# EDGAR Filing Document

**Accession Number:** 0000842790
**File Stem:** 0001193125-26-283761
**Filing Date:** 2026-6
**Character Count:** 29163
**Document Hash:** 6cb5ed38f644efbc9ce917aa89fbc04c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-283761.hdr.sgml**: 20260626

**ACCESSION NUMBER**: 0001193125-26-283761

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260626

**DATE AS OF CHANGE**: 20260626

**EFFECTIVENESS DATE**: 20260626

**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:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-39519
- **FILM NUMBER:** 261123744

**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 Government Money Market Fund (Series ID: S000000253)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000000609 | Class C              |  |
| C000000610 | Class R              |  |
| C000000611 | Invesco Cash Reserve | AIMXX           |
| C000023120 | Investor Class       | INAXX           |
| C000071214 | Class Y              |  |
| C000085152 | CLASS AX             | ACZXX           |
| C000085154 | CLASS CX             | ACXXX           |
| C000188950 | Class R6             |  |
| C000217953 | Class A              |  |

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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| | |
|:---|:---|
| **Summary Prospectus** | **June 26, 2026** |

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**Invesco Government Money Market Fund**

Class: Invesco Cash Reserve (AIMXX), A (ADAXX), AX (ACZXX), C (ACNXX), CX (ACXXX), R (AIRXX), Y (AIYXX), Investor (INAXX), R6 (INVXX)

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![](g369947invesco_global.jpg)

Before you invest, you may want to review the Fund's prospectus, which contains more information about the Fund and its risks. You can find the Fund's prospectus, reports to shareholders, and other information about the Fund online at www.invesco.com/prospectus. You can also get this information at no cost by calling (800) 959-4246 or by sending an e-mail request to ProspectusRequest@invesco.com. The Fund's prospectus and statement of additional information, both dated June 26, 2026 (as each may be amended or supplemented), are incorporated by reference into this Summary Prospectus and may be obtained, free of charge, at the website, phone number or e-mail address noted above.

**Investment Objective(s)**

The Fund's investment objective is to provide current income consistent with preservation of capital and liquidity.

**Fees and Expenses of the Fund**

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund.

**The table and Examples below do not reflect any transaction fees that may be charged by financial intermediaries, or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling Class Y and Class R6 shares.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Shareholder Fees** (fees paid directly from your investment) | **Shareholder Fees** (fees paid directly from your investment) | **Shareholder Fees** (fees paid directly from your investment) | **Shareholder Fees** (fees paid directly from your investment) | **Shareholder Fees** (fees paid directly from your investment) | **Shareholder Fees** (fees paid directly from your investment) | **Shareholder Fees** (fees paid directly from your investment) | **Shareholder Fees** (fees paid directly from your investment) | **Shareholder Fees** (fees paid directly from your investment) | **Shareholder Fees** (fees paid directly from your investment) |
| **Class:** | **Invesco**<br> **Cash** <br> **Reserve**<br>| **A** | **AX** | **C** | **CX** | **R** | **Y** | **Investor** | **R6** |
| Maximum Sales <br> Charge (Load) <br> Imposed on <br> Purchases (as a <br> percentage of <br> offering price)<br>|  |  |  |  |  |  |  |  |  |
| Maximum <br> Deferred Sales <br> Charge (Load) (as <br> a percentage of <br> original purchase <br> price or <br> redemption <br> proceeds, <br> whichever is less)<br>| None<sup>1</sup> <br>|  |  | 1.00<br> %<br>| 1.00<br> %<br>|  |  |  |  |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the <br> value of your investment)  | **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the <br> value of your investment)  | **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the <br> value of your investment)  | **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the <br> value of your investment)  | **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the <br> value of your investment)  | **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the <br> value of your investment)  | **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the <br> value of your investment)  | **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the <br> value of your investment)  | **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the <br> value of your investment)  | **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the <br> value of your investment)  |
| **Class:**  | **Invesco** <br>**Cash** <br>**Reserve** <br>| **A**  | **AX**  | **C**  | **CX**  | **R**  | **Y**  | **Investor**  | **R6**  |
| Management <br> Fees <br>| 0.15<br> % <br>| 0.15<br> % <br>| 0.15<br> % <br>| 0.15<br> % <br>| 0.15<br> % <br>| 0.15<br> % <br>| 0.15<br> % <br>| 0.15<br> % <br>| 0.15<br> % <br>|
| Distribution and/or <br> Service (12b-1) <br> Fees <br>| 0.15<br>| 0.20<br>| 0.15<br>| 0.75<br>| 0.90<br>| 0.40<br>|  |  |  |
| Other Expenses  | 0.16<br>| 0.16<br>| 0.16<br>| 0.16<br>| 0.16<br>| 0.16<br>| 0.16<br>| 0.16<br>| 0.09<br>|
| Total Annual Fund <br> Operating <br> Expenses <br>| 0.46<br>| 0.51<br>| 0.46<br>| 1.06<br>| 1.21<br>| 0.71<br>| 0.31<br>| 0.31<br>| 0.24<br>|

