Subadvisory Agreement between SunAmerica and QS Investors, LLC

This SUBADVISORY AGREEMENT (“Agreement”) is dated as of August 16, 2017, by and between SUNAMERICA ASSET MANAGEMENT, LLC, a Delaware limited liability company (the “Adviser”), and QS INVESTORS, LLC, a Delaware limited liability company (the “Subadviser”).

WHEREAS, the Adviser and SunAmerica Series Trust, a Massachusetts business trust (the “Trust”), have entered into an Investment Advisory and Management Agreement dated as of January 1, 1999, as amended from time to time (the “Advisory Agreement”), pursuant to which the Adviser has agreed to provide investment management, advisory and administrative services to the Trust, and pursuant to which the Adviser has the express authority to delegate one or more of its duties to a subadviser pursuant to a written subadvisory agreement; and

WHEREAS, the Trust is registered under the Investment Company Act of 1940, as amended (the “Act”), as an open-end management investment company and may issue shares of beneficial interest, without par value, in separately designated portfolios representing separate funds with their own investment objectives, policies and purposes; and

WHEREAS, the Subadviser is engaged in the business of rendering investment advisory services and is registered as an investment adviser under the Investment Advisers Act of 1940, as amended (the “Advisers Act”);

WHEREAS, the Adviser desires to retain the Subadviser to furnish investment advisory services to the investment portfolio(s) of the Trust listed on Schedule A attached hereto (each, a “Portfolio,” and collectively, the “Portfolio(s)”), and the Subadviser is willing to furnish such services; and

WHEREAS, the Adviser desires the Subadviser to engage, pursuant to one or more written agreements (each, a “Subadvisory Affiliate Agreement”), one or more affiliates that the Subadviser controls, is controlled by or is under common control with (each, a “Subadviser Affiliate,” and collectively, the “Subadviser Affiliates”), that are registered as investment advisers under the Advisers Act, to assist the Subadviser in discharging its obligations under this Agreement on the terms hereinafter set forth.

1. Duties of the Subadviser. The Adviser hereby engages the services of the Subadviser in furtherance of the Advisory Agreement. Pursuant to this Agreement and subject to the oversight and review of the Adviser, the Subadviser will manage the investment and reinvestment of the assets of each Portfolio. The Subadviser will determine, in its discretion and subject to the oversight and review of the Adviser, the securities and other investments or

instruments to be purchased or sold, will provide the Adviser with records concerning its activities which the Adviser or the Trust is required to maintain in accordance with Rule 31a-1 and Rule 31a-2 under the Act, and will render reports to the Adviser and to officers and Trustees of the Trust, at such times and in such detail as shall be reasonable, concerning its discharge of the foregoing responsibilities. The Subadviser shall discharge the foregoing responsibilities subject to the control of the officers and the Trustees of the Trust and in compliance with such policies as the Trustees of the Trust may from time to time establish, as provided promptly and in writing to the Subadviser from time to time, and in compliance with (a) the objectives, policies, restrictions and limitations for the Portfolio(s) as set forth in the Trust’s current prospectus and statement of additional information, as provided promptly by the Adviser to the Subadviser; and (b) applicable laws and regulations.

The Subadviser represents and warrants to the Adviser that it will manage the Portfolio(s) at all times (a) in compliance with all applicable federal and state laws, including securities, commodities and banking laws, governing its operations and investments; (b) the provisions of the Act and the rules and regulations adopted thereunder; (c) the objectives, policies, restrictions and limitations for the Portfolio(s) as set forth in the Trust’s current prospectus and statement of additional information (together, the “Registration Statement”) as most recently provided by the Adviser to the Subadviser; and (d) the policies and procedures as adopted by the Trustees of the Trust provided in writing to the Subadviser. The Subadviser further represents and warrants to the Adviser that it will manage each Portfolio in compliance with Section 851(b)(2) and (3) of Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”) and Section 817(h) of Subchapter L of the Code, solely with respect to the assets of the Portfolio(s) which are under its management and based solely on information provided by the custodian of the Portfolio(s). Furthermore, the Adviser will work in conjunction with the Subadviser to undertake any corrective action that may be required as advised by a Portfolio’s tax advisor in a timely manner following quarter end in order to allow the Subadviser to resolve the issue within the 30-day cure period under the Code.

