UNITED STATES                                  
                       SECURITIES AND EXCHANGE COMMISSION                       
                             WASHINGTON, D.C. 20549                             

                                  SCHEDULE 13G                                  
                   Under the Securities Exchange Act of 1934                    
                              (Amendment No. 3) *                               

                        BARRETT BUSINESS SERVICES, INC.                         

                
(Name of Issuer)



                                  COMMON STOCK                                  

                              
(Title of Class of Securities)


                                   068463108                                    

              
(CUSIP Number)


                               DECEMBER 31, 2023                                

                                                       
(Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this 
Schedule is filed:
X    Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a reporting person's 
initial filing on this form with respect to the subject class of securities, 
and for any subsequent amendment containing information which would alter the 
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be 
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange 
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of 
the Act but shall be subject to all other provisions of the Act (however, see 
the Notes).




                               Page 1 of 9 Pages                                

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CUSIP No. 068463108
1.
Names of Reporting Persons
American Century Capital Portfolios, Inc.
2.
Check the Appropriate Box if a Member of a Group (See Instructions)
a)

b)

3.
SEC Use Only

4.
Citizenship or Place of Organization
Maryland

                                                                                                  
                                                                                                  
                                  5.                 Sole Voting Power                    145,000 
Number of Shares                                                                                  
Beneficially                      6.                 Shared Voting Power                    N/A   
Owned by                                                                                          
Each                                                                                              
Reporting                         7.                 Sole Dispositive Power               145,000 
Person With:                                                                                      
                                                                                                  
                                  8.                 Shared Dispositive Power               N/A   
                                                                                                  
9.                 Aggregate Amount Beneficially Owned by Each Reporting Person           145,000 
                                                                                                  
10.                Check if the Aggregate Amount in Row (9) Excludes Certain Shares               
                   (See Instructions)                                                             
                                                                                                  
                                                                                                  
11.                Percent of Class Represented by Amount in Row (9)                       2.19%  
                                                                                                  
12.                Type of Reporting Person (See Instructions)                              IV    




                               Page 2 of 9 Pages                                

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CUSIP No. 068463108
1.
Names of Reporting Persons
American Century Investment Management, Inc.
2.
Check the Appropriate Box if a Member of a Group (See Instructions)
a)

b)

3.
SEC Use Only

4.
Citizenship or Place of Organization
Delaware

                                                                                                  
                                                                                                  
                                  5.                 Sole Voting Power                    235,590 
Number of Shares                                                                                  
Beneficially                      6.                 Shared Voting Power                    N/A   
Owned by                                                                                          
Each                                                                                              
Reporting                         7.                 Sole Dispositive Power               243,258 
Person With:                                                                                      
                                                                                                  
                                  8.                 Shared Dispositive Power               N/A   
                                                                                                  
9.                 Aggregate Amount Beneficially Owned by Each Reporting Person           243,258 
                                                                                                  
10.                Check if the Aggregate Amount in Row (9) Excludes Certain Shares               
                   (See Instructions)                                                             
                                                                                                  
                                                                                                  
11.                Percent of Class Represented by Amount in Row (9)                       3.68%  
                                                                                                  
12.                Type of Reporting Person (See Instructions)                              IA    




                               Page 3 of 9 Pages                                

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CUSIP No. 068463108
1.
Names of Reporting Persons
American Century Companies, Inc.
2.
Check the Appropriate Box if a Member of a Group (See Instructions)
a)

b)

3.
SEC Use Only

4.
Citizenship or Place of Organization
Delaware

                                                                                                  
                                                                                          235,590 
                                  5.                 Sole Voting Power                            
Number of Shares                                                                                  
Beneficially                      6.                 Shared Voting Power                    N/A   
Owned by                                                                                          
Each                                                                                              
Reporting                         7.                 Sole Dispositive Power               243,258 
Person With:                                                                                      
                                                                                                  
                                  8.                 Shared Dispositive Power               N/A   
                                                                                                  
9.                 Aggregate Amount Beneficially Owned by Each Reporting Person           243,258 
                                                                                                  
10.                Check if the Aggregate Amount in Row (9) Excludes Certain Shares               
                   (See Instructions)                                                             
                                                                                                  
                                                                                                  
11.                Percent of Class Represented by Amount in Row (9)                       3.68%  
                                                                                                  
12.                Type of Reporting Person (See Instructions)                              HC    




                               Page 4 of 9 Pages                                

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CUSIP No. 068463108
1.
Names of Reporting Persons
Stowers Institute for Medical Research
2.
Check the Appropriate Box if a Member of a Group (See Instructions)
a)

b)

3.
SEC Use Only

4.
Citizenship or Place of Organization
Delaware

                                                                                                  
                                                                                          235,590 
                                  5.                 Sole Voting Power                            
Number of Shares                                                                                  
Beneficially                      6.                 Shared Voting Power                    N/A   
Owned by                                                                                          
Each                                                                                              
Reporting                         7.                 Sole Dispositive Power               243,258 
Person With:                                                                                      
                                                                                                  
