# EDGAR Filing Document

**Accession Number:** 0000106444
**File Stem:** 0001683863-23-000549
**Filing Date:** 2023-1
**Character Count:** 2382
**Document Hash:** 51441c02ec1d25fb4319574fef237029
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001683863-23-000549.hdr.sgml**: 20230131

**ACCESSION NUMBER**: 0001683863-23-000549

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20230131

**DATE AS OF CHANGE**: 20230130

**EFFECTIVENESS DATE**: 20230131

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** VANGUARD FIXED INCOME SECURITIES FUNDS
- **CENTRAL INDEX KEY:** 0000106444
- **IRS NUMBER:** 231899003
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0131

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-47371
- **FILM NUMBER:** 23569349

**BUSINESS ADDRESS:**
- **STREET 1:** PO BOX 2600
- **STREET 2:** V26
- **CITY:** VALLEY FORGE
- **STATE:** PA
- **ZIP:** 19482
- **BUSINESS PHONE:** 6106691000

**MAIL ADDRESS:**
- **STREET 1:** PO BOX 2600
- **STREET 2:** V26
- **CITY:** VALLEY FORGE
- **STATE:** PA
- **ZIP:** 19482

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** VANGUARD FIXED INCOME SECURITIES FUND INC
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WESTMINSTER BOND FUND INC
- **DATE OF NAME CHANGE:** 19800619

## Series and Classes Contracts Data

### Vanguard Ultra-Short-Term Bond Fund (Series ID: S000048081)

---

|  |  |  |
|:---|:---|:---|
| Class Name      | Ticker Symbol | Class ID   |
| Admiral Shares  | VUSFX         | C000151975 |
| Investor Shares | VUBFX         | C000151976 |

---

## Series and Classes Contracts Data

### Vanguard Ultra-Short-Term Bond Fund (Series ID: S000048081)

| Class ID   | Class Name      | Ticker Symbol   |
|:---|:---|:---|
| C000151975 | Admiral Shares  | VUSFX           |
| C000151976 | Investor Shares | VUBFX           |

![](vanguard.jpg)

Vanguard Ultra-Short-Term Bond Fund

**Supplement Dated January 31, 2023, to the Prospectus and Summary Prospectus Dated May 31, 2022**

**Important Changes to Vanguard Ultra-Short-Term Bond Fund (the Fund)**

Effective immediately, Samuel C. Martinez will no longer serve as portfolio manager of the Fund.

Accordingly, all references to Samuel C. Martinez are hereby deleted in their entirety.

The Fund's investment objective, strategies, and policies remain unchanged.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;© 2023 The Vanguard Group, Inc. All rights reserved.

Vanguard Marketing Corporation, Distributor.PS 1492A 012023

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