UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number: 811-03131

AB SUSTAINABLE GLOBAL THEMATIC FUND, INC.

(Exact name of registrant as specified in charter)

1345 Avenue of the Americas, New York, New York 10105

(Address of principal executive offices) (Zip code)

Joseph J Mantineo

AllianceBernstein L.P.

1345 Avenue of the Americas

New York, New York 10105

(Name and address of agent for service)

Registrant’s telephone number, including area code: (800) 221-5672

Date of fiscal year end: July 31, 2019

Date of reporting period: October 31, 2018

ITEM 1. SCHEDULE OF INVESTMENTS.

AB Sustainable Global Thematic Fund

Portfolio of Investments

October 31, 2018 (unaudited)

Company	Shares		U.S. $ Value
COMMON STOCKS - 96.8%
Health Care - 21.2%
Health Care Equipment & Supplies - 7.4%
Abbott Laboratories		276,370	$	19,052,948
Danaher Corp.		181,973		18,088,116
EssilorLuxottica SA		115,033		15,711,036
West Pharmaceutical Services, Inc.		127,723		13,528,420
				66,380,520
Health Care Providers & Services - 3.5%
Apollo Hospitals Enterprise Ltd.		1,048,600		16,213,919
UnitedHealth Group, Inc.		59,807		15,630,559
				31,844,478
Health Care Technology - 1.6%
Medidata Solutions, Inc. (a)		203,430		14,301,129
Life Sciences Tools & Services - 8.4%
Bio-Rad Laboratories, Inc.-Class A (a)		58,520		15,967,182
Bruker Corp.		506,794		15,877,856
Gerresheimer AG		147,500		10,395,153
ICON PLC (a)		137,970		19,050,898
Tecan Group AG		63,900		14,415,056
				75,706,145
Pharmaceuticals - 0.3%
Vectura Group PLC (a)		3,530,270		3,207,034
				191,439,306
Financials - 17.3%
Banks - 5.7%
Bank Mandiri Persero Tbk PT		20,899,500		9,390,589
Credicorp Ltd.		74,360		16,783,796
HDFC Bank Ltd.		315,390		8,153,991
Svenska Handelsbanken AB-Class A		749,600		8,148,030
Swedbank AB-Class A		380,900		8,568,167
				51,044,573
Capital Markets - 6.2%
Charles Schwab Corp. (The)		356,725		16,494,964
MSCI, Inc.-Class A		150,480		22,629,182
Partners Group Holding AG		23,044		16,406,283
				55,530,429
Consumer Finance - 1.0%
Bharat Financial Inclusion Ltd. (a)		759,608		8,961,880
Insurance - 2.7%
AIA Group Ltd.		2,024,000		15,396,655
Prudential PLC		472,050		9,452,154
				24,848,809
Thrifts & Mortgage Finance - 1.7%
Housing Development Finance Corp., Ltd.		649,483		15,519,921
				155,905,612

Company	Shares		U.S. $ Value
Information Technology - 14.9%
IT Services - 3.2%
Visa, Inc.-Class A		163,285	$	22,508,837
Wirecard AG		35,450		6,631,168
				29,140,005
Semiconductors & Semiconductor Equipment - 4.1%
ams AG (a)(b)		128,915		5,022,174
Infineon Technologies AG		807,313		16,176,043
NVIDIA Corp.		76,099		16,043,952
				37,242,169
Software - 5.1%
Dassault Systemes SE		97,880		12,253,062
Microsoft Corp.		199,130		21,269,075
SailPoint Technologies Holding, Inc. (a)		485,660		12,646,587
				46,168,724
Technology Hardware, Storage & Peripherals - 2.5%
Apple, Inc.		100,739		22,047,737
				134,598,635
Industrials - 13.8%
Aerospace & Defense - 2.2%
Hexcel Corp.		340,349		19,917,224
Building Products - 2.9%
Cie de Saint-Gobain		169,080		6,369,486
Kingspan Group PLC		442,435		19,243,168
				25,612,654
Commercial Services & Supplies - 1.3%
China Everbright International Ltd.		14,173,740		11,338,929
Electrical Equipment - 3.6%
Schneider Electric SE		199,220		14,405,816
Vestas Wind Systems A/S		289,550		18,157,788
				32,563,604
Industrial Conglomerates - 1.5%
Siemens AG		120,524		13,853,850
Machinery - 2.3%
Xylem, Inc./NY		315,128		20,666,094
				123,952,355
Consumer Discretionary - 7.8%
Auto Components - 2.3%
Aptiv PLC		202,602		15,559,834
Delphi Technologies PLC		245,570		5,265,021
				20,824,855
Diversified Consumer Services - 1.7%
Bright Horizons Family Solutions, Inc. (a)		131,220		15,078,490
Internet & Direct Marketing Retail - 3.8%
Amazon.com, Inc. (a)		13,177		21,056,978

