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EXHIBIT (d)(6)

CALVERT VP S&P MIDCAP 400 INDEX PORTFOLIO

INVESTMENT SUB-ADVISORY AGREEMENT

This INVESTMENT SUB-ADVISORY AGREEMENT (“Agreement”) effective this 31st day of December 2016 is between Calvert Research and Management (“Adviser”), a Massachusetts business trust, and Ameritas Investment Partners, Inc., a Nebraska corporation (“Sub-Adviser”).

WHEREAS, Calvert VP S&P MidCap 400 Index Portfolio (“Fund”), a series of Calvert Variable Products, Inc. (“Company”), is registered under the Investment Company Act of 1940, as amended (“1940 Act”), as an open-end, management investment company; and

WHEREAS, pursuant to an Investment Advisory Agreement dated December 31, 2016 (“Advisory Agreement”), a copy of which has been provided to the Sub-Adviser, the Company has retained the Adviser to render investment advisory services to the Fund (as described more fully below); and

WHEREAS, pursuant to authority granted to the Adviser in the Advisory Agreement, the Adviser wishes to retain the Sub-Adviser to furnish investment advisory services to the Fund and the Adviser, and the Sub-Adviser is willing to furnish such services to the Fund and the Adviser.

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

Appointment. The Adviser hereby appoints the Sub-Adviser to act as the investment sub-adviser for and to manage the investment and reinvestment of that portion of the Fund’s assets that shall be allocated to the Sub-Adviser (“Portfolio”), subject to the supervision of the Adviser, for the period and on the terms set forth in this Agreement. The Sub-Adviser accepts such appointment and agrees to furnish the services set forth herein for the period and on the terms set forth in this Agreement.

Subject to the requirements of the 1940 Act, the Adviser has the authority in its discretion to alter the allocation of the Fund’s assets among the Sub-Adviser, the Adviser and any other appointed sub-adviser.

Sub-Adviser Duties. Subject to the supervision of the Board of Directors (the “Board”) and the Adviser, the Sub-Adviser will provide a continuous investment program for the Portfolio and determine, in its discretion, the composition of the assets of the Portfolio, including the determination of the purchase, retention, or sale of the securities, cash, and other investments for the Portfolio. The Sub-Adviser will provide investment research and conduct a continuous program of evaluation, investment, sale, and reinvestment of the Portfolio’s assets by determining (a) the securities and other investments that shall be purchased, entered into, sold, closed, and/or exchanged for the Portfolio; (b) when these transactions should be executed, and (c) what portion of the assets of the Portfolio should be held in various securities and other investments in which the Fund is permitted to invest. In accordance with the terms of this Agreement, the Sub-Adviser is authorized, in its sole discretion, to buy, sell, and otherwise trade in any of the types of securities and investment instruments in accordance with the investment objectives and policies disclosed in the Company’s Registration Statement for the Fund as filed with the U.S. Securities and Exchange Commission (“SEC”) under the Securities Act of 1933, as amended (“1933 Act”), and the 1940 Act, as from time to time amended (“Registration Statement”).

The Sub-Adviser will provide the services under this Agreement in accordance with the Company’s Articles of Incorporation, By-Laws, and the Fund’s investment objective(s), policies and procedures and restrictions as stated in the Registration Statement. The Adviser shall provide the Sub-

Adviser with copies of the Company’s Articles of Incorporation, By-Laws, and any amendment to the Registration Statement promptly following its filing with the SEC as well as any sticker supplements to the Fund’s prospectus or statement of additional information relevant to the Sub-Adviser or its management of the Fund. Sub-Adviser’s services under this Agreement may also be subject to any other investment parameters for the Fund (including portfolio risk limits) that are mutually agreed to in writing by the Adviser and the Sub-Adviser.

