SUB-ADVISORY AGREEMENT VOYA SERIES FUND, INC.

(d)(2)

SUB-ADVISORY AGREEMENT

VOYA SERIES FUND, INC.

AGREEMENT, effective as of November 18, 2014, between Voya Investments, LLC, an Arizona limited liability company (the “Manager”), and Voya Investment Management Co. LLC, a Delaware limited liability company (the “Sub-Adviser”).

WHEREAS, Voya Series Fund, Inc. (the “Company”) is registered under the Investment Company Act of 1940, as amended (the “1940 Act”), as an open-end, management investment company; and

WHEREAS, the Company is authorized to issue separate series, each series having its own investment objective or objectives, policies, and limitations; and

WHEREAS, the Company may offer shares of additional series in the future; and

WHEREAS, pursuant to an Investment Management Agreement, effective as of November 18, 2014 (the “Investment Management Agreement”), a copy of which has been provided to the Sub-Adviser, the Company has retained the Manager to render advisory and management services with respect to certain of the Company’s series; and

WHEREAS, pursuant to authority granted to the Manager in the Investment Management Agreement, the Manager wishes to retain the Sub-Adviser to furnish investment advisory services to one or more of the series of the Company, and the Sub-Adviser is willing to furnish such services to the Company and the Manager.

NOW, THEREFORE, in consideration of the premises and the promises and mutual covenants herein contained, it is agreed between the Manager and the Sub-Adviser as follows:

1. Appointment. The Manager hereby appoints the Sub-Adviser to act as the investment adviser and manager to the series of the Company set forth on Schedule A hereto (the “Series”) for the periods and on the terms set forth in this Agreement. The Sub-Adviser accepts such appointment and agrees to furnish the services herein set forth for the compensation herein provided. To the extent that the Sub-Adviser is not the only person providing investment advisory services to a Series, the term “Series” shall be interpreted for purposes of this Agreement to include only those assets of the Series over which the Sub-Adviser is directed by the Manager to provide investment advisory services.

In the event the Company designates one or more series (other than the Series) with respect to which the Manager wishes to retain the Sub-Adviser to render investment advisory services hereunder, it shall notify the Sub-Adviser in writing. If the Sub-Adviser is willing to render such services, it shall notify the Manager in writing, whereupon such series shall become a Series hereunder, and be subject to this Agreement. The Manager and the Sub-Adviser shall execute an amended Schedule A.

2. Sub-Adviser Duties. Subject to the supervision of the Company’s Board of Directors and the Manager, the Sub-Adviser will provide a continuous investment program for each Series’

portfolio and determine in its discretion the composition of the assets of each Series’ portfolio, including determination of the purchase, retention, or sale of the securities, cash, and other investments contained in the portfolio. The Sub-Adviser will provide investment research and conduct a continuous program of evaluation, investment, sales, and reinvestment of each Series’ assets by determining the securities and other investments that shall be purchased, entered into, sold, closed, or exchanged for the Series, when these transactions should be executed, and what portion of the assets of the Series should be held in the various securities and other investments in which it may invest. To the extent permitted by the investment policies of each Series, the Sub-Adviser shall make decisions for the Series as to foreign currency matters and make determinations as to and execute and perform foreign currency exchange contracts on behalf of the Series. The Sub-Adviser will provide the services under this Agreement in accordance with each Series’ investment objective or objectives, policies, and restrictions as stated in the Company’s registration statement under the Securities Act of 1933, as amended (the “1933 Act”) and the 1940 Act, as may be amended or supplemented from time to time (the “Registration Statement”) filed with the U.S. Securities and Exchange Commission (the “SEC”), as amended, copies of which shall be sent to the Sub-Adviser by the Manager prior to the commencement of this Agreement and promptly following any such amendment. The Sub-Adviser further agrees as follows:

(a)                                 The Sub-Adviser will conform with the 1940 Act and all rules and regulations thereunder, all other applicable federal and state laws and regulations, with any applicable procedures adopted by the Company’s Board of Directors of which the Sub-Adviser has been sent a copy, and the provisions of the Registration Statement, of which the Sub-Adviser has received a copy, and with the Manager’s portfolio manager operating policies and procedures as in effect on the date hereof, as such policies and procedures may be revised or amended by the Manager and agreed to by the Sub-Adviser. In carrying out its duties under the Sub-Adviser Agreement, the Sub-Adviser will comply with the following policies and procedures:

(i)                                     The Sub-Adviser will (1) manage each Series so that it meets the income and asset diversification requirements of Section 851 of the Internal Revenue Code of 1986, as amended (the “Code”), and (2), if applicable, manage each Series so that no action or omission on the part of the Sub-Adviser shall cause a Series to fail to comply with the diversification requirements of Section 817(h) of the Code, and the regulations issued thereunder.