Company	Shares		U.S. $ Value
Etsy, Inc. (a)		321,770	$	13,681,660
				34,738,638
				70,641,983
Consumer Staples - 7.5%
Food Products - 4.1%
Kerry Group PLC-Class A		182,570		18,714,311
Nestle SA		213,825		18,051,766
				36,766,077
Household Products - 1.8%
Unicharm Corp.		612,200		16,608,206
Personal Products - 1.6%
Unilever PLC		270,120		14,308,155
				67,682,438
Utilities - 5.4%
Multi-Utilities - 1.2%
Suez		750,860		10,830,629
Water Utilities - 4.2%
American Water Works Co., Inc.		195,911		17,344,001
Aqua America, Inc.		263,630		8,575,884
Beijing Enterprises Water Group Ltd. (a)		22,454,000		11,466,339
				37,386,224
				48,216,853
Materials - 4.0%
Chemicals - 4.0%
Ecolab, Inc.		156,799		24,013,767
Koninklijke DSM NV		136,900		11,952,575
				35,966,342
Communication Services - 2.8%
Interactive Media & Services - 2.8%
Alphabet, Inc.-Class C (a)		15,821		17,035,578
Tencent Holdings Ltd.		236,000		8,085,185
				25,120,763
Real Estate - 2.1%
Equity Real Estate Investment Trusts (REITs) - 1.5%
SBA Communications Corp. (a)		82,790		13,426,055
Real Estate Management & Development - 0.6%
SM Prime Holdings, Inc.		8,406,600		5,314,848
				18,740,903
Total Common Stocks (cost $743,160,041)				872,265,190

Company	Shares		U.S. $ Value
SHORT-TERM INVESTMENTS - 3.0%
Investment Companies - 3.0%
AB Fixed Income Shares, Inc.-Government Money Market Portfolio-Class AB, 2.08% (c)(d)(e) (cost $27,011,255)		27,011,255	$	27,011,255
Total Investments Before Security Lending Collateral for Securities Loaned - 99.8% (cost $770,171,296)				899,276,445
INVESTMENTS OF CASH COLLATERAL FOR SECURITIES LOANED - 0.5%
Investment Companies - 0.5%
AB Fixed Income Shares, Inc.-Government Money Market Portfolio-Class AB, 2.08% (c)(d)(e) (cost $4,630,214)		4,630,214		4,630,214
Total Investments - 100.3% (cost $774,801,510) (f)				903,906,659
Other assets less liabilities - (0.3)%				(2,371,953	)
Net Assets - 100.0%			$	901,534,706

