# EDGAR Filing Document

**Accession Number:** 0001135300
**File Stem:** 0000894189-26-007626
**Filing Date:** 2026-3
**Character Count:** 3085
**Document Hash:** e18b8789eb189dea3582f32bd3d04837
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000894189-26-007626.hdr.sgml**: 20260309

**ACCESSION NUMBER**: 0000894189-26-007626

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260309

**DATE AS OF CHANGE**: 20260309

**EFFECTIVENESS DATE**: 20260309

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BUFFALO FUNDS
- **CENTRAL INDEX KEY:** 0001135300

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-56018
- **FILM NUMBER:** 26733689

**BUSINESS ADDRESS:**
- **STREET 1:** KORNITZER CAPITAL MANAGEMENT, INC.
- **STREET 2:** 5420 WEST 61ST PLACE
- **CITY:** SHAWNEE MISSION
- **STATE:** KS
- **ZIP:** 66205
- **BUSINESS PHONE:** 9136777778

**MAIL ADDRESS:**
- **STREET 1:** KORNITZER CAPITAL MANAGEMENT, INC.
- **STREET 2:** 5420 WEST 61ST PLACE
- **CITY:** SHAWNEE MISSION
- **STATE:** KS
- **ZIP:** 66205

## Series and Classes Contracts Data

### Buffalo Mid Cap Discovery Fund (Series ID: S000006557)

---

|  |  |  |
|:---|:---|:---|
| Class Name          | Ticker Symbol | Class ID   |
| Investor Class      | BUFTX         | C000017896 |
| Institutional Class | BUITX         | C000214589 |

---

### Buffalo Growth Fund (Series ID: S000022454)

---

|  |  |  |
|:---|:---|:---|
| Class Name          | Ticker Symbol | Class ID   |
| Investor Class      | BUFGX         | C000064615 |
| Institutional Class | BIIGX         | C000214595 |

---

## Series and Classes Contracts Data

### Buffalo Mid Cap Discovery Fund (Series ID: S000006557)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000017896 | Investor Class      | BUFTX           |
| C000214589 | Institutional Class | BUITX           |

### Buffalo Growth Fund (Series ID: S000022454)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000064615 | Investor Class      | BUFGX           |
| C000214595 | Institutional Class | BIIGX           |

Filed pursuant to Rule 497(e)

Registration Nos. 333-56018; 811-10303

**Supplement dated March 9, 2026**

**to the**

**Buffalo Funds**<sup>®</sup>

**Prospectus and Statement of Additional Information ("SAI"), each**

**dated July 29, 2025, as previously supplemented**

**Buffalo Growth Fund**

**Buffalo Mid Cap Discovery Fund**

***This supplement amends the Prospectus and SAI of the Buffalo Funds, each dated July 29, 2025, as previously supplemented.***

Effective March 9, 2026, Mr. Doug Cartwright will no longer serve as a co-portfolio manager of the Buffalo Growth Fund (the "Growth Fund") or the Buffalo Mid Cap Discovery Fund (the "Mid Cap Discovery Fund").

Mr. Josh West will continue to serve as a portfolio manager of the Growth Fund and Mr. Dave Carlsen will continue to serve as a portfolio manager of the Mid Cap Discovery Fund.

Accordingly, all references to Mr. Cartwright with respect to the Growth Fund and Mid Cap Discovery Fund are removed.

**Please retain this Supplement for reference.**