# EDGAR Filing Document

**Accession Number:** 0001038520
**File Stem:** 0000030146-26-000155
**Filing Date:** 2026-3
**Character Count:** 3176
**Document Hash:** b3ce2ee45fb52fce9a4879e5a06abdd2
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000030146-26-000155.hdr.sgml**: 20260331

**ACCESSION NUMBER**: 0000030146-26-000155

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260331

**DATE AS OF CHANGE**: 20260331

**EFFECTIVENESS DATE**: 20260331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUNDS
- **CENTRAL INDEX KEY:** 0001038520

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-26513
- **FILM NUMBER:** 26821365

**BUSINESS ADDRESS:**
- **STREET 1:** C/O BNY MELLON INVESTMENT ADVISER, INC.
- **STREET 2:** 240 GREENWICH STREET
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10286
- **BUSINESS PHONE:** 2129226400

**MAIL ADDRESS:**
- **STREET 1:** C/O BNY MELLON INVESTMENT ADVISER, INC.
- **STREET 2:** 240 GREENWICH STREET
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10286

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND
- **DATE OF NAME CHANGE:** 19970501

## Series and Classes Contracts Data

### Dreyfus Institutional Preferred Government Plus Money Market Fund (Series ID: S000002772)

---

|  |  |
|:---|:---|
| Class Name                                                                             | Class ID   |
| Dreyfus Institutional Preferred Government Plus Money Market Fund-Institutional Shares | C000007598 |

---

## Series and Classes Contracts Data

### Dreyfus Institutional Preferred Government Plus Money Market Fund (Series ID: S000002772)

| Class ID   | Class Name                                                                             | Ticker Symbol   |
|:---|:---|:---|
| C000007598 | Dreyfus Institutional Preferred Government Plus Money Market Fund-Institutional Shares |  |

March 31, 2026

#### DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUNDS <br> Dreyfus Institutional Preferred Government Plus Money Market Fund
*Supplement to Current Summary Prospectus and Prospectus*

**The following information supersedes and replaces the information in the first sentence in the section "Purchase and Sale of Fund Shares" in the summary prospectus and the first sentence at the bottom of "Contents", the first sentence in the section "Fund Summary -- Purchase and Sale of Fund Shares" and first sentence in the first paragraph in the section "Fund Details -- Shareholder Guide – Buying and Selling Shares" in the prospectus:**

The fund's Institutional shares are designed for funds in the BNY Mellon Family of Funds and BNY Mellon Funds Trust for the investment of their excess cash and for the investment of their cash collateral in connection with portfolio securities lending. The fund's Institutional shares also may be purchased on behalf of clients of separately managed account programs or other similar programs (each, a "Program") where BNY Mellon Investment Adviser, Inc., Dreyfus or their affiliates has an agreement directly with the client to provide advisory and administrative and other similar services to the Program for compensation.

0286STK0326

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