(ii)                                  The Sub-Adviser will have no duty to vote any proxy solicited by or with respect to the issuers of securities in which assets of the Series are invested in connection with annual and special meetings of equity stockholders, provided however, that the Sub-Adviser retains responsibility to vote or abstain from voting all solicitations with respect to non-equity portfolio securities and all portfolio securities for matters with regard to bankruptcy or related plans of reorganization unless the Manager gives the Sub-Adviser written instructions to the contrary. The Sub-Adviser will immediately forward any proxy it receives on behalf of the Company solicited by or with respect to the issuers of securities in which assets of the Series are invested to the Manager or to any agent of the Manager designated by the Manager in writing.

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The Sub-Adviser will make appropriate personnel reasonably available for consultation for the purpose of reviewing with representatives of the Manager and/or the Board any proxy solicited by or with respect to the issuers of securities in which assets of the Series are invested. Upon request, the Sub-Adviser will submit a written voting recommendation to the Manager for such proxies. In making such recommendations, the Sub-Adviser shall use its good faith judgment to act in the best interests of the Series. The Sub-Adviser shall disclose to the best of its knowledge any conflict of interest with the issuers of securities that are the subject of such recommendation including whether such issuers are clients or are being solicited as clients of the Sub-Adviser or of its affiliates.

(iii)                               In connection with the purchase and sale of securities for each Series, the Sub-Adviser will arrange for the transmission to the custodian and portfolio accounting agent for the Series on a daily basis, such confirmation, trade tickets, and other documents and information, including, but not limited to, Cusip, Sedol, or other numbers that identify securities to be purchased or sold on behalf of the Series, as may be reasonably necessary to enable the custodian and portfolio accounting agent to perform its administrative and recordkeeping responsibilities with respect to the Series. With respect to portfolio securities to be settled through the Depository Trust Company, the Sub-Adviser will arrange for the prompt transmission of the confirmation of such trades to the Company’s custodian and portfolio accounting agent.

(iv)                              The Sub-Adviser will assist the custodian and portfolio accounting agent for the Company in determining or confirming, consistent with the procedures and policies stated in the Registration Statement for the Company or adopted by the Board of Directors, the value of any portfolio securities or other assets of the Series for which the custodian and portfolio accounting agent seeks assistance from or identifies for review by the Sub-Adviser. The parties acknowledge that the Sub-Adviser is not a custodian of the Series’ assets and will not take possession or custody of such assets.

(v)                                 The Sub-Adviser will provide the Manager, no later than the 10th business day following the end of each Series’ semi-annual period and fiscal year, a letter to shareholders (to be subject to review and editing by the Manager) containing a discussion of those factors referred to in Item 27(b)(7) of 1940 Act Form N-1A (or similar section in effect from time to time) in respect of both the prior quarter and the fiscal year to date.

(vi)                              The Sub-Adviser will complete and deliver to the Manager a written compliance checklist in a form provided by the Manager for each month by the 10th business day of the following month.

(b)                                 The Sub-Adviser will make available to the Company and the Manager, promptly upon request, any of the Series’ investment records and ledgers maintained by the Sub-Adviser (which shall not include the records and ledgers maintained by the custodian or portfolio accounting agent for the Company) as are necessary to assist the

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Company and the Manager to comply with requirements of the 1940 Act and the Investment Advisers Act of 1940, as amended (the “Advisers Act”), as well as other applicable laws. The Sub-Adviser will furnish to regulatory authorities having the requisite authority any information or reports in connection with such services in respect to the Series which may be requested in order to ascertain whether the operations of the Company are being conducted in a manner consistent with applicable laws and regulations.

(c)                                  The Sub-Adviser will provide reports to the Company’s Board of Directors for consideration at meetings of the Board of Directors on the investment program for each Series and the issuers and securities represented in each Series’ portfolio, and will furnish the Company’s Board of Directors with respect to each Series such periodic and special reports as the Trustees and the Manager may reasonably request.

