Form 485BXT JNL SERIES TRUST

As filed with the Securities and Exchange Commission on April 12, 2024.

1933 Act Registration No. 33-87244

1940 Act Registration No. 811-8894

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

[X]

Pre-Effective Amendment No. [   ]

[   ]

Post-Effective Amendment No. 190

[X]

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940

[X]

Amendment No. 191

JNL SERIES TRUST

(Exact Name of Registrant as Specified in Charter)

1 Corporate Way, Lansing, Michigan 48951

(Address of Principal Executive Offices) (Zip Code)

Registrant’s Telephone Number, including Area Code: (517) 381-5500

225 West Wacker Drive, Suite 1200, Chicago Illinois 60606

(Mailing Address)

with a copy to:

Emily J. Bennett, Esq.

Ropes & Gray LLP

JNL Series Trust

32nd Floor

Assistant Secretary

191 North Wacker Drive

1 Corporate Way

Chicago, Illinois 60606

Lansing, Michigan 48951

Attn:  Paulita A. Pike, Esq.

(Name and Address of Agent for Service)

It is proposed that this filing will become effective (check appropriate box)

[  ]

immediately upon filing pursuant to paragraph (b)

[X]

on April 29, 2024, pursuant to paragraph (b)

[  ]

60 days after filing pursuant to paragraph (a)(1)

[  ]

on __________ pursuant to paragraph (a)(1)

[  ]

75 days after filing pursuant to paragraph (a)(2)

[  ]

on (date) pursuant to paragraph (a)(2) of Rule 485

[X]

This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

EXPLANATORY NOTE: Pursuant to Rule 485(b)(1)(iii) of the Securities Act of 1933, the sole purpose of this Post-Effective Amendment No. 190 is to designate a new effective date for the Post-Effective Amendment No. 187, which was filed on December 6, 2023 (Accession No. 000933691-23-000397). Parts A, B and C of Post-Effective Amendment No. 187 are unchanged and hereby incorporated by reference.

SIGNATURES

Pursuant to the requirements of the Securities Act and the Investment Company Act, the Trust certifies that it meets all of the requirements for effectiveness of this Post-Effective Amendment under rule 485(b) under the Securities Act and has duly caused this Post-Effective Amendment to be signed on its behalf by the undersigned, duly authorized, in the City of Lansing and the State of Michigan on the 12th day of April, 2024.

JNL SERIES TRUST

/s/ Emily J. Bennett

Emily J. Bennett

Vice President and Assistant Secretary

*Attorney-in-Fact, pursuant to Powers of Attorney

Pursuant to the requirements of the Securities Act, this Post-Effective Amendment has been signed below by the following persons in the capacities and on the date indicated.

/s/ Emily J. Bennett *

April 12, 2024

Eric O. Anyah

Trustee

/s/ Emily J. Bennett *

April 12, 2024

Michael Bouchard

Trustee

/s/ Emily J. Bennett *

April 12, 2024

Ellen Carnahan

Trustee

/s/ Emily J. Bennett *

April 12, 2024

John W. Gillespie

Trustee

/s/ Emily J. Bennett *

April 12, 2024

William R. Rybak

Trustee

/s/ Emily J. Bennett *

April 12, 2024

Mark S. Wehrle

Trustee

/s/ Emily J. Bennett *

April 12, 2024

Edward C. Wood

Trustee

/s/ Emily J. Bennett *

April 12, 2024

Patricia A. Woodworth

Trustee

/s/ Emily J. Bennett *

April 12, 2024

Mark D. Nerud

Trustee, President and Chief Executive Officer (Principal Executive Officer)

April 12, 2024

Andrew Tedeschi

Treasurer and Chief Financial Officer (Principal Financial Officer)