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

1 A contingent deferred sales charge may apply in some cases. See "Shareholder Account Information-Contingent Deferred Sales Charges (CDSCs)."

**Example.** This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. This Example does not include commissions and/or other forms of compensation that investors may pay on transactions in Class Y and Class R6 shares. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **1 Year**  | **3 Years**  | **5 Years**  | **10 Years**  |
| Invesco Cash Reserve  | $47<br>| &nbsp;&nbsp; $148<br>| &nbsp;&nbsp; $258<br>| &nbsp;&nbsp; $579<br>|
| Class A  | $52<br>| &nbsp;&nbsp; $164<br>| &nbsp;&nbsp; $285<br>| &nbsp;&nbsp; $640<br>|
| Class AX  | $47<br>| &nbsp;&nbsp; $148<br>| &nbsp;&nbsp; $258<br>| &nbsp;&nbsp; $579<br>|
| Class C  | $208<br>| &nbsp;&nbsp; $337<br>| &nbsp;&nbsp; $585<br>| &nbsp;&nbsp; $1139<br>|
| Class CX  | $223<br>| &nbsp;&nbsp; $384<br>| &nbsp;&nbsp; $665<br>| &nbsp;&nbsp; $1271<br>|
| Class R  | $73<br>| &nbsp;&nbsp; $227<br>| &nbsp;&nbsp; $395<br>| &nbsp;&nbsp; $883<br>|
| Class Y  | $32<br>| &nbsp;&nbsp; $100<br>| &nbsp;&nbsp; $174<br>| &nbsp;&nbsp; $393<br>|
| Investor Class  | $32<br>| &nbsp;&nbsp; $100<br>| &nbsp;&nbsp; $174<br>| &nbsp;&nbsp; $393<br>|
| Class R6  | $25<br>| &nbsp;&nbsp; $77<br>| &nbsp;&nbsp; $135<br>| &nbsp;&nbsp; $306<br>|

---

You would pay the following expenses if you did not redeem your shares:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

**1 Invesco Government Money Market Fund**

**invesco.com/us**GMKT-SUMPRO-1

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **1 Year**  | **3 Years**  | **5 Years**  | **10 Years**  |
| Invesco Cash Reserve  | $47<br>| &nbsp;&nbsp; $148<br>| &nbsp;&nbsp; $258<br>| &nbsp;&nbsp; $579<br>|
| Class A  | $52<br>| &nbsp;&nbsp; $164<br>| &nbsp;&nbsp; $285<br>| &nbsp;&nbsp; $640<br>|
| Class AX  | $47<br>| &nbsp;&nbsp; $148<br>| &nbsp;&nbsp; $258<br>| &nbsp;&nbsp; $579<br>|
| Class C  | $108<br>| &nbsp;&nbsp; $337<br>| &nbsp;&nbsp; $585<br>| &nbsp;&nbsp; $1139<br>|
| Class CX  | $123<br>| &nbsp;&nbsp; $384<br>| &nbsp;&nbsp; $665<br>| &nbsp;&nbsp; $1271<br>|
| Class R  | $73<br>| &nbsp;&nbsp; $227<br>| &nbsp;&nbsp; $395<br>| &nbsp;&nbsp; $883<br>|
| Class Y  | $32<br>| &nbsp;&nbsp; $100<br>| &nbsp;&nbsp; $174<br>| &nbsp;&nbsp; $393<br>|
| Investor Class  | $32<br>| &nbsp;&nbsp; $100<br>| &nbsp;&nbsp; $174<br>| &nbsp;&nbsp; $393<br>|
| Class R6  | $25<br>| &nbsp;&nbsp; $77<br>| &nbsp;&nbsp; $135<br>| &nbsp;&nbsp; $306<br>|