The Sub-Adviser further agrees as follows:

The Sub-Adviser shall perform its duties hereunder in accordance with (i) the 1940 Act and all rules and regulations thereunder, (ii) all other applicable federal and state laws and regulations, (iii) any procedures adopted by the Board and deemed applicable by the Adviser to the Fund (provided that the Sub-Adviser has been or will be provided by the Adviser with a copy of any current or future procedures and has been provided with a reasonable period of time to understand and adapt to such procedures) (“Fund Procedures”), (iv) the provisions of the Fund’s Registration Statement (as described above), and (v) the Sub-Adviser’s operating policies and procedures provided to the Adviser. The Sub-Adviser shall exercise reasonable care in the performance of its duties under the Agreement. With respect to (iii) above, by executing this Agreement, the Sub-Adviser acknowledges that it has received from the Adviser written copies of the current Fund Procedures and has had a reasonable period of time to understand and adapt to such Procedures.

The Sub-Adviser will manage the Portfolio so that it meets the income and asset diversification requirements of Section 851 of the Internal Revenue Code of 1986, as amended (“Code”). The Sub-Adviser shall not be responsible for compliance with Section 851 of the Code with respect to any portions of the Fund that are not part of the Portfolio.

The Adviser has assumed responsibility for voting proxies for the Fund’s portfolio investments pursuant to the Fund’s Proxy Voting Guidelines. To the extent necessary, the Sub-Adviser agrees to take any appropriate actions to facilitate the Adviser's timely receipt of all proxies for the Fund’s portfolio investments.

The Sub-Adviser will assist the Company’s Custodian (“Custodian”) of the and the Adviser in determining or confirming, consistent with the relevant Fund Procedures and as stated in the Registration Statement, the value of any portfolio securities or other assets in the Portfolio for which the Custodian or the Adviser seeks assistance from, or identifies for review by, the Sub-Adviser and otherwise perform such duties as sub-adviser for the Portfolio as are specifically described in such Fund Procedures. The parties acknowledge that the Sub-Adviser is not a custodian of the Company’s assets and will not take possession or custody of such assets.

Following the end of each of the Fund’s fiscal quarters, the Sub-Adviser will assist the Fund’s administrator in its preparation of any reports required by applicable rules and regulations, such as Form N-CSR, Form N-SAR and Form N-Q, to be filed by the Fund as well as any discussion of the Portfolio’s performance required by applicable law. The Sub-Adviser will also provide periodic commentaries regarding the performance of the Portfolio as reasonably requested by the Adviser, which shall be subject to review and approval by the Adviser. The Sub-Adviser also will provide to the Company any certifications relating to the content of any such report, discussion or commentary as required by relevant Fund Procedures or as is otherwise reasonably requested by the Company.

The Sub-Adviser will complete and deliver to the Adviser for each quarter on or before the 30^th calendar day of the following quarter (i) a written compliance checklist in a form provided by the Adviser, (ii) a written investment oversight questionnaire in a form provided by the Adviser, (iii) a risk management and related analytic report in a format agreed to in advance by the Adviser and Sub-Adviser, and (iv) such other reports as may be reasonably requested by the Adviser.

The Sub-Adviser will make available to the Company and the Adviser, promptly upon request, any of the investment records and ledgers for the Portfolio maintained by the Sub-Adviser (which shall not include the records and ledgers maintained by the Custodian, portfolio accounting agent or other service providers for the Company) as are necessary to assist the Company and the Adviser in complying with requirements of the 1940 Act and the Investment Advisers Act of 1940, as amended (“Advisers Act”), and the rules under each, as well as other applicable securities laws. The Sub-Adviser will furnish to regulatory authorities, having the requisite authority over the Fund, any information or reports in connection with the Sub-Adviser’s services to the Fund and the Adviser that may be requested in order to ascertain whether the operations of the Fund are being conducted in a manner consistent with applicable laws and regulations.

The Sub-Adviser will provide periodic reports to the Board (for consideration at meetings of the Board) on the investment program for the Portfolio and the investments in the Portfolio in a format agreed to in advance by the Adviser and Sub-Adviser and such other special reports as the Board or the Adviser may reasonably request, provided the format of such special reports is agreed to in advance by the Adviser and Sub-Adviser.