(d)                                 With respect to any investments, including, but not limited to, repurchase and reverse repurchase agreements, derivatives contracts, futures contracts, International Swaps and Derivatives Association, Inc. Master Agreements, and options on futures contracts (“futures”), which are permitted to be made by the Sub-Adviser in accordance with this Agreement and the investment objectives and strategies of the Series as outlined in the Registration Statement for the Company, the Manager hereby authorizes and directs the Sub-Adviser to do and perform every act and thing whatsoever necessary or incidental in performing its duties and obligations under this Agreement including, but not limited to, executing as agent, on behalf of each Series, brokerage agreements and other documents to establish, operate and conduct all brokerage or other trading accounts, and executing as agent, on behalf of each Series, such agreements and other documentation as may be required for the purchase or sale, assignment, transfer and ownership of any permitted investment, including limited partnership agreements, repurchase and derivative master agreements, including any schedules and annexes to such agreements, releases, consents, elections and confirmations. The Manager acknowledges and understands that it will be bound by any such trading accounts established, and agreements and other documentation executed, by the Sub-Adviser for such investment purposes.

3. Broker-Dealer Selection. The Sub-Adviser is authorized to make decisions to buy and sell securities and other investments for each Series’ portfolio, broker-dealer selection, and negotiation of brokerage commission rates in effecting a security transaction. The Sub-Adviser’s primary consideration in effecting a security transaction will be to obtain the best execution for the Series, taking into account the factors specified in the Registration Statement, and determined in consultation with the Manager, which include price (including the applicable brokerage commission or dollar spread), the size of the order, the nature of the market for the security, the timing of the transaction, the reputation, experience and financial stability of the broker-dealer involved, the quality of the service, the difficulty of execution, and the execution capabilities and operational facilities of the firm involved, and the firm’s risk in positioning a block of securities. Accordingly, the price to a Series in any transaction may be less favorable than that available from another broker-dealer if the difference is reasonably justified, in the judgment of the Sub-Adviser in the exercise of its fiduciary obligations to the Company, by other aspects of the

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portfolio execution services offered. Subject to such policies as the Company’s Board of Directors or Manager may determine and consistent with Section 28(e) of the Securities Exchange Act of 1934, the Sub-Adviser shall not be deemed to have acted unlawfully or to have breached any duty created by this Agreement or otherwise solely by reason of its having caused a Series to pay a broker-dealer for effecting a portfolio investment transaction in excess of the amount of commission another broker-dealer would have charged for effecting that transaction, if the Sub-Adviser 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 broker-dealer, viewed in terms of either that particular transaction or the Sub-Adviser’s or the Manager’s overall responsibilities with respect to the Series and to their respective other clients as to which they exercise investment discretion. The Sub-Adviser will consult with the Manager to the end that portfolio transactions on behalf of a Series are directed to broker-dealers on the basis of criteria reasonably considered appropriate by the Manager. To the extent consistent with these standards, the Sub-Adviser is further authorized to allocate the orders placed by it on behalf of a Series to the Sub-Adviser if it is registered as a broker-dealer with the SEC, to an affiliated broker-dealer, or to such brokers and dealers who also provide research or statistical material, or other services to the Series, the Sub-Adviser, or an affiliate of the Sub-Adviser. Such allocation shall be in such amounts and proportions as the Sub-Adviser shall determine consistent with the above standards, and the Sub-Adviser will report on said allocation regularly to the Company’s Board of Directors indicating the broker-dealers to which such allocations have been made and the basis therefor.

4. Disclosure about Sub-Adviser. The Sub-Adviser has reviewed the most recent Post-Effective Amendment to the Registration Statement for the Company filed with the SEC that contains disclosure about the Sub-Adviser, and represents and warrants that, with respect to the disclosure about the Sub-Adviser or information relating, directly or indirectly, to the Sub-Adviser, such Registration Statement contains, as of the date hereof, no untrue statement of any material fact and does not omit any statement of a material fact which was required to be stated therein or necessary to make the statements contained therein, in light of the circumstances under which they were made, not misleading. The Sub-Adviser further represents and warrants that it is a duly registered investment adviser under the Advisers Act and will maintain such registration so long as this Agreement remains in effect. The Sub-Adviser will provide the Manager with a copy of the Sub-Adviser’s Form ADV and any amendments thereto at the time such filing is made with the SEC.

5. Expenses. During the term of this Agreement, the Sub-Adviser will pay all expenses incurred by it and its staff and for their activities in connection with its portfolio management duties under this Agreement. The Manager or the Company shall be responsible for all the expenses of the Company’s operations.

