# EDGAR Filing Document

**Accession Number:** 0000080248
**File Stem:** 0001999371-25-007852
**Filing Date:** 2025-6
**Character Count:** 3364
**Document Hash:** b23874ba9e12bec15a0395a156e1c3fd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001999371-25-007852.hdr.sgml**: 20250617

**ACCESSION NUMBER**: 0001999371-25-007852

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250617

**DATE AS OF CHANGE**: 20250617

**EFFECTIVENESS DATE**: 20250617

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** T. Rowe Price New Horizons Fund, Inc.
- **CENTRAL INDEX KEY:** 0000080248

**ORGANIZATION NAME:**
- **EIN:** 520791372
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-18099
- **FILM NUMBER:** 251051849

**BUSINESS ADDRESS:**
- **STREET 1:** 1307 POINT STREET
- **CITY:** BALTIMORE
- **STATE:** MD
- **ZIP:** 21231
- **BUSINESS PHONE:** 410-345-2000

**MAIL ADDRESS:**
- **STREET 1:** 1307 POINT STREET
- **CITY:** BALTIMORE
- **STATE:** MD
- **ZIP:** 21231

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PRICE T ROWE NEW HORIZONS FUND INC
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### T. Rowe Price New Horizons Fund, Inc. (Series ID: S000002106)

---

|  |  |  |
|:---|:---|:---|
| Class Name                              | Ticker Symbol | Class ID   |
| T. Rowe Price New Horizons Fund, Inc.   | PRNHX         | C000005478 |
| T. Rowe Price New Horizons Fund-I Class | PRJIX         | C000159684 |
| T. Rowe Price New Horizon Fund-Z Class  | TRUZX         | C000219323 |

---

## Series and Classes Contracts Data

### T. Rowe Price New Horizons Fund, Inc. (Series ID: S000002106)

| Class ID   | Class Name                              | Ticker Symbol   |
|:---|:---|:---|
| C000005478 | T. Rowe Price New Horizons Fund, Inc.   | PRNHX           |
| C000159684 | T. Rowe Price New Horizons Fund-I Class | PRJIX           |
| C000219323 | T. Rowe Price New Horizon Fund-Z Class  | TRUZX           |

**T. Rowe Price New Horizons Fund**

Supplement to Prospectus and Summary Prospectus dated March 1, 2025

In the Summary Prospectus and Section 1 of the Prospectus, the portfolio manager table under "Management" is supplemented as follows:

Effective July 21, 2025, Shaun Michael Currie will join Joshua K. Spencer as the fund's co-portfolio manager and cochair of the fund's Investment Advisory Committee. Effective September 30, 2025, Mr. Spencer will step down from his role on the fund and, effective October 1, 2025, Mr. Currie will become the fund's sole portfolio manager and sole chair of the fund's Investment Advisory Committee. Mr. Currie joined T. Rowe Price in 2016.

In Section 2 of the Prospectus, the disclosure under "Portfolio Management" is supplemented as follows:

Effective July 21, 2025, Shaun Michael Currie will join Joshua K. Spencer as the fund's co-portfolio manager and cochair of the fund's Investment Advisory Committee. Effective September 30, 2025, Mr. Spencer will step down from his role on the fund and, effective October 1, 2025, Mr. Currie will become the fund's sole portfolio manager and sole chair of the fund's Investment Advisory Committee. Mr. Currie joined the Firm in 2016, and his investment experience dates from 2010. During the past five years, he has served as an equity research analyst and, beginning in 2023, as a portfolio manager and associate portfolio manager.

The date of this supplement is June 17, 2025.

F42-041 6/17/25