# EDGAR Filing Document

**Accession Number:** 0000822632
**File Stem:** 0001193125-26-012335
**Filing Date:** 2026-1
**Character Count:** 2130
**Document Hash:** 7370493f9b19471452724326eb02dddd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-012335.hdr.sgml**: 20260114

**ACCESSION NUMBER**: 0001193125-26-012335

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260114

**DATE AS OF CHANGE**: 20260114

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** WILLIAM BLAIR FUNDS
- **CENTRAL INDEX KEY:** 0000822632

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 811-05344
- **FILM NUMBER:** 26531685

**BUSINESS ADDRESS:**
- **STREET 1:** 150 NORTH RIVERSIDE PLAZA
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** 3123648000

**MAIL ADDRESS:**
- **STREET 1:** 150 NORTH RIVERSIDE PLAZA
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WILLIAM BLAIR MUTUAL FUNDS INC
- **DATE OF NAME CHANGE:** 19960112

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BLAIR WILLIAM READY RESERVES INC
- **DATE OF NAME CHANGE:** 19920316

## Series and Classes Contracts Data

### William Blair Global Leaders Fund (Series ID: S000019315)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000053607 | Class N      | WGGNX           |
| C000053608 | Class I      | WGFIX           |
| C000053609 | Class R6     | BGGIX           |

**WILLIAM BLAIR FUNDS** 

WILLIAM BLAIR GLOBAL LEADERS FUND

**URGENT: YOUR RESPONSE IS CRITICAL** 

Dear Shareholder:

An important and time-sensitive matter pertaining to your investment in William Blair Global Leaders Fund requires your input. Our efforts to reach you by mail, email, and phone have been unsuccessful so far.

To secure your input, Broadridge Financial Solutions has been engaged by William Blair. Please call Broadridge right away. You can call them toll-free at **1-866-705-9913** on any weekday between 9:00 a.m. to 10:00 p.m. Eastern Time.

It will take only a minute of your time to resolve this matter.

Thank you for attending to this request. We truly appreciate your investment.

Sincerely,

**William Blair Funds** 

WB2026