UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number: 811-10041 JNL Investors Series Trust (Exact name of registrant as specified in charter) 1 Corporate Way, Lansing, MI 48951 (Address of principal executive offices) (Zip code) Susan S. Rhee, Esq. Jackson National Asset Management, LLC 1 Corporate Way Lansing, MI 48951 (Name and address of agent for service) Registrant's telephone number, including area code: 517 381-5500 Date of fiscal year end: December 31 Date of reporting period: June 30, 2005 Item 1. Report to Shareholders. There is no Report to Shareholders since the Registrant has not commenced operation, but has been funded with seed money. Item 2. Code of Ethics. Not applicable to the semi-annual filing. Item 3. Audit Committee Financial Expert. Not applicable to the semi-annual filing. Item 4. Principal Accountant Fees and Services. Not applicable to the semi-annual filing. Item 5. Audit Committee of Listed Registrants. Not applicable as this is not a listed issuer as defined in Rule 10A-3 under the Exchange Act. Item 6. Schedule of Investments Included as a Part of the Report to Shareholders filed under Item 1. Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies. Not applicable as this is an Open-End Management Investment Company. Item 8. Portfolio Managers of Closed-End Management Investment Companies. Not applicable as this is an Open-End Management Investment Company. Item 9. Purchases of Equity Securties by Closed-End Management Investment Company and Affiliated Purchasers. Not applicable as this is an Open-End Management Investment Company. Item 10. Submission of Matters to a Vote of Security Holders. No material changes have been made. Item 11. Controls and Procedures. (a) In order to ensure that the information that we must disclose in our filings with the Securities and Exchange Commission is recorded, processed, summarized and reported on a timely basis, we have adopted disclosure controls and procedures. Our President and Chief Executive Officer, Robert A. Fritts, and our Chief Financial Officer, Mark D. Nerud, have reviewed and evaluated our disclosure controls and procedures as of August 22, 2005, and have concluded that our disclosure controls and procedures are effective. (b) There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant's first and second fiscal quarters of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. Item 12. Exhibits a. (1) Not applicable to the semi-annual filing. (2) The certifications required by Rule 30a-2 of the Investment Company Act of 1940, as amended, are attached hereto. (3) Not Applicable. b. (1)The certification required by Rule 30a-2(b) fo the Investment Company Act of 1940, as amended, and Section 906 of the Sarbanes-Oxley Act of 2002, is attached hereto. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized in the City of Lansing and State of Michigan, on the 1st day of September, 2005. JNL Investors Series Trust (Registrant) By: /s/ Robert A. Fritts ------------------------------ Robert A. Fritts, President Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, as amended, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. Signature Title Date /s/ Robert A. Fritts President September 1, 2005 - ----------------------------- Robert A. Fritts /s/ Mark D. Nerud Chief Financial Officer September 1, 2005 - ----------------------------- Mark D. Nerud EXHIBIT LIST Exhibit 12(a)(2) Certification of the Principal Executive Officer required by Rule 30a-2(a) under the Act. Certification of the Principal Financial Officer required by Rule 30a-2(a) under the Act. Exhibit 12(b)(1) Certification required by Rule 30a-2(b) under the Act.