6. Compensation. For the services provided to each Series, the Manager will pay the Sub-Adviser an annual fee equal to the amount specified for such Series in Schedule A hereto, payable monthly in arrears. The fee will be appropriately prorated to reflect any portion of a calendar month that this Agreement is not in effect among the parties. In accordance with the provisions of the Investment Management Agreement, the Manager is solely responsible for the payment of fees to the Sub-Adviser, and the Sub-Adviser agrees to seek payment of its fees solely from the Manager.

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7. Marketing Materials.

(a)                                 During the term of this Agreement, the Sub-Adviser agrees to furnish the Manager at its principal office for prior review and approval by the Manager all written, electronic, and/or printed materials, including but not limited to, PowerPointÒ or slide presentations, news releases, advertisements, brochures, fact sheets and other promotional, informational or marketing materials (the “Marketing Materials”) for internal use or public dissemination, that are produced or are for use or reference by the Sub-Adviser, its affiliates or other designees, broker-dealers or the public in connection with the Series, and Sub-Adviser shall not use any such materials if the Manager reasonably objects in writing within five business days (or such other period as may be mutually agreed) after receipt thereof. Marketing Materials may be furnished to the Manager by first class or overnight mail, facsimile transmission equipment, electronic delivery or hand delivery.

(b)                                 During the term of this Agreement, the Manager agrees to furnish the Sub-Adviser at its principal office all prospectuses, proxy statements, reports to shareholders, or Marketing Materials prepared for distribution to shareholders of each Series, or the public that refer to the Sub-Adviser in any way, prior to the use thereof, and the Manager shall not use any such materials if the Sub-Adviser reasonably objects in writing within five business days (or such other period as may be mutually agreed) after receipt thereof. The Sub-Adviser’s right to object to such materials is limited to the portions of such materials that expressly relate to the Sub-Adviser, its services and its clients. The Manager agrees to use its reasonable best efforts to ensure that materials prepared by its employees or agents or its affiliates that refer to the Sub-Adviser or its clients in any way are consistent with those materials previously approved by the Sub-Adviser as referenced in the first sentence of this paragraph. Marketing Materials may be furnished to the Sub-Adviser by first class or overnight mail, facsimile transmission equipment, electronic delivery or hand delivery.

8. Compliance.

(a)                                 The Sub-Adviser agrees to use reasonable compliance techniques as the Manager or the Board of Directors may adopt, including any written compliance procedures.

(b)                                 The Sub-Adviser agrees that it shall promptly notify the Manager and the Company (1) in the event that the SEC has censured the Sub-Adviser; placed limitations upon its activities, functions or operations; suspended or revoked its registration as an investment adviser; or has commenced proceedings or an investigation that may result in any of these actions, or (2) upon having a reasonable basis for believing that the Series has ceased to qualify or might not qualify as a regulated investment company under Subchapter M of the Code. The Sub-Adviser further agrees to notify the Manager and the Company promptly of any material fact known to the Sub-Adviser respecting or relating to the Sub-Adviser that is not contained in the Registration Statement for the Company (which describes the Series), or if any statement contained therein that becomes untrue in any material respect.

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(c)                                  The Manager agrees that it shall promptly notify the Sub-Adviser (1) in the event that the SEC has censured the Manager or the Company; placed limitations upon either of their activities, functions, or operations; suspended or revoked the Manager’s registration as an investment adviser; or has commenced proceedings or an investigation that may result in any of these actions, or (2) upon having a reasonable basis for believing that the Series has ceased to qualify or might not qualify as a regulated investment company under Subchapter M of the Code.

9. Books and Records. The Sub-Adviser hereby agrees that all records which it maintains for the Series may be the property of the Company and further agrees to surrender promptly to the Company any of such records upon the Company’s or the Manager’s request in compliance with the requirements of Rule 31a-3 under the 1940 Act, although the Sub-Adviser may, at its own expense, make and retain a copy of such records. The Sub-Adviser further agrees to preserve for the periods prescribed by Rule 31a-2 under the 1940 Act the records required to be maintained by Rule 31a-l under the 1940 Act.

10. Cooperation; Confidentiality. Each party to this Agreement agrees to cooperate with the other party and with all appropriate governmental authorities having the requisite jurisdiction (including, but not limited to, the SEC) in connection with any investigation or inquiry relating to this Agreement or the Company. Subject to the foregoing, the Sub-Adviser shall treat as confidential all information pertaining to the Company and actions of the Company, the Manager and the Sub-Adviser, and the Manager shall treat as confidential and use only in connection with the Series all information furnished to the Company or the Manager by the Sub-Adviser, in connection with its duties under the Agreement except that the aforesaid information need not be treated as confidential if required to be disclosed under applicable law, if generally available to the public through means other than by disclosure by the Sub-Adviser or the Manager, or if available from a source other than the Manager, Sub-Adviser or this Company.