FORWARD CURRENCY EXCHANGE CONTRACTS

Counterparty	Contracts to Deliver (000)		In Exchange For (000)		Settlement Date		Unrealized Appreciation/ (Depreciation)
Bank of America, NA	USD	3,409	RUB	225,797		11/14/18	$	13,612
Bank of America, NA	PHP	608,151	USD	11,100		12/11/18		(276,723	)
Barclays Bank PLC	USD	2,862	PHP	155,836		12/11/18		53,148
Barclays Bank PLC	USD	1,912	INR	143,087		12/13/18		10,181
Barclays Bank PLC	CHF	2,270	USD	2,294		12/14/18		31,365
Barclays Bank PLC	USD	29,620	CAD	38,672		12/14/18		(219,189	)
Barclays Bank PLC	USD	2,986	JPY	333,998		12/14/18		(16,302	)
BNP Paribas SA	TWD	68,032	USD	2,205		12/11/18		1,486
BNP Paribas SA	USD	5,401	INR	398,099		12/13/18		(52,725	)
Citibank, NA	USD	15,977	KRW	18,068,797		11/15/18		(144,378	)
Citibank, NA	INR	3,466,344	USD	49,679		12/13/18		3,111,187
Citibank, NA	CAD	3,705	USD	2,843		12/14/18		26,228
Citibank, NA	CHF	5,195	USD	5,275		12/14/18		95,760
Citibank, NA	EUR	61,631	USD	71,919		12/14/18		1,858,137
Citibank, NA	GBP	1,808	USD	2,384		12/14/18		68,337
Goldman Sachs Bank USA	CHF	2,355	USD	2,370		12/14/18		22,135
Goldman Sachs Bank USA	GBP	4,144	USD	5,415		12/14/18		107,545
Goldman Sachs Bank USA	JPY	247,184	USD	2,199		12/14/18		1,336
Goldman Sachs Bank USA	USD	2,536	JPY	279,522		12/14/18		(49,932	)
Goldman Sachs Bank USA	USD	2,815	MXN	54,520		12/14/18		(147,817	)
JPMorgan Chase Bank, NA	EUR	4,109	USD	4,767		12/14/18		96,300
Morgan Stanley & Co., Inc.	PEN	47,835	USD	14,288		11/15/18		105,133
Morgan Stanley & Co., Inc.	EUR	3,837	USD	4,480		12/14/18		118,456
Morgan Stanley & Co., Inc.	HKD	62,604	USD	7,989		12/14/18		(5,001	)
Morgan Stanley & Co., Inc.	SEK	73,571	USD	8,198		12/14/18		127,315
Morgan Stanley & Co., Inc.	USD	19,414	AUD	27,246		12/14/18		(111,361	)
Morgan Stanley & Co., Inc.	USD	10,366	EUR	8,949		12/14/18		(192,912	)
Morgan Stanley & Co., Inc.	USD	27,474	GBP	21,029		12/14/18		(539,454	)
Morgan Stanley & Co., Inc.	USD	48,361	JPY	5,355,764		12/14/18		(734,529	)

Counterparty	Contracts to Deliver (000)			In Exchange For (000)			Settlement Date		Unrealized Appreciation/ (Depreciation)
Natwest Markets PLC		CHF	4,176		USD	4,242		12/14/18	$	78,818
Standard Chartered Bank		KRW	2,729,010		USD	2,409		11/15/18		17,333
Standard Chartered Bank		USD	1,978		PHP	106,550		12/11/18		14,977
Standard Chartered Bank		USD	12,630		TWD	386,505		12/11/18		(110,386	)
Standard Chartered Bank		JPY	295,616		USD	2,654		12/14/18		25,444
Standard Chartered Bank		USD	1,487		HKD	11,618		12/14/18		(3,179	)
State Street Bank & Trust Co.		CHF	9,111		USD	9,464		12/14/18		380,209
State Street Bank & Trust Co.		EUR	5,536		USD	6,438		12/14/18		145,043
State Street Bank & Trust Co.		USD	3,428		EUR	2,968		12/14/18		(54,073	)
State Street Bank & Trust Co.		USD	1,500		NOK	12,435		12/14/18		(21,997	)
UBS AG		EUR	9,705		USD	11,181		12/14/18		148,214
									$	3,977,741

(a) Non-income producing security.

(b) Represents entire or partial securities out on loan.

(c) Affiliated investments.

(d) The rate shown represents the 7-day yield as of period end.

(e) To obtain a copy of the fund’s shareholder report, please go to the Securities and Exchange Commission’s website at www.sec.gov, or call AB at (800) 227-4618.