The Subadviser further represents and warrants that to the extent that any statements or omissions made in any Registration Statement for the shares of the Trust, or any amendment or supplement thereto, are made in reliance upon and in conformity with information furnished by the Subadviser in writing expressly for use therein, such Registration Statement and any amendments or supplements thereto will, when they become effective, conform in all material respects to the requirements of the Securities Act of 1933 and the rules and regulations of the Securities and Exchange Commission (“SEC”) thereunder (the “1933 Act”) and the Act and will not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading.

The Subadviser agrees: (a) to maintain a level of errors and omissions or professional liability insurance coverage that, at all times during the course of this Agreement, is appropriate given the nature of its business, and (b) from time to time and upon reasonable request, to supply evidence of such coverage to the Adviser.

The Subadviser accepts such employment and agrees, at its own expense, to render the services set forth herein and to provide the office space, furnishings, equipment and personnel required by it to perform such services on the terms and for the compensation provided in this Agreement. The Subadviser shall not be responsible for the other expenses of a Portfolio, including, without limitation, fees of a Portfolio’s independent public accountants, transfer agent, custodian and other service providers who are not employees of the Subadviser; brokerage commissions and other transaction-related expenses; tax-reporting; taxes levied against a Portfolio or any of its property; and interest expenses of a Portfolio.

The Subadviser also represents and warrants that in furnishing services hereunder, the Subadviser will not consult with any other subadviser of the Portfolio(s) or other series of the Trust, to the extent any other subadvisers are engaged by the Adviser (and not the Subadviser), or any other subadvisers to other investment companies that are under common control with the Trust, concerning transactions of the Portfolio(s) in securities or other assets, other than for purposes of complying with the conditions of paragraphs (a) and (b) of rule 12d3-1 under the Act.

The Subadviser may delegate certain of the Subadviser’s duties hereunder to a Subadviser Affiliate, provided that any such arrangements are entered into in accordance with all applicable requirements of the Act and the terms of any applicable exemptive orders. The Subadviser acknowledges and agrees that any such delegation by the Subadviser shall in no way relieve the Subadviser of its duties and obligations hereunder, all such duties and obligations hereunder shall remain the sole responsibility of the Subadviser as if no such delegation had occurred, and the Subadviser, in accordance with Section 9 hereof, shall be fully responsible and liable for all actions or omissions to act by any Subadviser Affiliate. The Subadviser shall notify the Adviser promptly in writing at least seventy-five (75) days in advance in the event that a Subadvisory Affiliate Agreement is to be materially amended. The Subadviser acknowledges and agrees that the Subadviser Affiliates are not parties to this Agreement and are not intended beneficiaries of this Agreement and that they have no rights under this Agreement.

The Adviser acknowledges that the Subadviser and its delegates do not hold client money and/or custody assets.

2. Portfolio Transactions. The Subadviser (and any Subadviser Affiliate that is engaged pursuant to the terms of a Subadvisory Affiliate Agreement) is responsible for decisions, and is hereby authorized, to buy or sell securities and other investments or instruments for the Portfolio(s), broker-dealers, futures commission merchants’ and other counterparties selection, and negotiation of brokerage commission and futures commission merchants’ rates. As a general matter, in executing Portfolio transactions, the Subadviser may employ or deal with such broker-dealers or futures commission merchants as may, in the Subadviser’s best judgment, provide prompt and reliable execution of the transactions at favorable prices and reasonable commission rates. In selecting such broker-dealers or futures commission merchants, the Subadviser shall consider all relevant factors including price (including the applicable brokerage commission, dealer spread or futures commission merchant rate), the size of the order, the nature