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**Principal Investment Strategies of the Fund**

The Fund invests at least 99.5% of its total assets in cash, government securities, and repurchase agreements collateralized by cash or government securities. In addition, at least 80% of the Fund's net assets (plus any borrowings for investment purposes) will be invested, under normal circumstances, in government securities and/or repurchase agreements that are collateralized by government securities. In contrast to the Fund's 99.5% investment policy, the Fund's 80% investment policy does not include cash or repurchase agreements collateralized by cash. For purposes of the foregoing investment policies, a government security generally means any security issued or guaranteed as to principal or interest by the United States, or by a person controlled or supervised by and acting as an instrumentality of the government of the United States.

The Fund is a Government Money Market Fund, as defined by Rule 2a-7 under the Investment Company Act of 1940, as amended (Rule 2a-7), that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 calendar days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 calendar days, and a dollar-weighted average life to maturity of portfolio securities of not more than 120 calendar days (determined without reference to exceptions regarding interest rate adjustments). The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase. Eligible Securities are (i) government securities, (ii) shares of other money market funds, and (iii) securities determined to present minimal credit risks by Invesco Advisers, Inc. (Invesco or the Adviser) pursuant to guidelines approved by the Fund's Board of Trustees (the Board).

In selecting securities for the Fund's portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield.

The portfolio managers normally hold portfolio securities to maturity, but may sell a particular security when they deem it advisable, such as when market or credit factors materially change.

**Principal Risks of Investing in the Fund**

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

***Money Market Fund Risk****.* You could lose money investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The share price of money market funds can fall below the $1.00 share price. The Fund's sponsor is not required to reimburse the Fund for losses, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund's

$1.00 share price at any time, including during periods of market stress. The credit quality of the Fund's holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund's share price. The Fund's share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

***Debt Securities Risk****.* The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund's distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer's financial strength, the market's perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The credit analysis applied to the Fund's debt securities may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

***Changing Fixed Income Market Conditions Risk****.* Increases in the federal funds and equivalent foreign rates or other changes to monetary policy or regulatory actions may expose fixed income markets to heightened volatility, perhaps suddenly and to a significant degree, and to reduced liquidity for certain fixed income investments, particularly those with longer maturities. Such changes and resulting increased volatility may adversely impact the Fund, including its operations, universe of potential investment options, and return potential. It is difficult to predict the impact of interest rate changes on various markets. In addition, decreases in fixed income dealer market-making capacity may also potentially lead to heightened volatility and reduced liquidity in the fixed income markets. As a result, the value of the Fund's investments may decline. Changes in central bank policies and other governmental actions and political events within the U.S. and abroad may also, among other things, affect investor and consumer expectations and confidence in the financial markets, which could result in higher than normal redemptions by shareholders, which could potentially increase the Fund's transaction costs.

***U.S. Government Obligations Risk****.* U.S. government securities include securities that are issued or guaranteed by the U.S. Treasury, by various agencies of the U.S. government, or by various instrumentalities which have been established or sponsored by the U.S. government. U.S. Treasury securities are backed by the "full faith and credit" of the United States, which may be negatively affected by an actual or threatened failure of the U.S. government to pay its obligations. Securities issued or guaranteed by federal agencies and U.S. government-sponsored instrumentalities may or may not be backed by the full faith and credit of the United States. In the case of those U.S. government securities not backed by the full faith and credit of the United States, the investor must look principally to the agency or instrumentality issuing or guaranteeing the security for ultimate repayment, and may not be able to assert a claim against the United States itself in the event that the agency or instrumentality does not meet its commitment. The U.S. government, its agencies and instrumentalities do not guarantee the market value of their securities, and consequently, the value of such securities may fluctuate.