(f) As of October 31, 2018, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $187,477,056 and gross unrealized depreciation of investments was $(54,394,166), resulting in net unrealized appreciation of $133,082,890.

Please note: The sector classifications presented herein are based on the Global Industry Classification Standard (GICS) which was developed by Morgan Stanley Capital International and Standard & Poor’s. The components are divided into sector, industry group, and industry sub-indices as classified by the GICS for each of the market capitalization indices in the broad market.

Currency Abbreviations:

AUD	-	Australian Dollar
CAD	-	Canadian Dollar
CHF	-	Swiss Franc
EUR	-	Euro
GBP	-	Great British Pound
HKD	-	Hong Kong Dollar
INR	-	Indian Rupee
JPY	-	Japanese Yen
KRW	-	South Korean Won
MXN	-	Mexican Peso
NOK	-	Norwegian Krone
PEN	-	Peruvian Sol
PHP	-	Philippine Peso
RUB	-	Russian Ruble
SEK	-	Swedish Krona
TWD	-	New Taiwan Dollar
USD	-	United States Dollar

Country Breakdown*

October 31, 2018 (unaudited)

50.8%	United States
6.6%	France
5.4%	Switzerland
5.4%	India
5.2%	Germany
4.2%	Ireland
3.5%	China
3.0%	United Kingdom
2.0%	Denmark
1.9%	Peru
1.9%	Sweden
1.9%	Japan
1.7%	Hong Kong
3.5%	Other
3.0%	Short-Term
100.0%	Total Investments

* All data are as of October 31, 2018. The Fund’s country breakdown is expressed as a percentage of total investments and may vary over time. “Other” country weightings represent 1.3% or less in the following countries: Austria, Indonesia, Netherlands and Philippines.

AB Sustainable Global Thematic Fund

October 31, 2018 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Fund would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. U.S. GAAP establishes a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability (including those valued based on their market values). Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Fund. Unobservable inputs reflect the Fund’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Fund’s own assumptions in determining the fair value of investments)

Where readily available market prices or relevant bid prices are not available for certain equity investments, such investments may be valued based on similar publicly traded investments, movements in relevant indices since last available prices or based upon underlying company fundamentals and comparable company data (such as multiples to earnings or other multiples to equity). Where an investment is valued using an observable input, by pricing vendors, such as another publicly traded security, the investment will be classified as Level 2. If management determines that an adjustment is appropriate based on restrictions on resale, illiquidity or uncertainty, and such adjustment is a significant component of the valuation, the investment will be classified as Level 3. An investment will also be classified as Level 3 where management uses company fundamentals and other significant inputs to determine the valuation.

The following table summarizes the valuation of the Fund’s investments by the above fair value hierarchy levels as of October 31, 2018:

Investments in Securities:	Level 1			Level 2			Level 3			Total
Assets:
Common Stocks:
Health Care	$	131,497,108		$	59,942,198		$	– 0	–	$	191,439,306
Financials		64,061,933			91,843,679			– 0	–		155,905,612
Information Technology		94,516,188			40,082,447			– 0	–		134,598,635
Industrials		59,826,486			64,125,869			– 0	–		123,952,355
Consumer Discretionary		70,641,983			– 0	–		– 0	–		70,641,983
Consumer Staples		18,714,311			48,968,127			– 0	–		67,682,438
Utilities		25,919,885			22,296,968			– 0	–		48,216,853
Materials		24,013,767			11,952,575			– 0	–		35,966,342
Communication Services		17,035,578			8,085,185			– 0	–		25,120,763
Real Estate		13,426,055			5,314,848			– 0	–		18,740,903
Short-Term Investments		27,011,255			– 0	–		– 0	–		27,011,255
Investments of Cash Collateral for Securities Loaned in Affiliated Money Market Fund		4,630,214			– 0	–		– 0	–		4,630,214
Total Investments in Securities		551,294,763			352,611,896	(a)		– 0	–		903,906,659
Other Financial Instruments (b):
Assets:
Forward Currency Exchange Contracts		– 0	–		6,657,699			– 0	–		6,657,699
Liabilities:
Forward Currency Exchange Contracts		– 0	–		(2,679,958	)		– 0	–		(2,679,958	)
Total (c)	$	551,294,763		$	356,589,637		$	– 0	–	$	907,884,400

(a) A significant portion of the Fund’s foreign equity investments are categorized as Level 2 investments since they are valued using fair value prices based on third party vendor modeling tools to the extent available.

