# EDGAR Filing Document

**Accession Number:** 0000844779
**File Stem:** 0001193125-25-144663
**Filing Date:** 2025-6
**Character Count:** 3854
**Document Hash:** 39849f393b9ce48609cc8bb5d10b6e54
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-144663.hdr.sgml**: 20250623

**ACCESSION NUMBER**: 0001193125-25-144663

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250623

**DATE AS OF CHANGE**: 20250623

**EFFECTIVENESS DATE**: 20250623

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BLACKROCK FUNDS
- **CENTRAL INDEX KEY:** 0000844779

**ORGANIZATION NAME:**
- **EIN:** 510318674
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-26305
- **FILM NUMBER:** 251065197

**BUSINESS ADDRESS:**
- **STREET 1:** 100 BELLEVUE PARKWAY
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19809
- **BUSINESS PHONE:** 800-441-7762

**MAIL ADDRESS:**
- **STREET 1:** 100 BELLEVUE PARKWAY
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19809

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COMPASS CAPITAL FUNDS\
- **DATE OF NAME CHANGE:** 19961114

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PNC FUND
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NCP FUNDS
- **DATE OF NAME CHANGE:** 19890511

## Series and Classes Contracts Data

### iShares Enhanced Roll Yield Index Fund (Series ID: S000087850)

---

|  |  |
|:---|:---|
| Class Name                             | Class ID   |
| iShares Enhanced Roll Yield Index Fund | C000253864 |

---

## Series and Classes Contracts Data

### iShares Enhanced Roll Yield Index Fund (Series ID: S000087850)

| Class ID   | Class Name                             | Ticker Symbol   |
|:---|:---|:---|
| C000253864 | iShares Enhanced Roll Yield Index Fund |  |

**BLACKROCK FUNDS<sup>SM</sup>** 

iShares Enhanced Roll Yield Index Fund

(the "Fund")

**Supplement dated June 23, 2025 to the Prospectus of the Fund, dated October 3, 2024,** 

**as supplemented to date** 

**Effective immediately, the following changes are made to the Fund's Prospectus:** 

**The section of the Prospectus entitled "Fund Overview — Key Facts About iShares Enhanced Roll Yield Index Fund — Portfolio Managers" is deleted in its entirety and replaced with the following:** 

***Portfolio Manager***

---

| | | |
|:---|:---|:---|
| **Portfolio Manager** | **Portfolio Manager of**<br> **the Fund Since** | **Title** |
| Orlando Montalvo | 2025 | Managing Director of BlackRock, Inc. |

---

**The section of the Prospectus entitled "Details About the Fund — How the Fund Invests — About the Portfolio Management Team of the Fund" is deleted in its entirety and replaced with the following:** 

---

| |
|:---|
| &nbsp;&nbsp;&nbsp;**ABOUT THE PORTFOLIO MANAGER OF THE FUND** |
| &nbsp;&nbsp;&nbsp;Orlando Montalvo is the portfolio manager and is primarily responsible for the day-to-day management of the Fund. Please see "Management of the Fund — Portfolio Manager Information" for additional information about the portfolio manager. |

---

**The section of the Prospectus entitled "Management of the Fund — Portfolio Manager Information" is deleted in its entirety and replaced with the following:** 

Information regarding the portfolio manager of the Fund is set forth below. Further information regarding the portfolio manager, including other accounts managed, compensation, ownership of Fund shares, and possible conflicts of interest, is available in the SAI.

---

| | | | |
|:---|:---|:---|:---|
| **Portfolio Manager** | **Primary Role** | **Since** | **Title and Recent Biography** |
| Orlando Montalvo | Primarily responsible for the day-to-day management of the Fund's portfolio, including setting the Fund's overall investment strategy and overseeing the management of the Fund. | 2025 | Managing Director of BlackRock, Inc. since 2016. |

---

**Shareholders should retain this Supplement for future reference.**