The Sub-Adviser will maintain a fidelity bond, as well as insurance for its directors and officers and errors and omissions in an adequate amount based on the Sub-Adviser’s assets under management and the scope of its business.

The Sub-Adviser at its expense will provide the Adviser with such compliance reports relating to its duties under this Agreement as may be agreed upon by such parties from time to time, including, without limitation, a daily report that (i) monitors the shares of Exchange Traded Funds (“ETFs”) across all of the Funds in the Company sub-advised by the Sub-Adviser (the “Sub-Advised Funds”) and (ii) reports the aggregate number of shares of each ETF held in one or more Sub-Advised Funds as a percentage of the aggregate outstanding shares of that ETF and (iii) warns the reader if the percentage calculated in (ii) equals or exceeds 2% (such report, the “ETF Compliance Report”).

[Reserved]

Broker-Dealer Selection and Portfolio Transaction Information. The Sub-Adviser is authorized to place all orders for the purchase or sale of portfolio securities and investment instruments permitted by the Fund’s Registration Statement for the Portfolio either directly with the issuer or with brokers or dealers selected by the Sub-Adviser. To that end, the Sub-Adviser is authorized as the agent of the Fund to give instructions to the Custodian as to deliveries of securities and investment instruments and payments of cash for the account of the Fund. In connection with the selection of such brokers or dealers and the placing of orders for the Portfolio, the Sub-Adviser shall follow the relevant Fund Procedures, including the policies and procedures relating to brokerage allocation and use of Fund commissions and shall use its best efforts to seek, on behalf of the Fund, the best overall execution available. The Sub-Adviser will report on brokerage allocation to the Company’s Board periodically indicating the broker-dealers to which such allocations have been made and the basis therefore.

The Sub-Adviser will arrange for the transmission to the Custodian on a daily basis such confirmation, trade tickets, and other documents and information, including, but not limited to, CUSIP, Cedel, or other numbers that identify securities to be purchased or sold on behalf of the Portfolio, as may be reasonably necessary to enable the Custodian to perform its administrative and recordkeeping responsibilities with respect to the Company.

Disclosure about Sub-Adviser. The Sub-Adviser has received and reviewed the most current amendment to the Registration Statement for the Company relating to the offering of Fund shares that contains disclosure about the Sub-Adviser, and represents and warrants that, with respect to the disclosure about the Sub-Adviser and its investment process or personnel, and securities or other investments permitted for investment for the Portfolio, including the risks of such securities or other

investments, such Registration Statement, as of the date hereof, contains no untrue statement of any material fact or omits to state a material fact that would be necessary in order to make the statements contained therein, in light of the circumstances under which they were made, not misleading. The Sub-Adviser agrees to promptly notify the Adviser of any changes to the above referenced information within the Registration Statement that are necessary for the Registration Statement to remain accurate or to ensure that the Registration Statement contains no untrue statement of any material fact or omits to state a material fact that would be necessary in order 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 Adviser hereby acknowledges that it has received a copy of the Sub-Adviser’s Form ADV (as filed with the SEC) prior to entering into this Agreement.

Duties of the Adviser. The Adviser undertakes to provide the Sub-Adviser with reasonable advance written notice of any action taken by the Adviser or the Company’s Board that is likely to have any impact on the Sub-Adviser or its ability to provide services under this Agreement including, without limitation, any change to (i) the Fund’s investment objective, strategies, policies, and restrictions, (ii) the Fund Procedures, or (iii) the Registration Statement as it relates to the services provided by the Sub-Adviser to the Fund. The Adviser agrees that, provided it is within its ability, it will allow for a reasonable implementation period for any such action and Sub-Adviser agrees it will make a reasonable effort to implement any such action within such implementation period.

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 duties under this Agreement, including, but not limited to, rental and overhead expenses, expenses of the Sub-Adviser’s personnel, insurance of the Sub-Adviser and its personnel, research services (except as permitted under the Fund Procedures), and taxes of the Sub-Adviser.

