# EDGAR Filing Document

**Accession Number:** 0000764624
**File Stem:** 0001655589-26-000428
**Filing Date:** 2026-4
**Character Count:** 6678
**Document Hash:** 391309bdb26eafb29ddf970652b950ba
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001655589-26-000428.hdr.sgml**: 20260417

**ACCESSION NUMBER**: 0001655589-26-000428

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260417

**DATE AS OF CHANGE**: 20260417

**EFFECTIVENESS DATE**: 20260417

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** LEGG MASON PARTNERS INCOME TRUST
- **CENTRAL INDEX KEY:** 0000764624

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 0731

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-96408
- **FILM NUMBER:** 26869664

**BUSINESS ADDRESS:**
- **STREET 1:** LEGG MASON & CO., LLC
- **STREET 2:** 620 EIGHTH AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10018
- **BUSINESS PHONE:** 1-877-721-1926

**MAIL ADDRESS:**
- **STREET 1:** LEGG MASON & CO., LLC
- **STREET 2:** 620 EIGHTH AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10018

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** LEGG MASON PARTNERS INCOME FUNDS
- **DATE OF NAME CHANGE:** 20060407

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SMITH BARNEY INCOME FUNDS
- **DATE OF NAME CHANGE:** 19941228

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SMITH BARNEY SHEARSON INCOME FUNDS
- **DATE OF NAME CHANGE:** 19931015

## Series and Classes Contracts Data

### Western Asset Ultra-Short Income Fund (Series ID: S000016624)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | ARMZX         | C000046410 |
| Class C    | LWAIX         | C000046412 |
| Class I    | SBAYX         | C000046413 |
| Class R    | nan           | C000068525 |
| Class C1   | ARMGX         | C000080302 |
| Class IS   | ARMLX         | C000118948 |

---

## Series and Classes Contracts Data

### Western Asset Ultra-Short Income Fund (Series ID: S000016624)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000046410 | Class A      | ARMZX           |
| C000046412 | Class C      | LWAIX           |
| C000046413 | Class I      | SBAYX           |
| C000068525 | Class R      |  |
| C000080302 | Class C1     | ARMGX           |
| C000118948 | Class IS     | ARMLX           |

90063-P1 04/26

---

| | |
|:---|:---|
| ![](img_9cb0d8265a594f1.jpg) | ![](img_18f0ca3dee1e4f1.jpg) |

---

**LEGG MASON PARTNERS INCOME TRUST**<br>**SUPPLEMENT DATED APRIL 17, 2026** <br>**TO THE SUMMARY PROSPECTUS, PROSPECTUS AND**<br>**STATEMENT OF ADDITIONAL INFORMATION ("SAI")** <br>**DATED OCTOBER 1, 2025, OF** <br>**WESTERN ASSET ULTRA-SHORT INCOME FUND (THE "FUND")**

#### All changes described below are effective May 1, 2026.
&nbsp;&nbsp;&nbsp;&nbsp;**I. The following is added to the section titled "Management – Investment professionals" in the Fund's Summary Prospectus and Prospectus, respectively:** 

---

| | | |
|:---|:---|:---|
| **Investment professional** | **Title** | **Investment**<br>**professional of**<br>**the fund since** |
| Mark S. Lindbloom | Deputy CIO, Portfolio Manager | May 2026 |
| Amit Chopra | Portfolio Manager | May 2026 |
| Rafael Zielonka | Portfolio Manager | May 2026 |

---

&nbsp;&nbsp;&nbsp;&nbsp;**II. The following is added to the section titled "More on fund management – Investment professionals" in the Fund's Prospectus:** 

---

| | | |
|:---|:---|:---|
| **Investment professional** | **Title and recent**<br>**biography** | **Investment**<br>**professional of**<br>**the fund since** |
| Mark S. Lindbloom | Deputy CIO, Portfolio Manager and has been employed by Western Asset as an investment professional for at least the past five years. | May 2026 |

---

------

---

| | | |
|:---|:---|:---|
| **Investment professional** | **Title and recent**<br>**biography** | **Investment**<br>**professional of**<br>**the fund since** |
| Amit Chopra | Portfolio Manager and has been employed by Western Asset as an investment professional for at least the past five years. | May 2026 |
| Rafael Zielonka | Portfolio Manager and has been employed by Western Asset as an investment professional for at least the past five years. | May 2026 |

---

&nbsp;&nbsp;&nbsp;&nbsp;**III. The following is added to the table in the section titled "Investment Professionals – Other Accounts Managed by the Investment Professionals" in the Fund's SAI:** 

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Investment**<br>**Professionals**<br>| **Type of**<br>**Account**<br>| **Number of**<br>**Accounts**<br>**Managed** <br>| **Total Assets**<br>**Managed**<br>**(Billions) ($)** <br>| **Number of**<br>**Accounts**<br>**Managed for**<br>**which Advisory**<br>**Fee is**<br>**Performance-**<br>**Based** <br>| **Assets<br>Managed for<br>which** <br>**Advisory**<br>**Fee is**<br>**Performance-**<br>**Based**<br>**(Billions) ($)**<br>|
| Amit <br>Chopra\* | &nbsp;&nbsp;&nbsp;&nbsp;Registered Investment Companies | 9 | 7.14 |  |  |
|  | &nbsp;&nbsp;&nbsp;&nbsp;Other Pooled Investment Vehicles | 4 | 0.53 |  |  |
|  | &nbsp;&nbsp;&nbsp;&nbsp;Other Accounts | 37 | 16.46 |  |  |
| Mark S. <br>Lindbloom\* | &nbsp;&nbsp;&nbsp;&nbsp;Registered Investment Companies | 13 | 9.91 |  |  |
|  | &nbsp;&nbsp;&nbsp;&nbsp;Other Pooled Investment Vehicles | 11 | 2.52 |  |  |
|  | &nbsp;&nbsp;&nbsp;&nbsp;Other Accounts | 53 | 20.04 |  |  |

---

------

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Investment**<br>**Professionals**<br>| **Type of**<br>**Account**<br>| **Number of**<br>**Accounts**<br>**Managed** <br>| **Total Assets**<br>**Managed**<br>**(Billions) ($)** <br>| **Number of**<br>**Accounts**<br>**Managed for**<br>**which Advisory**<br>**Fee is**<br>**Performance-**<br>**Based** <br>| **Assets<br>Managed for<br>which** <br>**Advisory**<br>**Fee is**<br>**Performance-**<br>**Based**<br>**(Billions) ($)**<br>|
| Rafael <br>Zielonka\* | &nbsp;&nbsp;&nbsp;&nbsp;Registered Investment Companies | 5 | 4.11 |  |  |
|  | &nbsp;&nbsp;&nbsp;&nbsp;Other Pooled Investment Vehicles | 5 | 1.45 |  |  |
|  | &nbsp;&nbsp;&nbsp;&nbsp;Other Accounts | 4 | 0.73 |  |  |

---

\* The information is as of March 31, 2026.

&nbsp;&nbsp;&nbsp;&nbsp;**IV. The following is added to the table in the section titled "Investment Professionals – Investment Professional Securities Ownership" in the Fund's SAI:** 

---

| | |
|:---|:---|
| **Investment Professionals**<br>| **Dollar Range of Ownership of Securities ($)** <br>|
| Amit Chopra\* | &nbsp;&nbsp;&nbsp;None |
| Mark S. Lindbloom\* | &nbsp;&nbsp;&nbsp;None |
| Rafael Zielonka\* | &nbsp;&nbsp;&nbsp;None |

---

\* The information is as of March 31, 2026.

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

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