11. Non-Exclusivity. The services of the Sub-Adviser to the Series and the Company are not to be deemed to be exclusive, and the Sub-Adviser shall be free to render investment advisory or other services to others (including other investment companies) and to engage in other activities, provided, however, that the Sub-Adviser may not consult with any other Sub-Adviser of the Company concerning transactions in securities or other assets for any investment portfolio of the Company, including the Series, except that such consultations are permitted between the current and successor Sub-Advisers of the Series in order to effect an orderly transition of sub-advisory duties so long as such consultations are not concerning transactions prohibited by Section 17(a) of the 1940 Act.

12. Representations Respecting Sub-Adviser. The Manager agrees that neither the Manager, nor affiliated persons of the Manager, shall give any information or make any representations or statements in connection with the sale of shares of the Series concerning the Sub-Adviser or the Series other than the information or representations contained in the Registration Statement for the Company’s shares, as they may be amended or supplemented from time to time, or in reports or proxy statements for the Company, or in sales literature or other Marketing Material approved in advance as provided by the Sub-Adviser, except with the prior permission of the Sub-Adviser.

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13. Control. Notwithstanding any other provision of the Agreement, it is understood and agreed that the Company shall at all times retain the ultimate responsibility for and control of all functions performed pursuant to this Agreement and has reserved the right to reasonably direct any action hereunder taken on its behalf by the Sub-Adviser.

14. Liability. Except as may otherwise be required by the 1940 Act or the rules thereunder or other applicable law, the Manager agrees that the Sub-Adviser, any affiliated person of the Sub-Adviser, and each person, if any, who, within the meaning of Section 15 of the 1933 Act controls the Sub-Adviser: (1) shall bear no responsibility and shall not be subject to any liability for any act or omission respecting any series of the Company that is not a Series hereunder; and (2) shall not be liable for, or subject to any damages, expenses, or losses in connection with, any act or omission connected with or arising out of any services rendered under this Agreement, except by reason of willful misfeasance, bad faith, or negligence in the performance of the Sub-Adviser’s duties, or by reason of reckless disregard of the Sub-Adviser’s obligations and duties under this Agreement.

15. Indemnification.

(a)                                 The Manager agrees to indemnify and hold harmless the Sub-Adviser, any affiliated person of the Sub-Adviser, and each person, if any, who, within the meaning of Section 15 of the 1933 Act controls (“controlling person”) the Sub-Adviser (all of such persons being referred to as “Sub-Adviser Indemnified Persons”) against any and all losses, claims, damages, liabilities, or litigation (including legal and other expenses) to which a Sub-Adviser Indemnified Person may become subject under the 1933 Act, the 1940 Act, the Advisers Act, under any other statute, at common law or otherwise, arising out of the Manager’s responsibilities to the Company which: (1) may be based upon the Manager’s negligence, willful misfeasance, or bad faith in the performance of its duties (which could include a negligent action or a negligent omission to act), or by reason of the Manager’s reckless disregard of its obligations and duties under this Agreement; or (2) may be based upon any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement of the Company or any Series, or the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, unless such statement or omission was made in reliance upon information furnished to the Manager or the Company or to any affiliated person of the Manager by a Sub-Adviser Indemnified Person; provided however, that in no case shall the indemnity in favor of the Sub-Adviser Indemnified Person be deemed to protect such person against any liability to which any such person would otherwise be subject by reason of willful misfeasance, bad faith, or gross negligence in the performance of its duties, or by reason of its reckless disregard of obligations and duties under this Agreement.

(b)                                 Notwithstanding Section 14 of this Agreement, the Sub-Adviser agrees to indemnify and hold harmless the Manager, any affiliated person of the Manager, and any controlling person of the Manager (all of such persons being referred to as “Manager Indemnified Persons”) against any and all losses, claims, damages, liabilities, or litigation (including legal and other expenses) to which a Manager Indemnified Person may become subject under the 1933 Act, 1940 Act, the Advisers Act, under any other statute,

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at common law or otherwise, arising out of the Sub-Adviser’s responsibilities as Sub-Adviser of the Series which: (1) may be based upon the Sub-Adviser’s negligence, willful misfeasance, or bad faith in the performance of its duties (which could include a negligent action or a negligent omission to act), or by reason of the Sub-Adviser’s reckless disregard of its obligations and duties under this Agreement; or (2) may be based upon any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement of the Company or any Series, or the omission or alleged omission to state therein a material fact known or which should have been known to the Sub-Adviser and was required to be stated therein or necessary to make the statements therein not misleading, if such a statement or omission was made in reliance upon information furnished to the Manager, the Company, or any affiliated person of the Manager or Company by the Sub-Adviser or any affiliated person of the Sub-Adviser; provided, however, that in no case shall the indemnity in favor of a Manager Indemnified Person be deemed to protect such person against any liability to which any such person would otherwise be subject by reason of willful misfeasance, bad faith, gross negligence in the performance of its duties, or by reason of its reckless disregard of its obligations and duties under this Agreement.

