based on information provided by the Issuer in its Quarterly Report on Form 10-Q filed on May 5, 2017.

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The 3,215,193 Common Shares were purchased by SOR Properties in multiple open market brokerage transactions on the New York Stock Exchange (“NYSE”) as described below. SOR BVI (as the sole member of SOR Properties), SOR OP (as the sole shareholder of SOR BVI), SOR REIT (as the sole general partner of SOR OP), the Advisor (as the external advisor to SOR OP), and Messrs. Keith D. Hall, Peter McMillan III (as the members of the Investment Committee of the Advisor approved by the board of directors of KBS SOR to make decisions with respect to the Common Shares), may be deemed to be the beneficial owner of the securities beneficially owned directly by SOR Properties, and each disclaims beneficial ownership of the securities.

(c) SOR Properties acquired the 3,215,193 Common Shares through the following open market purchases:

Date	Number of Common Shares*		Average Price per Common Share*		Aggregate Purchase Price**
May 5, 2017		26,400	$	11.8059	$	311,807.76
May 8, 2017		83,500	$	12.0308	$	1,004,989.30
May 9, 2017		106,367	$	12.0824	$	1,285,696.38
May 10, 2017		2,725	$	12.0850	$	32,945.26
May 11, 2017		76,962	$	12.1733	$	937,266.32
May 12, 2017		100,000	$	12.0570	$	1,206,200.00
May 15, 2017		14,871	$	12.0966	$	179,962.90
May 16, 2017		62,684	$	12.0066	$	752,935.13
May 17, 2017		350,177	$	11.1557	$	3,909,971.33
May 18, 2017		11,696	$	11.2100	$	131,229.12
May 19, 2017		56,877	$	11.5604	$	658,090.57
May 22, 2017		67,265	$	11.9207	$	802,518.54
May 23, 2017		200,000	$	11.8829	$	2,378,580.00
May 24, 2017		142,806	$	12.0231	$	1,718,398.88
May 25, 2017		123,483	$	11.9154	$	1,472,582.46
May 26, 2017		184,801	$	11.8727	$	2,195,934.84
May 30, 2017		200,000	$	11.6870	$	2,339,400.00
May 31, 2017		89,000	$	11.5117	$	1,025,431.30
June 1, 2017		45,788	$	11.5375	$	528,736.93
June 2, 2017		179,259	$	11.7617	$	2,110,183.17
June 5, 2017		103,957	$	11.7909	$	1,226,786.16
June 6, 2017		86,658	$	11.7811	$	1,021,793.14
June 7, 2017		140,930	$	11.7851	$	1,662,283.44
June 8, 2017		126,100	$	11.9519	$	1,508,395.59
June 9, 2017		63,460	$	12.0988	$	768,424.45
June 12, 2017		52,354	$	12.3092	$	644,959.40
June 13, 2017		118,291	$	12.3331	$	1,460,077.64
June 14, 2017		91,051	$	12.3360	$	1,124,119.29
June 15, 2017		1,500	$	12.2493	$	18,388.95
June 16, 2017		100,000	$	12.2205	$	1,223,050.00
June 19, 2017		78,269	$	12.1833	$	954,357.40
June 20, 2017		46,862	$	12.1548	$	570,066.86
June 21, 2017		81,100	$	12.1768	$	988,349.48
Total		3,215,193	$	11.8575	$	38,153,911.99

* Represents the total shares acquired and the average price per share on a given day through multiple open market brokerage transactions on the NYSE in varying share quantities and at varying share prices.

** Aggregate purchase price reflects the inclusion of fees for sales commissions on the various share purchases totaling $29,784.39.

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(c) Except as set forth in this Statement or as previously disclosed in this Schedule 13D, none of the Reporting Persons, or, to the best knowledge of the Reporting Persons, any other person named in Item 2 has engaged in any transaction during the past 60 days in any Common Shares.

(d) To the best knowledge of the Reporting Persons, no one other than the Reporting Persons, or the partners, members, affiliates or shareholders of the Reporting Persons has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Shares acquired.

(e) Not applicable.

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 second paragraph entitled “Equity Securities Purchase Program” in its entirety as follows:

On March 28, 2016, the board of directors of KBS SOR approved and adopted an equity securities purchase program (the “Program”). KBS SOR, through its subsidiaries, acquired the 3,215,193 Common Shares described in Item 5 pursuant to the Program. Under the Program, an investment committee of the Advisor composed of Peter McMillan III and Keith D. Hall will evaluate and approve all of the proposed investments and sales of equity securities acquired under the Program.

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SIGNATURES

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

Dated: June 21, 2017

KBS SOR PROPERTIES LLC
	By: KBS SOR (BVI) Holdings, Ltd., its sole member
		By: KBS Strategic Opportunity Limited Partnership, its sole shareholder
			By KBS Strategic Opportunity REIT, Inc., its sole general partner
			By:	/s/ Peter McMillan III
			Name:	Peter McMillan III
			Title:	President
KBS SOR (BVI) HOLDINGS, LTD.
	By: KBS Strategic Opportunity Limited Partnership, its sole shareholder
		By KBS Strategic Opportunity REIT, Inc., its sole general partner
			By:	/s/ Peter McMillan III
			Name:	Peter McMillan III
			Title:	President
KBS STRATEGIC OPPORTUNITY LIMITED PARTNERSHIP
	By: KBS Strategic Opportunity REIT, Inc., its sole general partner
			By:	/s/ Peter McMillan III
			Name:	Peter McMillan III
			Title:	President
KBS STRATEGIC OPPORTUNITY REIT, INC.
By:	/s/ Peter McMillan III
Name:	Peter McMillan III
Title:	President

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KBS CAPITAL ADVISORS LLC
	By: GKP Holding LLC, a Manager
	By:	/s/ Peter McMillan III
		Peter McMillan III, Manager
	By:	/s/ Keith D. Hall
		Keith D. Hall, Manager
KEITH D. HALL
/s/ Keith D. Hall
PETER MCMILLAN III
/s/ Peter McMillan III

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