The Sub-Adviser shall bear all expenses and costs of the Company (including reasonable attorney’s fees), if any, arising out of a termination or possible termination of this Agreement as a result of an assignment caused by a change of control or management of the Sub-Adviser, including the preparation and mailing of an information statement to shareholders pursuant to a “manager-of-managers” exemptive order from the SEC, or the preparation, mailing, solicitation and other costs associated with the use of a proxy statement relating to a shareholder vote in respect of a new sub-advisory agreement. The foregoing obligations of the Sub-Adviser shall apply in any circumstance in which the Adviser, in consultation with internal or outside counsel to the Company, deems that an actual or possible assignment of this Agreement has or may occur, and determines that an information statement should be used, or a vote of shareholders should be obtained, as the case may be.

The Sub-Adviser will not be responsible for extraordinary expenses relating to inspections, investigations, inquiries and other actions by regulatory authorities except to the extent that such extraordinary expenses specifically relate to the Sub-Adviser’s services provided to the Portfolio or are the result of the actions or omissions of the Sub-Adviser or any affiliated person of the Sub-Adviser, and each person, if any, who, within the meaning of Section 15 of the 1933 Act is a Controlling Person of the Sub-Adviser.

The Adviser and the Company shall be responsible for all expenses of the Fund’s and Adviser’s operations including, without limitation, those described in the Advisory Agreement.

Compensation. For the services provided to the Fund, the Adviser will pay the Sub-Adviser an annual fee equal to the amount specified in Schedule A hereto payable monthly in arrears on the last business day of each month. The fee will be appropriately prorated to reflect any portion of a

calendar month that this Agreement is not in effect. The Adviser 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 Adviser. The Company shall have no liability for Sub-Adviser’s fee hereunder.

Materials.

During the term of this Agreement, the Adviser agrees to furnish the Sub-Adviser at its principal office all prospectuses, statements of additional information, and sticker supplements relevant to the Sub-Adviser or its management of the Portfolio, as well as proxy statements and reports to shareholders prepared for distribution to shareholders of the Fund, which refer to the Sub-Adviser, prior to the use thereof, and neither the Adviser nor the Company shall use any such materials if the Sub-Adviser reasonably objects in writing within 3 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 reasonable objections with respect to the accuracy or completeness of the disclosure in such documents or reports.

It is understood that the name Ameritas Investment Partners or any derivative thereof or logos associated with such name is the valuable property of the Sub-Adviser and its affiliates and that the Fund or its affiliates have the right to use such name (or derivatives or logos) in offering materials of the Fund and for so long as the Sub-Adviser is a sub-adviser to the Portfolio. Upon termination of this Agreement the Fund shall as soon as is reasonably possible cease to use such name (or derivatives or logos).

It is understood that the name Calvert or any derivative thereof or logos associated with such name is the valuable property of the Adviser and its affiliates and that the Sub-Adviser has the right to use such name (or derivatives or logos) in client lists. Any other use shall require approval in advance from the Adviser. Upon termination of this Agreement the Sub-Adviser shall as soon as is reasonably possible cease to use such name (or derivatives or logos).

10.

Compliance.

As required by Rule 206(4)-7 under the Advisers Act, the Sub-Adviser has adopted written policies and procedures reasonably designed to prevent violation by it, or any of its supervised persons, of the Advisers Act and the rules under the Advisers Act and all other laws and regulations relevant to the performance of its duties under this Agreement (“Sub-Adviser Procedures”). The Sub-Adviser has designated a chief compliance officer (“CCO”) responsible for administering the Sub-Adviser Procedures. The CCO shall provide to the Adviser and/or the Company and their respective CCOs written compliance reports relating to the operations and compliance procedures of the Sub-Adviser as may be required by law or regulation or as are otherwise reasonably requested. The Sub-Adviser agrees to implement other or additional compliance techniques as the Adviser or the Board may reasonably request, including written compliance procedures, provided that doing so would not cause the Sub-Adviser to incur additional significant fees or expenses or otherwise conflict with the Sub-Adviser’s compliance program.