(c)                                  The Manager shall not be liable under Paragraph (a) of this Section 15 with respect to any claim made against a Sub-Adviser Indemnified Person unless such Sub-Adviser Indemnified Person shall have notified the Manager in writing within a reasonable time after the summons or other first legal process giving information of the nature of the claim shall have been served upon such Sub-Adviser Indemnified Person (or after such Sub-Adviser Indemnified Person shall have received notice of such service on any designated agent), but failure to notify the Manager of any such claim shall not relieve the Manager from any liability which it may have to the Sub-Adviser Indemnified Person against whom such action is brought except to the extent the Manager is prejudiced by the failure or delay in giving such notice. In case any such action is brought against the Sub-Adviser Indemnified Person, the Manager will be entitled to participate, at its own expense, in the defense thereof or, after notice to the Sub-Adviser Indemnified Person, to assume the defense thereof, with counsel satisfactory to the Sub-Adviser Indemnified Person. If the Manager assumes the defense of any such action and the selection of counsel by the Manager to represent the Manager and the Sub-Adviser Indemnified Person would result in a conflict of interests and therefore, would not, in the reasonable judgment of the Sub-Adviser Indemnified Person, adequately represent the interests of the Sub-Adviser Indemnified Person, the Manager will, at its own expense, assume the defense with counsel to the Manager and, also at its own expense, with separate counsel to the Sub-Adviser Indemnified Person, which counsel shall be satisfactory to the Manager and to the Sub-Adviser Indemnified Person. The Sub-Adviser Indemnified Person shall bear the fees and expenses of any additional counsel retained by it, and the Manager shall not be liable to the Sub-Adviser Indemnified Person under this Agreement for any legal or other expenses subsequently incurred by the Sub-Adviser Indemnified Person independently in connection with the defense thereof other than reasonable costs of investigation. The Manager shall not have the right to compromise on or settle the litigation without the prior written consent of the Sub-Adviser Indemnified Person if the compromise or settlement results, or may result in a finding of wrongdoing on the part of the Sub-Adviser Indemnified Person.

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(d)                                 The Sub-Adviser shall not be liable under Paragraph (b) of this Section 15 with respect to any claim made against a Manager Indemnified Person unless such Manager Indemnified Person shall have notified the Sub-Adviser in writing within a reasonable time after the summons or other first legal process giving information of the nature of the claim shall have been served upon such Manager Indemnified Person (or after such Manager Indemnified Person shall have received notice of such service on any designated agent), but failure to notify the Sub-Adviser of any such claim shall not relieve the Sub-Adviser from any liability which it may have to the Manager Indemnified Person against whom such action is brought except to the extent the Sub-Adviser is prejudiced by the failure or delay in giving such notice. In case any such action is brought against the Manager Indemnified Person, the Sub-Adviser will be entitled to participate, at its own expense, in the defense thereof or, after notice to the Manager Indemnified Person, to assume the defense thereof, with counsel satisfactory to the Manager Indemnified Person. If the Sub-Adviser assumes the defense of any such action and the selection of counsel by the Sub-Adviser to represent both the Sub-Adviser and the Manager Indemnified Person would result in a conflict of interests and therefore, would not, in the reasonable judgment of the Manager Indemnified Person, adequately represent the interests of the Manager Indemnified Person, the Sub-Adviser will, at its own expense, assume the defense with counsel to the Sub-Adviser and, also at its own expense, with separate counsel to the Manager Indemnified Person, which counsel shall be satisfactory to the Sub-Adviser and to the Manager Indemnified Person. The Manager Indemnified Person shall bear the fees and expenses of any additional counsel retained by it, and the Sub-Adviser shall not be liable to the Manager Indemnified Person under this Agreement for any legal or other expenses subsequently incurred by the Manager Indemnified Person independently in connection with the defense thereof other than reasonable costs of investigation. The Sub-Adviser shall not have the right to compromise on or settle the litigation without the prior written consent of the Manager Indemnified Person if the compromise or settlement results, or may result in a finding of wrongdoing on the part of the Manager Indemnified Person.

