# EDGAR Filing Document

**Accession Number:** 0000809707
**File Stem:** 0001655589-26-000486
**Filing Date:** 2026-4
**Character Count:** 3784
**Document Hash:** 5c97f1c2014cfa91c21fd7538aa87513
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001655589-26-000486.hdr.sgml**: 20260417

**ACCESSION NUMBER**: 0001655589-26-000486

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260417

**DATE AS OF CHANGE**: 20260417

**EFFECTIVENESS DATE**: 20260417

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Franklin Investors Securities Trust
- **CENTRAL INDEX KEY:** 0000809707

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** FL
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-11444
- **FILM NUMBER:** 26869777

**BUSINESS ADDRESS:**
- **STREET 1:** ONE FRANKLIN PARKWAY
- **CITY:** SAN MATEO
- **STATE:** CA
- **ZIP:** 94403-1906
- **BUSINESS PHONE:** 650-312-2200

**MAIL ADDRESS:**
- **STREET 1:** ONE FRANKLIN PARKWAY
- **CITY:** SAN MATEO
- **STATE:** CA
- **ZIP:** 94403-1906

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FRANKLIN INVESTORS SECURITIES TRUST
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### FRANKLIN LOW DURATION TOTAL RETURN FUND (Series ID: S000006855)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000018523 | Class A       | FLDAX           |
| C000064444 | Advisor Class | FLDZX           |
| C000120960 | Class C       | FLDCX           |
| C000128881 | Class R6      | FLRRX           |
| C000215060 | Class R       | FLPRX           |

#### 401-P1 04/26

#### FRANKLIN INVESTORS SECURITIES TRUST

#### SUPPLEMENT DATED APRIL 17, 2026

#### TO THE SUMMARY PROSPECTUS, PROSPECTUS AND

#### STATEMENT OF ADDITIONAL INFORMATION ("SAI")

#### EACH DATED MARCH 1, 2026, OF

#### FRANKLIN LOW DURATION TOTAL RETURN FUND (THE "FUND")

#### All changes described below are effective June 30, 2026.
**1. The following replaces the reference to Kent Burns in the section titled "Fund Summary – Portfolio Managers" in the Fund's Summary Prospectus and Prospectus:** 

**Andrew Bryant**<br>Portfolio Manager of Advisers and portfolio manager of the Fund since June 2026.

**2. The following replaces the reference to Kent Burns in the section titled "Fund Details – Management" in the Fund's Prospectus:**

#### Andrew Bryant Portfolio Manager of Advisers
Mr. Bryant has been a portfolio manager of the Fund since June 2026. He joined Franklin Templeton in 2024. Prior to joining Franklin Templeton, Mr. Bryant was a research analyst for Putnam Investment Management, LLC ("Putnam Management"). He joined Putnam Management in 2015.

**3. The following replaces references to Kent Burns in the table in the section titled "Management and Other Services – Portfolio managers" in the Fund's SAI:** 

------

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Name** | **Type of<br>Account** | **Number of**<br>**Accounts**<br>**Managed** | **Total Assets**<br>**Managed**<br>**(x $1 million)** | **Number of Accounts** <br>**Managed for which** <br>**Advisory Fee is** <br>**Performance-Based** | **Assets Managed for which** <br>**Advisory Fee is** <br>**Performance-Based** <br>**(x $1 million)** |
| Andrew D. Bryant\* | Registered<br>Investment<br>Companies |  |  |  |  |
|  | Other Pooled<br>Investment<br>Vehicles |  |  |  |  |
|  | Other<br>Accounts |  |  |  |  |

---

\*Information is provided as of February 28, 2026.

**4. The following replaces references to Kent Burns in the table in the section titled "Management and Other Services – Portfolio managers – Ownership of Fund shares" in the Fund's SAI:**

---

| | |
|:---|:---|
| **Portfolio Manager** | **Dollar Range of Fund Shares Beneficially Owned** |
| Andrew D. Bryant\* | None |

---

\*Information is provided as of March 31, 2026.

#### Please retain this supplement for future reference.

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