The Sub-Adviser agrees that, if legally permitted, it shall promptly notify (orally or in writing), the Adviser and the Company if the SEC has: commenced an examination of the Sub-Adviser, censured the Sub-Adviser; placed limitations upon its activities, functions or operations; suspended or revoked its registration as an investment adviser; commenced proceedings or an investigation (formally or informally) that may result in any of these actions; or corresponded with the Sub-Adviser including sending a deficiency letter or raising issues about the business, operations, or practices of the Sub-Adviser, which may have a material impact on the Sub-Adviser’s ability to manage the Portfolio. The Sub-Adviser further agrees to promptly notify the Adviser and the Company upon detection of any breach of any of the Fund Procedures or material violation of any applicable law or regulation, including the 1940 Act and Subchapter M of the Code, relating to the Portfolio, or upon detection of any violation of the Sub-Adviser Procedures that relate to the Portfolio or Sub-Adviser’s

activities as an investment sub-adviser generally. The Sub-Adviser further agrees to promptly notify the Adviser and the Company of any material fact known to the Sub-Adviser relating to the Sub-Adviser that is not contained in the Fund’s Registration Statement, prospectus or statement of additional information, or any amendment or supplement thereto, or if any statement contained therein that becomes untrue in any material respect.

The Adviser agrees that it shall promptly notify, if legally permitted, the Sub-Adviser (1) in the event that the SEC has censured the Adviser or the Company with respect to the Fund; placed limitations upon either of their activities, functions, or operations; suspended or revoked the Adviser’s registration as an investment adviser; or has commenced proceedings or an investigation that may result in any of these actions, (2) upon having a reasonable basis for believing that the Company has ceased to qualify or might not qualify as a regulated investment company under Subchapter M of the Code, (3) of any regulatory matter involving the Fund’s investments or investment practices, or (4) if the ETF Compliance Report indicates that the Sub-Advised Funds hold, in the aggregate, more than 2% of the outstanding shares of any ETF.

The Sub-Adviser will provide the Adviser with such reports, presentations, certifications and other information as the Adviser may reasonably request from time to time concerning the business and operations of the Sub-Adviser in performing services hereunder or generally concerning the Sub-Adviser’s investment advisory services, the Sub-Adviser’s compliance with applicable federal, state and local law and regulations, and other matters that are likely to have a material impact on the Sub-Adviser’s duties hereunder.

11.

Books and Records. The Sub-Adviser hereby agrees that all records which it maintains for the Portfolio are the property of the Company and further agrees to surrender promptly to the Company any of such records upon the Company’s or the Adviser’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.

12.

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, the Fund or the Company. Subject to the foregoing, each party shall treat as confidential all information pertaining to the Sub-Adviser, Adviser, the Fund or its shareholders or the Company (as applicable), their actions with respect to the Fund and the Company, and the business, operations and clients of the Adviser and the Sub-Adviser, except that the aforesaid information need not be treated as confidential if (a) required to be disclosed under applicable law, (b) generally available to the public through means other than by disclosure by the parties, or (c) available from a source other than the Adviser, Sub-Adviser or the Company. Sub-Adviser acknowledges that the Adviser will have continuous access to the Portfolio’s holdings and information relating to Portfolio management that is in the possession of the Fund’s custodian.

Neither the Adviser nor Sub-Adviser shall disclose or disseminate non-public information regarding the Portfolio, including a list of portfolio securities identified as being held by the Portfolio, which it receives or has access to in the course of performing its duties under this Agreement except as may be permitted by relevant Fund Procedures. Neither party shall use its knowledge of non-public information regarding the Portfolio as a basis to place or recommend any securities transactions for its own benefit, or the benefit of one or more of its clients, to the detriment of the Fund. To the extent that

either Party has delegated any duties or services to an affiliate or a third-party, it shall ensure that any such affiliate or third-party abides by the confidentiality provision of this Section 12. Each Party shall ensure that any such affiliate or third-party shall enter into a written confidentiality agreement providing for the non-disclosure of such non-public information. Notice of such agreement shall be provided to the Company.

13. [Reserved]

14.