16.                               Duration and Termination.

(a)                                 With respect to each Series identified as a Series on Schedule A hereto on the date of this Agreement, unless earlier terminated with respect to any Series this Agreement shall continue in full force and effect for two years from the effective date of this Agreement with respect to each such Series of this Agreement. Thereafter, unless earlier terminated with respect to a Series, the Agreement shall continue in full force and effect with respect to each such Series for periods of one year, provided that such continuance is specifically approved at least annually by: (1) the vote of a majority of the Board of Directors of the Company; or (2) the vote of a majority of the outstanding voting shares of the Series (as defined in the 1940 Act), and provided that such continuance is also approved by the vote of a majority of the Board of Directors of the Company who are not parties to this Agreement or “interested persons” (as defined in the ▇▇▇▇ ▇▇▇) of the Company or the Manager, cast in person at a meeting called for the purpose of voting on such approval.

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With respect to any Series that is added to Schedule A hereto as a Series after the date of this Agreement, the Agreement shall become effective on the later of: (1) the date Schedule A is amended to reflect the addition of such Series as a Series under the Agreement; or (2) the date upon which the shares of the Series are first sold to the public, subject to the condition that the Company’s Board of Directors, including a majority of those Trustees who are not interested persons (as such term is defined in the ▇▇▇▇ ▇▇▇) of the Manager, and, to the extent necessary under applicable law, the shareholders of such Series, shall have approved this Agreement. Unless terminated earlier as provided herein with respect to any such Series, the Agreement shall continue in full force and effect for a period of two years from the date of its effectiveness (as identified above) with respect to that Series. Thereafter, unless earlier terminated with respect to a Series, the Agreement shall continue in full force and effect with respect to each such Series for periods of one year, provided that such continuance is specifically approved at least annually by: (1) the vote of a majority of the Board of Directors of the Company; or (2) vote of a majority of the outstanding voting shares of such Series (as defined in the 1940 Act), and provided that such continuance is also approved by the vote of a majority of the Board of Directors of the Company who are not parties to this Agreement or “interested persons” (as defined in the ▇▇▇▇ ▇▇▇) of the Company or the Manager, cast in person at a meeting called for the purpose of voting on such approval. However, any approval of this Agreement by the holders of a majority of the outstanding shares (as defined in the ▇▇▇▇ ▇▇▇) of a Series shall be effective to continue this Agreement with respect to such Series notwithstanding: (1) that this Agreement has not been approved by the holders of a majority of the outstanding shares of any other Series; or (2) that this Agreement has not been approved by the vote of a majority of the outstanding shares of the Company, unless such approval shall be required by any other applicable law or otherwise.

Notwithstanding the foregoing, this Agreement may be terminated with respect to any Series covered by this Agreement: (1) by the Manager at any time, upon sixty days’ written notice to the Sub-Adviser and the Company; (2) at any time without payment of any penalty by the Company, by the Company’s Board of Directors or a majority of the outstanding voting securities of each Series, upon sixty days’ written notice to the Manager and the Sub-Adviser; or (3) by the Sub-Adviser upon three months’ written notice unless the Company; or the Manager requests additional time to find a replacement for the Sub-Adviser, in which case the Sub-Adviser shall allow the additional time requested by the Company or Manager not to exceed three additional months beyond the initial three-month notice period; provided, however, that the Sub-Adviser may terminate this Agreement at any time without penalty, effective upon written notice to the Manager and the Company, in the event either the Sub-Adviser (acting in good faith) or the Manager ceases to be registered as an investment adviser under the Advisers Act or otherwise becomes legally incapable of providing investment management services pursuant to this Agreement with the Company, or in the event the Manager becomes bankrupt or otherwise incapable of carrying out its obligations under this Agreement, or in the event that the Sub-Adviser does not receive compensation for its services from the Manager or the Company as required by the terms of this Agreement.

In the event of termination for any reason, all records of each Series for which the Agreement is terminated shall promptly be returned to the Manager or the Company, free

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from any claim or retention of rights in such record by the Sub-Adviser, although the Sub-Adviser may, at its own expense, make and retain a copy of such records. This Agreement shall automatically terminate in the event of its assignment (as such term is described in the 1940 Act). In the event this Agreement is terminated or is not approved in the manner described above, the Sections or Paragraphs numbered 9, 10, 12, 13, 14 and 15 of this Agreement shall remain in effect, as well as any applicable provision of this Section numbered 16 and, to the extent that only amounts are owed to the Sub-Adviser as compensation for services rendered while the Agreement was in effect, Section 6.

