# EDGAR Filing Document

**Accession Number:** 0001016073
**File Stem:** 0001398344-26-008083
**Filing Date:** 2026-5
**Character Count:** 4392
**Document Hash:** 07f5897eb5b3655af7bc4830e7f3f74f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001398344-26-008083.hdr.sgml**: 20260501

**ACCESSION NUMBER**: 0001398344-26-008083

**CONFORMED SUBMISSION TYPE**: 497J

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260501

**DATE AS OF CHANGE**: 20260501

**EFFECTIVENESS DATE**: 20260501

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DRIEHAUS MUTUAL FUNDS
- **CENTRAL INDEX KEY:** 0001016073

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497J
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-05265
- **FILM NUMBER:** 26931164

**BUSINESS ADDRESS:**
- **STREET 1:** 25 EAST ERIE ST
- **STREET 2:** 25 EAST ERIE STREET
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60611
- **BUSINESS PHONE:** 3125873800

**MAIL ADDRESS:**
- **STREET 1:** 25 E. ERIE STREET
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60611

## Series and Classes Contracts Data

### DRIEHAUS EMERGING MARKETS GROWTH FUND (Series ID: S000001909)

| Class ID   | Class Name                | Ticker Symbol   |
|:---|:---|:---|
| C000005025 | Investor Share Class      | DREGX           |
| C000190956 | Institutional Share Class | DIEMX           |

### Driehaus International Small Cap Growth Fund (Series ID: S000018408)

| Class ID   | Class Name                                   | Ticker Symbol   |
|:---|:---|:---|
| C000050883 | Driehaus International Small Cap Growth Fund | DRIOX           |

### Driehaus Emerging Markets Small Cap Growth Fund (Series ID: S000032990)

| Class ID   | Class Name                                      | Ticker Symbol   |
|:---|:---|:---|
| C000101771 | Driehaus Emerging Markets Small Cap Growth Fund | DRESX           |

### Driehaus Micro Cap Growth Fund (Series ID: S000042829)

| Class ID   | Class Name                     | Ticker Symbol   |
|:---|:---|:---|
| C000132648 | Driehaus Micro Cap Growth Fund | DMCRX           |

### Driehaus Global Fund (Series ID: S000056073)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000176647 | Driehaus Global Fund | DMAGX           |

### Driehaus Small Cap Growth Fund (Series ID: S000058261)

| Class ID   | Class Name                | Ticker Symbol   |
|:---|:---|:---|
| C000190998 | Investor Share Class      | DVSMX           |
| C000190999 | Institutional Share Class | DNSMX           |

### Driehaus Small/Mid Cap Growth Fund (Series ID: S000068519)

| Class ID   | Class Name                         | Ticker Symbol   |
|:---|:---|:---|
| C000219126 | Driehaus Small/Mid Cap Growth Fund | DSMDX           |

### Driehaus International Developed Equity Fund (Series ID: S000084840)

| Class ID   | Class Name                                   | Ticker Symbol   |
|:---|:---|:---|
| C000249377 | Driehaus International Developed Equity Fund | DIDEX           |

---

| | | |
|:---|:---|:---|
| Vedder Price<br> 222 North LaSalle Street<br> Chicago, Illinois 60601 | T: +1 312 609 7500<br> F: +1 312 609 5005<br> vedder.com | ![](image_001.jpg) |

---

**Renee M. Hardt**

Shareholder

+1 312 609 7616

rhardt@vedderprice.com

May 1, 2026

**<u>VIA EDGAR</u>**

Securities and Exchange Commission<br> 100 F. Street, NE<br> Washington, D.C. 20546

Re: Driehaus Mutual Funds ("Registrant")<br> <u>Registration Nos. 333-05265 and 811-07655</u>

To the Commission:

Pursuant to Rule 497(j) of Regulation C, under the Securities Act of 1933, in lieu of filing under paragraph (b) or (c) of Rule 497, on behalf of the Registrant, we hereby certify that (1) the forms of Prospectus and Statement of Additional Information, each dated April 30, 2026, as filed on April 29, 2026 for the above-captioned Registrant that would have been filed under paragraph (b) or (c) of Rule 497 do not differ from that contained in the most recent registration statement or amendment and (2) the text of the most recent registration statement or amendment has been filed electronically.

Very truly yours,

/s/ Renee M. Hardt

Renee M. Hardt

Vedder Price P.C. is affiliated with Vedder Price LLP, which operates in England and Wales, Vedder Price (CA), LLP, which operates in California, <br> Vedder Price Pte. Ltd., which operates in Singapore, and Vedder Price (FL) LLP, which operates in Florida.

Chicago \| Dallas \| London \| Los Angeles \| Miami \| New York \| San Francisco \| Singapore \| Washington, DC