Control. Notwithstanding any other provision of the Agreement, it is understood and agreed that the Company shall at all times reserve the right to reasonably direct any action hereunder taken on its behalf by the Sub-Adviser.

15.

Liability.

Except as may otherwise be required by the 1940 Act or the rules thereunder or other applicable law, the Adviser 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 or is a controlling person (“Controlling Person”) of the Sub-Adviser 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 gross negligence in the performance of the Sub-Adviser’s duties, or any breach by the Sub-Adviser of its obligations or duties under this Agreement.

The Sub-Adviser agrees that neither the Company nor the Fund shall bear any responsibility or shall be subject to any liability for any damages, expenses, or losses of Sub-Adviser connected with or arising out of its services under this Agreement, except to the extent that such damages, expense or loss (i) was as a result of actions taken or failed to be taken by the Company or the Adviser, (ii) was as a result of the willful misfeasance, bad faith, or gross negligence of the Adviser or any breach or reckless disregard of the Adviser’s obligations and duties to the Fund and its shareholders under the federal securities laws or the Code, (iii) any breach by the Adviser of its obligations or duties under this Agreement or the Advisory Agreement; or (iv) may be based upon any untrue statement or alleged untrue statement of a material fact contained in the Fund’s Registration Statement, prospectus or statement of additional information, or any amendment thereof or any supplement thereto, 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 by the Sub-Adviser to the Adviser.

16.

Indemnification.

The Adviser 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 is a Controlling Person the Sub-Adviser (the Sub-Adviser and all of such persons being referred to as “Sub-Adviser Indemnified Persons”) against any and all losses, claims, damages, liabilities, or litigation (including reasonable 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 Adviser’s responsibilities as Adviser to the Fund which (i) may be based upon the Adviser’s gross negligence, willful misfeasance, or bad faith in the performance of its duties, or by reason of the Adviser’s reckless disregard of its obligations and duties to the Fund and its shareholders under the federal securities laws or the Code, or (ii) may be based upon any untrue statement or alleged untrue statement of a material fact contained in the Fund’s Registration Statement, prospectus or statements of additional information, or any amendment thereof or any supplement thereto, 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 by a Sub-Adviser Indemnified Person to the Adviser or the Company or to any

affiliated person of the Adviser; 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 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 its obligations or duties under this Agreement.

Notwithstanding Section 15 of this Agreement, the Sub-Adviser agrees to indemnify and hold harmless the Adviser, any affiliated person of the Adviser, and any Controlling Person of the Adviser (the Adviser and all of such persons being referred to as “Adviser Indemnified Persons”) against any and all losses, claims, damages, liabilities, or litigation (including reasonable legal and other expenses) to which an Adviser Indemnified Person may become subject under the 1933 Act, 1940 Act, the Advisers Act, under any other statute, at common law or otherwise, arising out of the Sub-Adviser’s responsibilities as Sub-Adviser of the Portfolio which (i) may be based upon the Sub-Adviser’s gross negligence, willful misfeasance, or bad faith in the performance of its duties, or by reason of the Sub-Adviser’s reckless disregard of its obligations or duties under this Agreement, or (ii) may be based upon any untrue statement or alleged untrue statement of a material fact contained in the Fund’s Registration Statement, prospectus or statement of additional information, or any amendment or supplement thereto, 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, unless such statement or omission was made in reliance upon information furnished by an Adviser Indemnified Person to the Adviser or the Company or to any affiliated person of the Adviser; provided however, that in no case shall the indemnity in favor of the Adviser Indemnified Person be deemed to protect such person against any liability to which 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 its obligations or duties under this Agreement.

The Adviser shall not be liable under Paragraph (a) of this Section 16 with respect to any claim made against a Sub-Adviser Indemnified Person unless such Sub-Adviser Indemnified Person shall have notified the 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 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 Adviser of any such claim shall not relieve the Adviser from any liability which it may have to the Sub-Adviser Indemnified Person against whom such action is brought except to the extent the Adviser 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 Adviser 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 reasonably satisfactory to the Sub-Adviser Indemnified Person. If the Adviser assumes the defense of any such action and the selection of counsel by the Adviser to represent the Adviser 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 Adviser will, at its own expense, assume the defense with counsel to the Adviser and, also at its own expense, with separate counsel to the Sub-Adviser Indemnified Person, which counsel shall be reasonably satisfactory to the Adviser and to the Sub-Adviser Indemnified Person. The Adviser 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.