***Market Risk***. The market values of the Fund's investments, and therefore the value of the Fund's shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund's investments may go up or down due to general market conditions that are not specifically related to the particular issuer. These

**2 Invesco Government Money Market Fund**

**invesco.com/us**GMKT-SUMPRO-1

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market conditions may include real or perceived adverse economic conditions, changes in trade regulation or economic sanctions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability and uncertainty, natural or environmental disasters, widespread disease or other public health issues, war, military conflict, acts of terrorism, economic crisis or adverse investor sentiment generally, among others. Certain changes in the U.S. economy in particular, such as when the U.S. economy weakens or when its financial markets decline, may have a material adverse effect on global financial markets as a whole, and on the securities to which the Fund has exposure. Increasingly strained relations between the U.S. and foreign countries, including as a result of economic sanctions and tariffs, may also adversely affect U.S. issuers, as well as non-U.S. issuers.

During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

***Repurchase Agreements Risk****.* If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

***Yield Risk***. The Fund's yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low or negative, the Fund may not be able to maintain a positive yield or pay Fund expenses out of current income without impairing the Fund's ability to maintain a stable net asset value. Additionally, inflation may outpace and diminish investment returns over time. Recent and potential future changes in monetary policy made by central banks and/or their governments may affect interest rates.

***Floating and Variable Rate Obligations Risk***. Some fixed-income securities have variable or floating interest rates that provide for a periodic adjustment in the interest rate paid on the securities. The rate adjustment intervals may be regular and range from daily up to annually, or may be based on an event, such as a change in the stated prevailing market rate. Floating and variable rate securities may be subject to greater liquidity risk than other debt securities, meaning that there may be limitations on the Fund's ability to sell the securities at any given time. Such securities also may lose value.

***Management Risk****.* The Fund is actively managed and depends heavily on the Adviser's judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund's portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser's investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

**Performance Information**

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance.

Effective June 28, 2016, the Fund changed its investment strategy from a prime money market strategy to a strategy that classified the Fund as a "government money market fund," as defined by Rule 2a-7, and simultaneously changed its name to Invesco Government Money Market Fund. Performance shown prior to that date reflects the Fund's former prime money market strategy, which permitted investments in certain types of securities that as a government money market fund, the Fund is no longer permitted to hold. Consequently, the performance information below would have been different if the current investment limitations had been in effect during the period prior to the Fund's conversion to a government money market fund.

Fund performance reflects any applicable fee waivers and expense reimbursements. Performance returns would be lower without applicable fee waivers and expense reimbursements. All Fund performance shown assumes the reinvestment of dividends and capital gains and the effect of the Fund's expenses.

Updated performance information is available on the Fund's website at www.invesco.com/us.

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**Annual Total Returns**

![](g369947mkt.jpg)

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| | | |
|:---|:---|:---|
| **Cash Reserve** | **Period Ended** | **Returns** |
| Year-to-date | March 31, 2026 | 0.81% |
| Best Quarter | December 31, 2023 | 1.25% |
| Worst Quarter | March 31, 2022 | 0.00% |

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**Average Annual Total Returns** (for the periods ended December 31, 2025)

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Inception**<br> **Date**<br>| **1**<br> **Year**<br>| **5**<br> **Years**<br>| **10**<br> **Years**<br>|
| Invesco Cash Reserve |  |  |  |  |
| Return Before Taxes | 10/16/1993 | 3.93<br> %<br>| 2.95<br> %<br>| 1.83<br> %<br>|
| Return After Taxes on Distributions |  | 2.31 | 1.74 | 1.08 |
| &nbsp;&nbsp; Return After Taxes on Distributions and Sale of Fund <br> Shares<br>|  | 2.31 | 1.74 | 1.08 |
| Class A | 5/15/2020 | 3.88 | 2.92 <br><sup>1</sup><br>| 1.79 <br><sup>1</sup><br>|
| Class AX | 6/7/2010 | 3.93 | 2.95 | 1.83 |
| Class C | 8/4/1997 | 2.31 | 2.51 | 1.57 |
| Class CX | 6/7/2010 | 2.16 | 2.40 | 1.54 |
| Class R | 6/3/2002 | 3.67 | 2.77 | 1.67 |
| Class Y | 10/3/2008 | 4.09 | 3.07 | 1.94 |
| Investor Class | 9/30/2003 | 4.09 | 3.07 | 1.94 |
| Class R6 | 4/4/2017 | 4.16 | 3.13 | 2.00 <br><sup>2</sup><br>|

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Performance shown prior to Class A shares' inception date is that of the Fund's Invesco Cash Reserve shares at net asset value restated to reflect the higher 12b-1 fees applicable to that class. Although invested in the same portfolio of securities, Class A shares' returns of the Fund will be different from Invesco Cash Reserve shares' returns of the Fund as they have different expenses.

