24F-2NT:Annual Filing Information

Form 24F-2 Annual Filing

Filers submitting a 24F-2 where the total fee due is based upon the aggregate net sales of all series and classes with the same fiscal year should only complete one copy of the form. To begin the form select "Add 24F-2 Form".

Filers calculating fees on a class-by-class or series-by-series basis must complete a separate Form 24F-2 for each class or series. The application will allow you to create a separate form for each series or class within a single submission. Simply select "Add 24F-2 Form" to begin each additional form.

Read instructions at end of Form before preparing Form. See "INSTRUCTIONS" link above.

Annual Filing Information Record:1

1. Name and address of issuer:

Name of Issuer

WILLIAM BLAIR FUNDS

Street 1

150 North Riverside Plaza

Street 2

City

Chicago

State

ILLINOIS

Country

UNITED STATES

Zip code and zip code extension or foreign postal code

60606

2. The name and EDGAR identifier of each series or class of securities for which this Form is filed (if the Form is being filed for all series and classes of securities of the issuer, check the box but do not list series or classes):

Series ID Record:1

Series Name

WILLIAM BLAIR EMERGING MARKETS LEADERS FUND

Series ID

S000021052

Class ID Record:1

Class Name

Class I

Class ID

C000059867

Class ID Record:2

Class Name

Class R6

Class ID

C000059868

Class ID Record:3

Class Name

Class N

Class ID

C000088850

Series ID Record:2

Series Name

WILLIAM BLAIR EMERGING MARKETS SMALL CAP GROWTH FUND

Series ID

S000034349

Class ID Record:1

Class Name

Class I

Class ID

C000105753

Class ID Record:2

Class Name

Class N

Class ID

C000105754

Class ID Record:3

Class Name

Class R6

Class ID

C000105755

Series ID Record:3

Series Name

WILLIAM BLAIR INTERNATIONAL LEADERS FUND

Series ID

S000037763

Class ID Record:1

Class Name

Class N

Class ID

C000116468

Class ID Record:2

Class Name

Class I

Class ID

C000116469

Class ID Record:3

Class Name

Class R6

Class ID

C000116470

Series ID Record:4

Series Name

WILLIAM BLAIR GROWTH FUND

Series ID

S000008594

Class ID Record:1

Class Name

Class N

Class ID

C000023523

Class ID Record:2

Class Name

Class I

Class ID

C000023524

Class ID Record:3

Class Name

Class R6

Class ID

C000211716

Series ID Record:5

Series Name

WILLIAM BLAIR INTERNATIONAL SMALL CAP GROWTH FUND

Series ID

S000008595

Class ID Record:1

Class Name

Class N

Class ID

C000023525

Class ID Record:2

Class Name

Class I

Class ID

C000023526

Class ID Record:3

Class Name

Class R6

Class ID

C000023527

Series ID Record:6

Series Name

WILLIAM BLAIR EMERGING MARKETS GROWTH FUND

Series ID

S000008596

Class ID Record:1

Class Name

Class N

Class ID

C000023528

Class ID Record:2

Class Name

Class I

Class ID

C000023529

Class ID Record:3

Class Name

Class R6

Class ID

C000023530

Series ID Record:7

Series Name

WILLIAM BLAIR SMALL CAP VALUE FUND

Series ID

S000008597

Class ID Record:1

Class Name

Class N

Class ID

C000023531

Class ID Record:2

Class Name

Class I

Class ID

C000023532

Class ID Record:3

Class Name

Class R6

Class ID

C000211717

Series ID Record:8

Series Name

WILLIAM BLAIR LARGE CAP GROWTH FUND

Series ID

S000008601

Class ID Record:1

Class Name

Class N

Class ID

C000023538

Class ID Record:2

Class Name

Class I

Class ID

C000023539

Class ID Record:3

Class Name

Class R6

Class ID

C000211719

Series ID Record:9

Series Name

WILLIAM BLAIR SMALL CAP GROWTH FUND

Series ID

S000008602

Class ID Record:1

Class Name

Class N

Class ID

C000023540

Class ID Record:2

Class Name

Class I

Class ID

C000023541

Class ID Record:3

Class Name

Class R6

Class ID

C000211720

Series ID Record:10

Series Name

WILLIAM BLAIR SMALL-MID CAP GROWTH FUND

Series ID

S000008603

Class ID Record:1

Class Name

Class N

Class ID

C000023542

Class ID Record:2

Class Name

Class I

Class ID

C000023543

Class ID Record:3

Class Name

Class R6

Class ID

C000211721

Series ID Record:11

Series Name

WILLIAM BLAIR INTERNATIONAL GROWTH FUND

Series ID

S000008604

Class ID Record:1

Class Name

Class N

Class ID

C000023544

Class ID Record:2

Class Name

Class I

Class ID

C000023545

Class ID Record:3

Class Name

Class R6

Class ID

C000211722

Series ID Record:12

Series Name

WILLIAM BLAIR INSTITUTIONAL INTERNATIONAL GROWTH FUND

Series ID

S000008605

Class ID Record:1

Class Name

Institutional Class

Class ID

C000023546

Series ID Record:13

Series Name

WILLIAM BLAIR MID CAP GROWTH FUND

Series ID

S000010050

Class ID Record:1

Class Name

Class N

Class ID

C000027836

Class ID Record:2

Class Name

Class I

Class ID

C000027837

Class ID Record:3

Class Name

Class R6

Class ID

C000211724

Series ID Record:14

Series Name

WILLIAM BLAIR GLOBAL LEADERS FUND

Series ID

S000019315

Class ID Record:1

Class Name

Class N

Class ID