of the market for the security or other investment, the timing of the transaction, the reputation, experience and financial stability of the broker-dealer or futures commission merchant involved, the quality of the service, the difficulty of execution, the execution capabilities and operational facilities of the firm involved, and, in the case of securities, the firm’s risk in positioning a block of securities. Subject to such policies as the Trustees may determine and consistent with Section 28(e) of the Securities Exchange Act of 1934, as amended (the “1934 Act”), the Subadviser shall not be deemed to have acted unlawfully or to have breached any duty created by this Agreement or otherwise solely by reason of the Subadviser’s having caused a Portfolio to pay a member of an exchange, broker or dealer an amount of commission for effecting a securities transaction in excess of the amount of commission another member of an exchange, broker or dealer would have charged for effecting that transaction, if the Subadviser determines in good faith that such amount of commission was reasonable in relation to the value of the brokerage and research services provided by such member of an exchange, broker or dealer viewed in terms of either that particular transaction or the Subadviser’s overall responsibilities with respect to such Portfolio and to other clients as to which the Subadviser exercises investment discretion. In accordance with Section 11(a) of the 1934 Act and Rule 11a2-2(T) thereunder, and subject to any other applicable laws and regulations including Section 17(e) of the Act and Rule 17e-1 thereunder, the Subadviser may engage its affiliates, the Adviser and its affiliates or any other subadviser to the Trust and its respective affiliates, as broker-dealers or futures commission merchants to effect Portfolio transactions in securities and other investments for a Portfolio. The Subadviser will promptly communicate to the Adviser and to the officers and the Trustees of the Trust such information relating to Portfolio transactions as they may reasonably request. To the extent consistent with applicable law, the Subadviser may aggregate purchase or sell orders for the Portfolio(s) with contemporaneous purchase or sell orders of other clients of the Subadviser or its affiliated persons. In such event, allocation of the securities so purchased or sold, as well as the expenses incurred in the transaction, will be made by the Subadviser in the manner the Subadviser determines to be equitable and consistent with its and its affiliates’ fiduciary obligations to the Portfolio and to such other clients. The Adviser hereby acknowledges that such aggregation of orders may not result in more favorable pricing or lower brokerage commissions in all instances.

Subject to this Section 2, the Subadviser and any Subadviser Affiliates shall have the express authority to negotiate, open, continue and terminate brokerage accounts and other brokerage arrangements with respect to all Portfolio transactions entered into by the Subadviser or any Subadviser Affiliates on behalf of the Portfolio(s).

3. Compensation of the Subadviser. The Subadviser shall not be entitled to receive any payment from the Trust and shall look solely and exclusively to the Adviser for payment of all fees for the services rendered, facilities furnished and expenses paid by it hereunder. As full compensation for the Subadviser under this Agreement, the Adviser agrees to pay to the Subadviser a fee at the annual rates set forth in Schedule A hereto with respect to the assets managed by the Subadviser for each Portfolio listed thereon. Such fee shall be accrued daily and paid monthly as soon as practicable after the end of each month (i.e., the applicable annual fee rate divided by 365 applied to each prior day’s net assets in order to calculate the daily accrual).

For purposes of calculating the Subadviser’s fee, the average daily net asset value of a Portfolio shall mean the average daily net assets for which the Subadviser provides advisory services, and shall be determined by taking an average of all determinations of such net asset value during the month. If the Subadviser shall provide its services under this Agreement for less than the whole of any month, the foregoing compensation shall be prorated.

4. Reports. The Adviser agrees to furnish to the Subadviser current prospectuses, statements of additional information, proxy statements, reports of shareholders, certified copies of their financial statements (collectively, “Trust Reports”) as soon as practicable after such Trust Reports are available to the public, and such other information with regard to their affairs and that of the Trust as the Subadviser may reasonably request. Adviser will provide Subadviser access to a list of the affiliates of Adviser or the Portfolio(s) to which investment restrictions apply, which list will specifically identify (a) all companies in which the Portfolio(s) may not invest, together with ticker symbols and/or CUSIP numbers for all such companies, and (b) any affiliated brokers and any restrictions that apply to the use of those brokers by the Portfolio(s). Adviser will notify Subadviser any time a change to such list is made.

