Ex. 99.28(d)(40)(xii)

Amendment

to Amended and Restated

Investment Sub-Advisory Agreement Between

Jackson National Asset Management, LLC

and J.P. Morgan Investment Management Inc.

This Amendment is made by and between Jackson National Asset Management, LLC, a Michigan limited liability company and registered investment adviser (the “Adviser”), and J.P. Morgan Investment Management Inc., a Delaware corporation and registered investment adviser (the “Sub-Adviser”).

Whereas, the Adviser and the Sub-Adviser (the “Parties”) entered into an Amended and Restated Investment Sub-Advisory Agreement, effective as of the 1^st day of December, 2012, as amended (the “Agreement”), whereby the Adviser appointed the Sub-Adviser to provide certain sub-investment advisory services to certain investment portfolios (each, a “Fund”) of JNL Series Trust (the “Trust”), as listed on Schedule A to the Agreement.

Whereas, the Board of Trustees of the Trust has approved, and the Parties have agreed to amend Section 3. “Management”; and Section 12. “Duration and Termination” of the Agreement, effective September 6, 2019.

Now Therefore, in consideration of the mutual covenants herein contained, the Parties hereby agree to amend the Agreement as follows:

1) Sub-paragraph i) after “The Sub-Adviser further agrees that it:”, under Section 3. “Management,” shall be deleted and replaced, in its entirety, with the following:

i) will act upon reasonable instructions from Adviser (except as to the voting of proxies) not inconsistent with the fiduciary duties and Investment Objectives hereunder;

2) Sub-paragraph k) after “The Sub-Adviser further agrees that it:”, under Section 3. “Management,” shall be deleted and replaced, in its entirety, with the following:

k) Consistent with its fiduciary duties to each Fund and on the Fund’s behalf, the Sub-Adviser is hereby appointed the Fund’s agent to exercise in its direction all rights and performs all duties with respect to the Fund’s right to vote (or refrain from voting), each Fund’s securities and exercise rights in corporate actions or otherwise in accordance with the Sub-Adviser’s proxy voting guidelines, as amended from time to time, which shall be provided to the Trust and the Adviser. For the avoidance of doubt, the Sub-Adviser will have full discretion in this regard and the Adviser will not attempt to influence the Sub-Adviser’s voting decisions. The Sub-Adviser further agrees to report significant shareholdings as required by applicable law. The Adviser agrees to instruct the Fund’s custodian to forward all proxy materials and related shareholder communications to Sub-Adviser promptly upon receipt. The Sub-Adviser shall not be liable with regard to voting of proxies or other corporate actions if the proxy materials and related communications are not received in a timely manner. With respect to the JNL/JPMorgan Global Allocation Fund, Sub-Adviser shall not be required to take any action or render any advice with respect to any legal proceedings, including bankruptcies, involving securities, or the issuers thereof, held in that Fund prior to the date that Fund was added to this Agreement;

3) Section 12. “Duration and Termination,” shall be deleted and replaced, in its entirety, with the following:

Duration and Termination. The Agreement will become effective as to a Fund upon execution or, if later, on the date that initial capital for such Fund is first provided to it and, unless sooner terminated as provided herein, will continue in effect for two years from the effective date of the initial Investment Sub-Advisory Agreement with regard to all Fund(s) covered by this

Agreement.  Thereafter, if not terminated as to a Fund, this Agreement will continue from year to year through September 30th of each successive year following the initial two year period, for each Fund covered by this Agreement, as listed on Schedule A, provided that such continuation is specifically approved at least annually by the Trust’s Board of Trustees or by vote of a majority of the outstanding voting securities of such Fund(s), and in either event approved also by a majority of the Trustees of the Trust who are not interested persons of the Trust, or of the Adviser, or of the Sub-Adviser (“Independent Trustees”). Notwithstanding the foregoing, this Agreement may be terminated as to a Fund at any time, without the payment of any penalty, by the Board, including a majority of the Independent Trustees, or by the vote of a majority of the outstanding voting securities of each Fund, or by the Adviser with the consent of the Board (including a majority of the Independent Trustees), each on sixty days’ written notice to the Adviser and the Sub-Adviser, or by the Sub-Adviser on sixty days’ written notice to the Trust and the Adviser.  This Agreement will immediately terminate in the event of its assignment.  (As used in this Agreement, the terms “majority of the outstanding voting securities”, “interested persons” and “assignment” have the same meaning of such terms as in the 1940 Act.)  Section 10 and 11 herein shall survive the termination of this Agreement.

4) Except as specifically amended hereby, the Agreement shall remain in full force and effect in accordance with its terms.

5) Each of the Parties represents and warrants to the others that it has full authority to enter into this Amendment upon the terms and conditions hereof and that the individual executing this Amendment is duly authorized to bind the respective party to this Amendment.

6) This Amendment may be executed in one or more counterparts, which together shall constitute one document.

In Witness Whereof, the Parties have caused this Amendment to be executed, effective September 6, 2019.

Jackson National Asset Management, LLC		J.P. Morgan Investment Management Inc.
By:	/s/ Mark D. Nerud	By:	/s/ Ana Brands
Name:	Mark D. Nerud	Name:	Ana Brands
Title:	President and CEO	Title:	Vice President

Page 2 of 2