C000053607

Class ID Record:2

Class Name

Class I

Class ID

C000053608

Class ID Record:3

Class Name

Class R6

Class ID

C000053609

Series ID Record:15

Series Name

WILLIAM BLAIR SMALL-MID CAP CORE FUND

Series ID

S000066499

Class ID Record:1

Class Name

Class I

Class ID

C000214491

Class ID Record:2

Class Name

Class R6

Class ID

C000214492

Series ID Record:16

Series Name

WILLIAM BLAIR EMERGING MARKETS DEBT FUND

Series ID

S000069167

Class ID Record:1

Class Name

Class R6

Class ID

C000221008

Class ID Record:2

Class Name

Class I

Class ID

C000221009

Series ID Record:17

Series Name

WILLIAM BLAIR CHINA GROWTH FUND

Series ID

S000072753

Class ID Record:1

Class Name

Class I

Class ID

C000229252

Class ID Record:2

Class Name

Class R6

Class ID

C000229253

Series ID Record:18

Series Name

WILLIAM BLAIR EMERGING MARKETS EX CHINA GROWTH FUND

Series ID

S000075390

Class ID Record:1

Class Name

Class I

Class ID

C000234384

Class ID Record:2

Class Name

Class R6

Class ID

C000234385

Series ID Record:19

Series Name

WILLIAM BLAIR MID CAP VALUE FUND

Series ID

S000075391

Class ID Record:1

Class Name

Class I

Class ID

C000234386

Class ID Record:2

Class Name

Class R6

Class ID

C000234387

Series ID Record:20

Series Name

WILLIAM BLAIR SMALL-MID CAP VALUE FUND

Series ID

S000080810

Class ID Record:1

Class Name

Class I

Class ID

C000243363

Class ID Record:2

Class Name

Class R6

Class ID

C000243364

3. Investment Company Act File Number:

811-05344

Securities Act File Number Record:1

Securities Act File Number:

033-17463

4(a). Last day of fiscal year for which this Form is filed:

12/31/2023

4(b). Check box if this Form is being filed late (i.e., more than 90 calendar days after the end of the issuer’s fiscal year). (See Instruction A.2)
Note: If the Form is being filed late, interest must be paid on the registration fee due.

4(c). Check box if this is the last time the issuer will be filing this Form.

5. Calculation of registration fee (if calculating on a class-by-class or series-by- series basis, provide the EDGAR identifier for each such class or series):

Series or Class (Contract) ID

(i) Aggregate sale price of securities sold during the fiscal year pursuant to section 24(f):

2386462751.00

(ii) Aggregate price of securities redeemed or repurchased during the fiscal year:

2689470990.00

(iii) Aggregate price of securities redeemed or repurchased during any prior fiscal year ending no earlier than October 11, 1995 that were not previously used to reduce registration fees payable to the Commission:

6595476526.00

(iv) Total available redemption credits [add Items 5(ii) and 5(iii)]:

9284947516.00

(v) Net sales -- if Item 5(i) is greater than Item 5(iv) [subtract Item 5(iv) from Item 5(i)]:

0.00

(vi) Redemption credits available for use in future years -- if Item 5(i) is less than Item 5(iv) [subtract Item 5(iv) from Item 5(i)]:

(6898484765.00)

(vii) Multiplier for determining registration fee (See Instruction C.9):

0.0001476

(viii) Registration fee due [multiply Item 5(v) by Item 5(vii)] (enter "0" if no fee is due):

0.00

6. Prepaid Shares

If the response to Item 5(i) was determined by deducting an amount of securities that were registered under the Securities Act of 1933 pursuant to rule 24e-2 as in effect before October 11, 1997, then report the amount of securities (number of shares or other units) deducted here:

If there is a number of shares or other units that were registered pursuant to rule 24e-2 remaining unsold at the end of the fiscal year for which this form is filed that are available for use by the issuer in future fiscal years, then state that number here:

7. Interest due -- if this Form is being filed more than 90 days after the end of the issuer’s fiscal year (see Instruction D):

8. Total of the amount of the registration fee due plus any interest due [Item 5(viii) plus Item 7]:

0.00

9. Explanatory Notes (if any):

Signatures

This report has been signed below by the following persons on behalf of the issuer and in the capacities and on the dates indicated. By (Signature and Title)*

Name and Title

John M. Raczek, Principal Financial Officer

Date

03/12/2024

Signature

John M. Raczek

24F-2NT: Filer Information

Submission Contact Information

Notification Information

Payor Information

24F-2NT:Series/Class (Contract) Information

24F-2NT:Annual Filing Information

Form 24F-2 Annual Filing

1. Name and address of issuer:

2. The name and EDGAR identifier of each series or class of securities for which this Form is filed (if the Form is being filed for all series and classes of securities of the issuer, check the box but do not list series or classes):

5. Calculation of registration fee (if calculating on a class-by-class or series-by- series basis, provide the EDGAR identifier for each such class or series):

6. Prepaid Shares

Signatures