The Adviser has delivered or will deliver to the Subadviser current copies of the Trust’s Prospectus and Statement of Additional Information, and all applicable supplements thereto. The Subadviser agrees to furnish to the Adviser and/or the Chief Compliance Officer of the Trust and/or the Adviser (the “CCO”) with such information, certifications and reports as such persons may reasonably deem appropriate or may request from the Subadviser regarding the Subadviser’s and the Subadviser Affiliates’ compliance with applicable law, including: (i) Rule 206(4)-7 of the Advisers Act; (ii) the Federal Securities Laws, as defined in Rule 38a-1 under the Act; (iii) the Commodity Exchange Act; and (iv) any and all other laws, rules and regulations, whether foreign or domestic, in each case, applicable at any time to the operations of the Subadviser with respect to the provision of its services under this Agreement. The Subadviser shall make its officers and employees (including its CCO) who are responsible for the Portfolio available, upon reasonable notice to the Subadviser, to the Adviser and/or the CCO from time to time to examine and review the Subadviser’s and the Subadviser Affiliates’ compliance program and adherence thereto.

5. Status of the Subadviser. The services of the Subadviser to the Adviser and the Trust are not to be deemed exclusive, and the Subadviser shall be free to render similar services to others so long as its services to the Trust are not impaired thereby. The Subadviser shall be deemed to be an independent contractor and shall, unless otherwise expressly provided or authorized, have no authority to act for or represent the Trust in any way or otherwise be deemed an agent of the Trust.

6. Proxy Voting. The Adviser acknowledges the Subadviser or any Subadviser Affiliates will have no responsibility to vote proxies. The Adviser will vote proxies relating to the Portfolio’s securities. The Adviser will vote all such proxies in accordance with such proxy voting guidelines and procedures adopted by the Board of Trustees. The Adviser may, on certain non-routine matters, consult with the Subadviser before voting proxies relating to the Portfolio’s

securities. The Adviser will instruct the custodian and other parties providing services to the Trust promptly to forward to the proxy voting service copies of all proxies and shareholder communications relating to securities held by each Portfolio (other than materials relating to legal proceedings).

7. Certain Records. The Subadviser hereby undertakes and agrees to maintain, in the form and for the period required by Rule 31a-2 under the Act, all records relating to the investments of the Portfolio(s) that are required to be maintained by the Trust pursuant to the requirements of Rule 31a-1 of the Act. Any records required to be maintained and preserved pursuant to the provisions of Rule 31a-1 and Rule 31a-2 promulgated under the Act which are prepared or maintained by the Subadviser on behalf of the Trust will be provided as soon as reasonably practicable to the Trust or the Adviser upon request.

The Subadviser agrees that all accounts, books and other records maintained and preserved by it, and related to the Portfolio(s), as required hereby shall be subject at any time, and from time to time, to such reasonable periodic, special and other examinations by the SEC, the Trust’s auditors, the Trust or any representative of the Trust, the Adviser, or any governmental agency or other instrumentality having regulatory authority over the Trust.

8. Reference to the Subadviser. None of the Trust, the Portfolio(s) or the Adviser or any affiliate or agent thereof shall make reference to or use the name or logo of the Subadviser or any of its affiliates in any advertising or promotional materials without the prior written approval of the Subadviser, prior to first use, which approval shall not be unreasonably withheld. Additionally, if substantive changes are made to such materials thereafter, the Portfolio(s) shall furnish to the Subadviser the updated material for approval prior to first use, which approval shall not be unreasonably withheld. Upon the termination of this Agreement, none of the Trust, the Portfolio(s) or the Adviser or any affiliate or agent thereof shall make reference to or use the name or logo of the Subadviser or any of its affiliates in any advertising or promotional materials. Notwithstanding the above, for so long as the Subadviser serves as subadviser to the Portfolio(s), the Trust, the Portfolio(s) and the Adviser may use the name or logo of the Subadviser or any of its affiliates (including but not limited to any Subadviser Affiliates) in the Registration Statement, shareholder reports, and other filings with the SEC, or after the Subadviser ceases to serve as subadviser, if such usage is solely for the purpose of meeting a disclosure obligation under laws, rules, regulations, statutes and codes, whether state or federal, without the Subadviser’s prior written consent.