(b)                                 Notices. Any notice must be in writing and shall be sufficiently given: (1) when delivered in person; (2) when dispatched by telegram or electronic facsimile transfer (confirmed in writing by postage prepaid first class air mail simultaneously dispatched); (3) when sent by internationally recognized overnight courier service (with receipt confirmed by such overnight courier service); or (4) when sent by registered or certified mail, to the other party at the address of such party set forth below or at such other address as such party may from time to time specify in writing to the other party.

If to the Company:

Voya Series Funds, Inc.

▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇, ▇▇▇▇▇ ▇▇▇

▇▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇-▇▇▇▇

Attention: ▇▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇

If to the Sub-Adviser:

Voya Investment Management Co. LLC

▇▇▇ ▇▇▇▇▇▇ ▇▇▇, ▇▇-▇

▇▇▇▇▇▇▇, ▇▇  ▇▇▇▇▇

Attention:  ▇▇▇▇▇▇▇ ▇▇▇▇▇ Birbara, Legal Department

With a copy to:

Voya Investment Management Co. LLC

▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇

▇▇▇ ▇▇▇▇, ▇▇  ▇▇▇▇▇

Attention:  ▇▇▇▇▇▇ ▇▇▇▇

If to the Manager:

Voya Investments, LLC

▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇

▇▇▇▇▇ ▇▇▇

▇▇▇▇▇▇▇▇▇▇, ▇▇  ▇▇▇▇▇

Attention:  ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇

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17. Amendments. No provision of this Agreement may be changed, waived, discharged or terminated orally, but only by an instrument in writing signed by the party against which enforcement of the change, waiver, discharge or termination is sought, and no amendment of this Agreement shall be effective until approved as required by applicable law.

18. Miscellaneous.

(a)                                 This Agreement shall be governed by the laws of the State of New York, provided that nothing herein shall be construed in a manner inconsistent with the 1940 Act, the Advisers Act or rules or orders of the SEC thereunder, and without regard for the conflicts of laws principle thereof. The term “affiliate” or “affiliated person” as used in this Agreement shall mean “affiliated person” as defined in Section 2(a)(3) of the ▇▇▇▇ ▇▇▇.

(b)                                 The Manager and the Sub-Adviser acknowledge that the Company enjoys the rights of a third-party beneficiary under this Agreement.

(c)                                  The captions of this Agreement are included for convenience only and in no way define or limit any of the provisions hereof or otherwise affect their construction or effect.

(d)                                 To the extent permitted under Section 16 of this Agreement, this Agreement may only be assigned by any party with the prior written consent of the other parties.

(e)                                  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, and to this extent, the provisions of this Agreement shall be deemed to be severable.

(f)                                   Nothing herein shall be construed as constituting the Sub-Adviser as an agent or co-partner of the Manager, or constituting the Manager as an agent or co-partner of the Sub-Adviser.

(g)                                  This Agreement may be executed in counterparts.

(REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK)

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IN WITNESS WHEREOF, the parties hereto have caused this instrument to be executed as of the day and year first above written.

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SCHEDULE A

with respect to the

SUB-ADVISORY AGREEMENT

between

VOYA INVESTMENTS, LLC

and

VOYA INVESTMENT MANAGEMENT CO. LLC

(1)         “Direct Investments” shall mean assets which are not Underlying Funds.

(2)         “Underlying Funds” shall mean open-end investment companies registered under the 1940 Act within the Voya fund complex.  The term, “fund complex” shall have the same meaning as defined in Item 17 of Form N-1A, as it was in effect on November 18, 2014.

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(3)         “A Direct Investment is an investment in a financial instrument issued by an issuer that is not a part of the Voya family of funds, including, but not limited to: a security issued by an investment company that is not a part of the Voya fund complex, including exchange traded funds; a security issued by a non-mutual fund issuer, such as an operating company; and derivative instruments other than call options written by Voya Investment Management Co. LLC.  The term, “fund complex” shall have the same meaning as defined in Item 17 of Form N-1A, as it was in effect on November 18, 2014.

(4)         “Underlying Funds” shall mean open-end investment companies registered under the 1940 Act within the Voya fund complex.  The term, “fund complex” shall have the same meaning as defined in Item 17 of Form N-1A, as it was in effect on November 18, 2014.

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