# EDGAR Filing Document

**Accession Number:** 0001121257
**File Stem:** 0001999371-25-020157
**Filing Date:** 2025-12
**Character Count:** 2425
**Document Hash:** e863b33dcf47963aac84774f8b2af763
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001999371-25-020157.hdr.sgml**: 20251212

**ACCESSION NUMBER**: 0001999371-25-020157

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 16

**FILED AS OF DATE**: 20251212

**DATE AS OF CHANGE**: 20251212

**EFFECTIVENESS DATE**: 20251212

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** JNL INVESTORS SERIES TRUST
- **CENTRAL INDEX KEY:** 0001121257

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-43300
- **FILM NUMBER:** 251566699

**BUSINESS ADDRESS:**
- **STREET 1:** 1 CORPORATE WAY
- **STREET 2:** ATTN: LEGAL DEPARTMENT
- **CITY:** LANSING
- **STATE:** MI
- **ZIP:** 48951
- **BUSINESS PHONE:** (517)381-5500

**MAIL ADDRESS:**
- **STREET 1:** 1 CORPORATE WAY
- **STREET 2:** 8N41
- **CITY:** LANSING
- **STATE:** MI
- **ZIP:** 48951

## Series and Classes Contracts Data

### JNL GOVERNMENT MONEY MARKET FUND (Series ID: S000001684)

---

|  |  |
|:---|:---|
| Class Name                                  | Class ID   |
| JNL Government Money Market Fund (Class I)  | C000004572 |
| JNL Government Money Market Fund (Class SL) | C000243435 |

---

## Series and Classes Contracts Data

### JNL GOVERNMENT MONEY MARKET FUND (Series ID: S000001684)

| Class ID   | Class Name                                  | Ticker Symbol   |
|:---|:---|:---|
| C000004572 | JNL Government Money Market Fund (Class I)  |  |
| C000243435 | JNL Government Money Market Fund (Class SL) |  |

?xml version='1.0' encoding='ASCII'?

**Supplement Dated** December 12, 2025**

**To The Prospectus Dated April 28, 2025**

**JNL<sup>®</sup> Investors Series Trust**

*Effective December 31, 2025, for the JNL Government Money Market Fund, please change all references to the Bloomberg USD 1 Month Cash Deposit Index to the Bloomberg USD 1 Month Swap Rate Cash Deposit Index.*

 

*This Supplement is dated December 12, 2025.*

**Supplement Dated** December 12, 2025**

**To The Statement of Additional Information Dated April 28, 2025**

**JNL<sup>®</sup> Investors Series Trust**

*Effective December 31, 2025, for the JNL Government Money Market Fund, please change all references to the Bloomberg USD 1 Month Cash Deposit Index to the Bloomberg USD 1 Month Swap Rate Cash Deposit Index.*

 

*This Supplement is dated December 12, 2025.*