9. Liability of the Subadviser. (a) In the absence of willful misfeasance, bad faith, gross negligence or reckless disregard of obligations or duties (“disabling conduct”) hereunder on the part of the Subadviser (and its officers, members, directors/trustees, agents, employees, controlling persons, shareholders and any other person or entity affiliated with the Subadviser) the Subadviser shall not be subject to liability to the Adviser (and its officers, directors/trustees, agents, employees, controlling persons, shareholders and any other person or entity affiliated with the Adviser) or to the Trust (and its officers, directors/trustees, agents, employees, controlling persons, shareholders and any other person or entity affiliated with the Trust) for any

act or omission in the course of, or connected with, rendering services hereunder, including without limitation, any error of judgment or mistake of law or for any loss suffered by any of them in connection with the matters to which this Agreement relates, except to the extent specified in Section 36(b) of the Act concerning loss resulting from a breach of fiduciary duty with respect to the receipt of compensation for services. Except for such disabling conduct, the Adviser shall indemnify the Subadviser (and its officers, members, directors, partners, agents, employees, controlling persons, shareholders and any other person or entity affiliated with the Subadviser) from any and all losses, claims, damages, liabilities or litigation (including reasonable legal and other expenses) arising from Subadviser’s conduct under this Agreement.

(b) The Subadviser agrees to indemnify and hold harmless the Adviser (and its officers, directors/trustees, agents, employees, controlling persons, shareholders and any other person or entity affiliated with the Adviser) and/or the Trust (and its officers, directors/trustees, agents, employees, controlling persons, shareholders and any other person or entity affiliated with the Trust) against any and all losses, claims, damages, liabilities or litigation (including reasonable legal and other expenses), to which the Adviser and/or the Trust and their affiliates or such directors/trustees, officers or controlling person may become subject under the Act, the 1933 Act, under other statutes, common law or otherwise, which arise from the Subadviser’s disabling conduct, including but not limited to any material failure by the Subadviser to comply with the provisions and representations and warranties set forth in Section 1 of this Agreement; provided, however, that in no case is the Subadviser’s indemnity in favor of any person deemed to protect such other persons against any liability to which such person would otherwise be subject by reasons of willful misfeasance, bad faith, or gross negligence in the performance of his, her or its duties or by reason of his, her or its reckless disregard of obligations and duties under this Agreement.

10. Term of the Agreement. This Agreement shall continue in full force and effect with respect to each Portfolio until two (2) years from the date hereof, and from year to year thereafter so long as such continuance is specifically approved at least annually (i) by the vote of a majority of those Trustees of the Trust who are not parties to this Agreement or interested persons of any such party, cast in person at a meeting called for the purpose of voting on such approval, and (ii) by the Trustees of the Trust or by vote of a majority of the outstanding voting securities of the Portfolio voting separately from any other series of the Trust.

With respect to a Portfolio, this Agreement may be terminated at any time, without payment of a penalty by the Portfolio or the Trust, by vote of a majority of the Trustees, or by vote of a majority of the outstanding voting securities (as defined in the Act) of the Portfolio, voting separately from any other series of the Trust, or by the Adviser, on not less than thirty (30) nor more than sixty (60) days’ written notice to the Subadviser. With respect to a Portfolio, this Agreement may be terminated by the Subadviser at any time, without the payment of any penalty, on ninety (90) days’ written notice to the Adviser and the Trust. The termination of this Agreement with respect to a Portfolio or the addition of a Portfolio to Schedule A hereto (in the manner required by the Act) shall not affect the continued effectiveness of this Agreement with respect to each other Portfolio subject hereto. This Agreement shall automatically terminate in the event of its assignment (as defined by the Act).

This Agreement will terminate in the event that the Advisory Agreement by and between the Trust and the Adviser is terminated.

11. Severability. If any provision of this Agreement shall be held or made invalid by a court decision, statute, rule or otherwise, the remainder of this Agreement shall not be affected thereby.

12. Amendments. This Agreement may be amended by mutual consent in writing, but the consent of the Trust must be obtained in conformity with the requirements of the Act.

13. Governing Law. This Agreement shall be construed in accordance with the laws of the State of New York and the applicable provisions of the Act. To the extent the applicable laws of the State of New York, or any of the provisions herein, conflict with the applicable provisions of the Act, the latter shall control.

14. Legal Matters. The Subadviser will not take any action or render advice involving legal action on behalf of the Trust with respect to securities or other investments held in a Portfolio or the issuers thereof, which become the subject of legal notices or proceedings, including securities class actions and bankruptcies.