The Sub-Adviser shall not be liable under Paragraph (b) of this Section 16 with respect to any claim made against an Adviser Indemnified Person unless such Adviser 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 Adviser Indemnified Person (or after such Adviser 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 Adviser 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 Adviser Indemnified Person, the Sub-Adviser will be entitled to participate, at its own expense, in the defense thereof or, after notice to the Adviser Indemnified Person, to assume the defense thereof, with counsel reasonably satisfactory to the Adviser 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 Adviser Indemnified Person would result in a conflict of interests and therefore, would not, in the reasonable judgment of the Adviser Indemnified Person, adequately represent the interests of the Adviser 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 Adviser Indemnified Person, which counsel shall be reasonably satisfactory to the Sub-Adviser and to the Adviser Indemnified Person. The Sub-Adviser shall not have the right to compromise on or settle the litigation without the prior written consent of the Adviser Indemnified Person if the compromise or settlement results, or may result in a finding of wrongdoing on the part of the Adviser Indemnified Person.

17.

Duration and Termination.

This Agreement shall become effective on the date first stated above, subject to the condition that the Company’s Board, including a majority of those Directors who are not interested persons (as such term is defined in the 1940 Act) of the Adviser or the Sub-Adviser, shall have approved this Agreement in the manner required by the 1940 Act. Unless terminated as provided herein, this Agreement shall remain in full force and effect through and including the second anniversary of the execution of this Agreement and shall continue in full force and affect indefinitely thereafter, but only so long as such continuance is specifically approved at least annually by (a) the Board, or by the vote of a majority of the outstanding voting securities (as defined in the 1940 Act) of the Company, and (b) the vote of a majority of those Directors who are not interested persons (as such term is defined in the 1940 Act) of any such party to this Agreement cast in person at a meeting called for the purpose of voting on such approval.

Notwithstanding the foregoing, this Agreement may be terminated: (a) by the Adviser at any time without payment of any penalty, upon 60 days’ prior written notice to the Sub-Adviser and the Company provided, however, that the Adviser may terminate this Agreement immediately without penalty in the event Sub-Adviser is unable to adopt compliance techniques, in accordance with the terms of Section 10.a. of this Agreement or violates the Non-Use Agreement; (b) at any time without payment of any penalty by the Company, by the Company’s Board or a majority of the outstanding voting securities of the Company, upon 60 days’ prior written notice to the Adviser and the Sub-Adviser; or (c) by the Sub-Adviser upon 60 days prior written notice, provided, however, that the Sub-Adviser may terminate this Agreement at any time without penalty, effective upon written notice to the Adviser and the Company, in the event either the Sub-Adviser (acting in good faith) or the Adviser ceases to be registered as an investment adviser under the Advisers Act or otherwise becomes legally incapable of providing investment management services pursuant to its respective contract with the Company.

In the event of termination for any reason, all records of the Company shall promptly be returned to the Adviser or the Company, free 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 12, 14, 15, 16, 18 and 21 of this Agreement shall remain in effect, as well as any applicable provision of this Section 17 and, to the extent that only amounts are owed to the Sub-Adviser as compensation for services rendered while the agreement was in effect as provided in Section 7.

18.

Notices. Any notice must be in writing and shall be sufficiently given (a) when delivered in person, (b) when dispatched by electronic mail or electronic facsimile transfer (confirmed in writing by postage prepaid first class air mail simultaneously dispatched), (c) when sent by internationally recognized overnight courier service (with receipt confirmed by such overnight courier service), or (d) 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:

Calvert Variable Products, Inc.