Performance shown prior to the inception date is that of the Fund's Invesco Cash Reserve shares at net asset value and includes the 12b-1 fees applicable to that class. Although invested in the same portfolio of securities, Class R6 shares' returns of the Fund will be different from Invesco Cash Reserve shares' returns of the Fund as they have different expenses.

Invesco Cash Reserve shares' seven day yield on December 31, 2025, was 3.36%. For the current seven day yield, call (800) 959-4246.

**Management of the Fund**

Investment Adviser: Invesco Advisers, Inc. (Invesco or the Adviser)

**Purchase and Sale of Fund Shares**

You may purchase, redeem or exchange shares of the Fund on any business day through your financial adviser or by telephone at 800-959-4246. Shares of the Fund, other than Class R6 shares, may also be purchased, redeemed or exchanged on any business day through our website at www.invesco.com/us or by mail to Invesco Investment Services, Inc., P.O. Box 219078, Kansas City, MO 64121-9078.

Investor Class shares of the Fund are offered only to grandfathered investors. Class A, AX and CX shares of the Fund are closed to new investors. The minimum investments for Class A, C, R, Y, Investor Class and

**3 Invesco Government Money Market Fund**

**invesco.com/us**GMKT-SUMPRO-1

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Invesco Cash Reserve shares and additional investments for Class AX and CX shares for fund accounts are as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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| | | |
|:---|:---|:---|
| **Type of Account** | **Initial** <br> **Investment** <br> **Per Fund**<br>| **Additional**<br> **Investments** <br> **Per Fund**<br>|
| Asset or fee-based accounts managed by your financial adviser |  |  |
| Employer Sponsored Retirement and Benefit Plans and <br> Employer Sponsored IRAs<br>|  |  |
| IRAs and Coverdell ESAs if the new investor is purchasing <br> shares through a systematic purchase plan<br>| $25 | &nbsp;&nbsp; $25 |
| All other types of accounts if the investor is purchasing shares <br> through a systematic purchase plan<br>| 50 | &nbsp;&nbsp; 50 |
| IRAs and Coverdell ESAs | 250 | &nbsp;&nbsp; 25 |
| All other accounts | 1000 | &nbsp;&nbsp; 50 |

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With respect to Class R6 shares, there is no minimum initial investment for Employer Sponsored Retirement and Benefit Plans investing through a retirement platform that administers at least $2.5 billion in retirement plan assets. All other Employer Sponsored Retirement and Benefit Plans must meet a minimum initial investment of at least $1 million in each Fund in which it invests.

For all other institutional investors purchasing Class R6 shares, the minimum initial investment is $1 million, unless such investment is made by (i) an investment company, as defined under the Investment Company Act of 1940, as amended (1940 Act), that is part of a family of investment companies which own in the aggregate at least $100 million in securities, or (ii) an account established with a 529 college savings plan managed by Invesco, in which case there is no minimum initial investment.

There are no minimum investment amounts for Class R6 shares held through retail omnibus accounts maintained by an intermediary, such as a broker, that (i) generally charges an asset-based fee or commission in addition to those described in this prospectus, and (ii) maintains Class R6 shares and makes them available to retail investors.

**Tax Information** 

The Fund's distributions primarily are taxable to you as ordinary income, unless you are investing through a tax-advantaged arrangement, such as a 401(k) plan, 529 college savings plan or individual retirement account. Any distributions from a 401(k) plan or individual retirement account may be taxed as ordinary income when withdrawn from such plan or account.

**Payments to Broker-Dealers and Other Financial Intermediaries**

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund, the Fund's distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary's website for more information.

**4 Invesco Government Money Market Fund**

**invesco.com/us**GMKT-SUMPRO-1

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