15. Personal Liability. The Declaration of the Trust establishing the Trust (the “Declaration”), is on file in the office of the Secretary of the Commonwealth of Massachusetts, and, in accordance with that Declaration, no Trustee, shareholder, officer, employee or agent of the Trust shall be held to any personal liability, nor shall resort be had to their private property for satisfaction of any obligation or claim or otherwise in connection with the affairs of the Trust, but the “Trust Property,” as defined in the Declaration, only shall be liable.

16. Separate Series. Pursuant to the provisions of the Declaration, each Portfolio is a separate series of the Trust, and all debts, liabilities, obligations and expenses of a particular Portfolio shall be enforceable only against the assets of that Portfolio and not against the assets of any other Portfolio or of the Trust as a whole.

17. Confidentiality. Neither party will disclose, or use any records or information obtained pursuant to this Agreement in any manner whatsoever except as expressly authorized in this Agreement or as reasonably required to execute transactions on behalf of the Portfolio(s) or to advise on the Portfolio(s), and will keep confidential any non-public information obtained directly as a result of this service relationship. A receiving party shall disclose such non-public information only if the other party has authorized such disclosure by prior written consent, or if such information is or hereafter otherwise is known by disclosing party or has been disclosed, directly or indirectly, by the disclosing party to others, becomes ascertainable from public or published information or trade sources, or if such disclosure is expressly required or requested by

applicable federal or state regulatory authorities, or to the extent such disclosure is reasonably required by auditors or attorneys of the disclosing party in connection with the performance of their professional services or as may otherwise be contemplated by this Agreement. Notwithstanding the foregoing, the Subadviser may disclose the total return earned by the Portfolio(s) and may include such total return in the calculation of composite performance information.

18. Representations. By execution of this Agreement, Subadviser represents that it is duly registered as an investment adviser with the SEC pursuant to the Advisers Act and that it has electronically provided to the Adviser Part 2A of its registration on Form ADV prior to signing this Agreement.

19. Use of the Services of Others. In rendering the services required under this Agreement, Subadviser may, consistent with applicable law from time to time, employ, delegate, or associate with itself such affiliated or unaffiliated person or persons as it believes reasonably necessary to assist it in carrying out its obligations under this Agreement; provided, however, that any such delegation, notwithstanding the engagement of the Subadvisory Affiliates, shall not involve any such person serving as an “adviser” to the Portfolio within the meaning of the 1940 Act. Subadviser shall remain liable to Adviser for the performance of Subadviser’s and the Subadviser’s Affiliates’ obligations hereunder, and Adviser shall not be responsible for any fees that any such person may charge to Subadviser for such services.

20. Force Majeure. Notwithstanding anything in this Subadvisory Agreement to the contrary, Subadviser shall not be responsible or liable for its failure to perform under this Subadvisory Agreement or for any losses to the Portfolio(s) resulting from any event beyond the control of Subadviser, its Subadviser Affiliates, or its agents, including but not limited to, nationalization, strikes, expropriation, devaluation, seizure, or similar action by any governmental authority, de facto or de jure; or enactment, promulgation, imposition or enforcement by any such governmental authority of currency restrictions, exchange controls, levies or other charges affecting the assets of the Portfolio(s); or any order or regulation of any banking or securities industry, including changes in market rules and market conditions affecting the execution or settlement of transactions; or acts of war, terrorism, insurrection or revolution; or acts of God, or any other similar event.

21. Notices. All notices shall be in writing and deemed properly given when delivered or mailed by United States certified or registered mail, return receipt requested, postage prepaid, addressed as follows:

IN WITNESS WHEREOF, the parties have caused their respective duly authorized officers to execute this Agreement as of the date first above written.


SUNAMERICA ASSET MANAGEMENT, LLC

By:		/s/ Peter A. Harbeck
Name:		Peter A. Harbeck
Title:		President and Chief Executive Officer

QS INVESTORS, LLC

By:		/s/ Marco Veissid
Name:		Marco Veissid
Title:		Head of Relationship Management


Subadviser:		QS Investors, LLC
		880 Third Avenue, 7^th Floor
		New York, NY 10022
		Attention: U.S. Subadvisory Team


Adviser:		SunAmerica Asset Management, LLC
		Harborside 5
		185 Hudson Street, Suite 3300
		Jersey City, NJ 07311
		Attention: Gregory N. Bressler
		Senior Vice President and General Counsel