Attn: Maureen Gemma

Two International Place

Boston, MA 02110

mgemma@eatonvance.com

If to the Adviser:

Calvert Research and Management

Attn: Maureen Gemma

Two International Place

Boston, MA 02110

mgemma@eatonvance.com

If to the Sub-Adviser:

Ameritas Investment Partners, Inc.

Attn: James Mikus

5945 R Street

Lincoln, NE 68505

Phone 402-467-6961

Fax 402-467-6970

jmikus@ameritas.com

19.

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 material amendment of this Agreement shall be effective until approved as required by applicable law. The Sub-Adviser shall furnish to the Board such information as may be reasonably necessary in order for the Board to evaluate this Agreement or any proposed amendments thereto for the purposes of casting a vote pursuant Section 17 or this Section 19 of this Agreement.

20.

No Third Party Beneficiaries. Nothing in this Agreement, express or implied, is intended to or shall confer upon any person not a party hereto any right, benefit or remedy of any nature whatsoever under or by reason of this Agreement, except as described in Section 21(b) of this Agreement. Without limiting the generality of the foregoing, nothing in this Agreement is intended to, or shall be read to, (i) create in any shareholder or person other than the Adviser or the Fund(s) in question (including without limitation any shareholder in any Fund) any direct, indirect, derivative or other rights against the Adviser or Sub-Adviser or (ii) create or give rise to any duty or obligation on the part of the Adviser or Sub-Adviser (including without limitation any fiduciary duty) to any shareholder or person other than a Fund, all of which rights, benefits, duties and obligations are hereby expressly excluded.

21.

Miscellaneous.

This Agreement shall be governed by and construed in accordance with the laws of the Commonwealth of Massachusetts, 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. Any legal action or proceeding with respect to this Agreement or the services provided hereunder or for recognition and enforcement of any judgment in respect hereof brought by the other party hereto or its successors or assigns may be brought and determined in the state courts of the Commonwealth of Massachusetts or the United States District Court for the District of Massachusetts and each party hereto submits with regard to any action or proceeding for itself and in respect of its property, generally and unconditionally, to the exclusive jurisdiction of the aforesaid courts. Each party hereby irrevocably waives, and agrees not to assert, by way of motion, as a defense, counterclaim or otherwise, in any action or proceeding with respect to this Agreement, (a) any claim that it is not personally subject to the jurisdiction of the above-named courts for any reason other than the failure to lawfully serve process, (b) that it or its property is exempt or immune from the jurisdiction of any such court or from any legal process commenced in such courts (whether through service of notice, attachment prior to judgment, attachment in aid of execution of judgment, execution of judgment or otherwise), and (c) to the fullest extent permitted by applicable law, that (i) the suit, action or proceeding in any such court is brought in an inconvenient forum, (ii) the venue of such suit, action or proceeding is improper and (iii) this Agreement, or the subject matter hereof, may not be enforced in or by such courts. The term “affiliate” or “affiliated person” as used in this Agreement shall mean “affiliated person” as defined in Section 2(a)(3) of the 1940 Act.

The Adviser and the Sub-Adviser acknowledge that the Company enjoys the rights of a third-party beneficiary under this Agreement, and the Adviser acknowledges that the Sub-Adviser enjoys the rights of a third party beneficiary under the Advisory Agreement.

The Sub-Adviser expressly acknowledges the provision in the Declaration of Trust of the Adviser (which is on file with the Secretary of the Commonwealth of Massachusetts) limiting the personal liability of the Trustee, officers, employees and agents of the Adviser, and the Sub-Adviser hereby agrees that it shall have recourse to the Adviser for payment of claims or obligations as between the Adviser and the Sub-Adviser arising out of this Agreement and shall not seek satisfaction from the Trustee or any officer, employee or agent of the Adviser.

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.

To the extent permitted under Section 17 of this Agreement, this Agreement may only be assigned by any party with the prior written consent of the other party.

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.

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

This Agreement may be executed in counterparts.

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

Calvert Research and Management

By: /s/ Katy D. Burke

Name: Katy D. Burke

Title: Vice President

Ameritas Investment Partners, Inc.

By: /s/ James Mikus

Name: James Mikus

Title: President & CEO