# EDGAR Filing Document

**Accession Number:** 0000842790
**File Stem:** 0001193125-25-157904
**Filing Date:** 2025-7
**Character Count:** 5640
**Document Hash:** 63226b11ea9c09f22ba7dc1d534c5cc6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-157904.hdr.sgml**: 20250711

**ACCESSION NUMBER**: 0001193125-25-157904

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250711

**DATE AS OF CHANGE**: 20250711

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AIM INVESTMENT SECURITIES FUNDS (INVESCO INVESTMENT SECURITIES FUNDS)
- **CENTRAL INDEX KEY:** 0000842790

**ORGANIZATION NAME:**
- **EIN:** 760343427
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0228

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 811-05686
- **FILM NUMBER:** 251117701

**BUSINESS ADDRESS:**
- **STREET 1:** 11 GREENWAY PLAZA
- **STREET 2:** SUITE 1000
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77046
- **BUSINESS PHONE:** 7136261919

**MAIL ADDRESS:**
- **STREET 1:** 11 GREENWAY PLAZA
- **STREET 2:** SUITE 1000
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77046

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AIM INVESTMENT SECURITIES FUNDS
- **DATE OF NAME CHANGE:** 20000921

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AIM INVESTMENT SECURITIES FUNDS INC
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AIM PRIME RATE PREMIUM INCOME FUND INC
- **DATE OF NAME CHANGE:** 19910320

## Series and Classes Contracts Data

### INVESCO Real Estate Fund (Series ID: S000000255)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000000616 | Class A        | IARAX           |
| C000000618 | Class C        | IARCX           |
| C000000619 | Class R        | IARRX           |
| C000000620 | Investor Class | REINX           |
| C000023123 | CLASS R5       | IARIX           |
| C000071216 | Class Y        | IARYX           |
| C000120676 | Class R6       | IARFX           |

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**SCHEDULE 14A** 

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Filed by the Registrant [X]

Filed by a Party other than the Registrant [ ]

Check the appropriate box:

[ ] Preliminary Proxy Statement

[ ] Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

[ ] Definitive Proxy Statement

[ X ] Definitive Additional Materials

[ ] Soliciting Material Pursuant to § 240.14a-11(c) or § 240.14a-12 

<u>AIM INVESTMENT SECURITIES FUNDS (INVESCO INVESTMENT SECURITIES FUNDS)</u> 

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[X] No fee required.

[ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

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| |
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| 1) Title of each class of securities to which transaction applies: |
| 2) Aggregate number of securities to which transaction applies: |
| 3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined): |
| 4) Proposed maximum aggregate value of transaction: |
| 5) Total fee paid: |

---

[ ] Fee paid previously with preliminary materials.

[ ] Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

---

| |
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| 1) Amount Previously Paid: |
| 2) Form, Schedule or Registration Statement No.: |
| 3) Filing Party: |
| 4) Date Filed: |

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![LOGO](g22003g0709051232059.jpg)

## Invesco Real Estate Fund
**July 10, 2025 Special Meeting of Shareholders Adjourned** 

**Until July 31, 2025** 

July 10, 2025

Dear Shareholder,

Because you are a shareholder of the Invesco Real Estate Fund (the "Fund"), a series of AIM Investment Securities Funds (the "Trust"), we are informing you that the Special Meeting of Shareholders (the "Meeting") of the Fund scheduled for July 10, 2025 has been adjourned until July 31, 2025. The purpose of the Meeting is to vote on a proposal to change the Fund's sub-classification from "diversified" to "non-diversified" and to eliminate the related fundamental investment restriction, which will allow the Fund more flexibility to focus on high-conviction investment ideas and better position it to seek potential improved performance. Between now and July 31, shareholder votes on the proposal will continue to be received and counted.

No matter how many shares you own, your vote matters. We ask that you please join your fellow shareholders who have already voted by signing, dating, and mailing your proxy card in the postage paid return envelope today. Or, to make voting easier, simply follow the voting instructions on your proxy card to vote online or by phone. You do not have to wait until the day of the meeting to vote your shares.

**The Board of Trustees of the Trust unanimously supports, and recommends all Shareholders vote FOR, the proposal.** 

We are encouraged that a significant majority of shares have already voted to support the proposal, consistent with the Board's recommendation.

If you have any questions regarding the proxy or need assistance in voting, please call our proxy solicitor, Sodali Fund Services, at **1-888-705-5299**.

Thank you in advance for your support.

To receive a free copy of the Proxy Statement, please call the Fund's solicitor toll free at 1-888-705-5299 or go to <u>https://proxyvotinginfo.com/p/invre</u>

INVRE ADJ1