(b) Other financial instruments are derivative instruments, such as futures, forwards and swaps, which are valued at the unrealized appreciation/(depreciation) on the instrument. Other financial instruments may also include swaps with upfront premiums, options written and swaptions written which are valued at market value.

(c) There were no transfers between any levels during the reporting period.

The Fund recognizes all transfers between levels of the fair value hierarchy assuming the financial instruments were transferred at the beginning of the reporting period.

The Adviser established the Valuation Committee (the “Committee”) to oversee the pricing and valuation of all securities held in the Fund. The Committee operates under pricing and valuation policies and procedures established by the Adviser and approved by the Board, including pricing policies which set forth the mechanisms and processes to be employed on a daily basis to implement these policies and procedures. In particular, the pricing policies describe how to determine market quotations for securities and other instruments. The Committee’s responsibilities include: 1) fair value and liquidity determinations (and oversight of any third parties to whom any responsibility for fair value and liquidity determinations is delegated), and 2) regular monitoring of the Adviser’s pricing and valuation policies and procedures and modification or enhancement of these policies and procedures (or recommendation of the modification of these policies and procedures) as the Committee believes appropriate.

The Committee is also responsible for monitoring the implementation of the pricing policies by the Adviser’s Pricing Group (the “Pricing Group”) and any third party which performs certain pricing functions in accordance with the pricing policies. The Pricing Group is responsible for the oversight of the third party on a day-to-day basis. The Committee and the Pricing Group perform a series of activities to provide reasonable assurance of the accuracy of prices including: 1) periodic vendor due diligence meetings, review of methodologies, new developments and process at vendors, 2) daily comparison of security valuation versus prior day for all securities that exceeded established thresholds, and 3) daily review of unpriced, stale, and variance reports with exceptions reviewed by senior management and the Committee.

In addition, several processes outside of the pricing process are used to monitor valuation issues including: 1) performance and performance attribution reports are monitored for anomalous impacts based upon benchmark performance, and 2) portfolio managers review all portfolios for performance and analytics (which are generated using the Adviser’s prices).

A summary of the Fund’s transactions in AB mutual funds for the three months ended October 31, 2018 is as follows:

Fund	Market Value 7/31/18 (000)		Purchases at Cost (000)		Sales Proceeds (000)		Market Value 10/31/18 (000)		Dividend Income (000)
Government Money Market Portfolio	$	42,108	$	60,595	$	75,692	$	27,011	$	185
Government Money Market Portfolio*		270		18,546		14,186		4,630		39
Total	$	42,378	$	79,141	$	89,878	$	31,641	$	224

* Investments of cash collateral for securities lending transactions

ITEM 2. CONTROLS AND PROCEDURES.

(a) The registrant’s principal executive officer and principal financial officer have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended) are effective at the reasonable assurance level based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of this document.

(b) There were no significant changes in the registrant’s internal control over financial reporting that could significantly affect these controls subsequent to the date of their evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.

ITEM 3. EXHIBITS.

The following exhibits are attached to this Form N-Q:

EXHIBIT NO.	DESCRIPTION OF EXHIBIT
11 (a) (1)	Certification of Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
11 (a) (2)	Certification of Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant): AB Sustainable Global Thematic Fund, Inc.

By:	/s/    Robert M. Keith
	Robert M. Keith
	President
Date:	December 24, 2018

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By:	/s/    Robert M. Keith
	Robert M. Keith
	President
Date:	December 24, 2018
By:	/s/    Joseph J. Mantineo
	Joseph J. Mantineo
	Treasurer and Chief Financial Officer
Date:	December 24, 2018