                                  8.                 Shared Dispositive Power               N/A   
                                                                                                  
9.                 Aggregate Amount Beneficially Owned by Each Reporting Person           243,258 
                                                                                                  
10.                Check if the Aggregate Amount in Row (9) Excludes Certain Shares               
                   (See Instructions)                                                             
                                                                                                  
                                                                                                  
11.                Percent of Class Represented by Amount in Row (9)                       3.68%  
                                                                                                  
12.                Type of Reporting Person (See Instructions)                              HC    




                               Page 5 of 9 Pages                                

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Item 1.
a)
Name of Issuer

Barrett Business Services, Inc.

b)
Address of Issuer's Principal Executive Offices

8100 NE Parkway Drive, Suite 200
Vancouver, Washington 98662
Item 2.
a)
Name of Person Filing:
1)
American Century Capital Portfolios, Inc.
2)
American Century Investment Management, Inc.
3)
American Century Companies, Inc.
4)
Stowers Institute for Medical Research

a)
Address of Principal Business Office or, if none, Residence.
4500 Main Street
9
th
Floor
Kansas City, Missouri 64111

c)
Citizenship.
1)
Maryland
2)
Delaware
3)
Delaware
4)
Delaware

d)
Title of Class of Securities
Reference is made to the cover page of this filing.

e)
CUSIP Number.
Reference is made to the cover page of this filing.


                               Page 6 of 9 Pages                                

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Item 3.    If this statement is filed pursuant to (s)(s)240.13d-1(b) or 
240.13d-2(b) or (c), check whether the person filing is a:
1)
American Century Capital Portfolios, Inc. is an investment company registered 
under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
2)
American Century Investment Management, Inc. is an investment adviser in 
accordance with (s)240.13d-1(b)(1)(ii)(E).
3)
American Century Companies, Inc. is a parent holding company or control person 
in accordance with
(s)
240.13d-1(b)(1)(ii)(G).
4)
Stowers Institute for Medical Research is a parent holding company or control 
person in accordance with
(s)
240.13d-1(b)(1)(ii)(G).
Item 4.     Ownership.

Reference is made to Items 5-9 and 11 on the cover page of this filing.
Item 5. Ownership of Five Percent or Less of a Class.
If this statement is being filed to report the fact that as of the date hereof 
the reporting person has ceased to be the beneficial owner of more than five 
percent of the class of securities, check the following: [ X ]
Item 6. Ownership of More than Five Percent on Behalf of Another Person.
Various persons, including the investment companies and separate institutional 
investor accounts that American Century Investment Management, Inc. ("ACIM") 
serves as investment adviser, have the right to receive or the power to direct 
the receipt of dividends from, or the proceeds from the sale of, the 
securities that are the subject of this schedule.  Except as may be otherwise 
indicated if this is a joint filing, not more than 5% of the class of 
securities that is the subject of this schedule is owned by any one client 
advised by ACIM.
Item 7. Identification and Classification of the Subsidiary Which Acquired the 
Security Being Reported on By the Parent Holding Company or Control Person.
See attached Exhibit A.
Item 8. Identification and Classification of Members of the Group.
Not applicable.
Item 9. Notice of Dissolution of Group
Not applicable






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Item 10. Certification
By signing below I certify that, to the best of my knowledge and belief, the 
securities referred to above were acquired and are held in the ordinary course 
of business and were not acquired and are not held for the purpose of or with 
the effect of changing or influencing the control of the issuer of the 
securities and were not acquired and are not held in connection with or as a 
participant in any transaction having that purpose or effect.

                                   SIGNATURE                                    
After reasonable inquiry and to the best of my knowledge and belief, I certify 
that the information set forth in this statement is true, complete and correct.


Dated this 9th day of February, 2024.

AMERICAN CENTURY CAPITAL PORTFOLIOS, INC. ("ACCP")

AMERICAN CENTURY INVESTMENT MANAGEMENT, INC. ("ACIM")

AMERICAN CENTURY COMPANIES, INC. ("ACC")

By:
__
/s/ John Pak
__________________________
John Pak
Senior Vice President, ACCP, ACIM and ACC


STOWERS INSTITUTE FOR MEDICAL RESEARCH, solely in its capacity as control 
entity of ACC

By:
__
/s/ Richard W. Brown
____________________
Richard W. Brown
Chairman

SCHEDULE 13G - To be included in statements filed pursuant to Rule 13d-1(b) or 
13d-2(b).

                                   EXHIBIT A                                    
This Exhibit has been prepared to identify each subsidiary of American Century 
Companies, Inc. ("ACC"), which is controlled by the Stowers Institute for 
Medical Research, that is a beneficial owner of securities that are the 
subject of this schedule (the "Subject Securities").  American Century 
Investment Management, Inc. ("ACIM") is a wholly-owned subsidiary of ACC and 
an investment adviser registered under (s)203 of the Investment Advisers Act 
of 1940.
SCHEDULE 13G - To be included in statements filed pursuant to Rule 13d-1(b) or 
13d-2(b) and Rule 13d-1(f) (1) Agreement.


                               Page 8 of 9 Pages                                

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                                   EXHIBIT B                                    
Each of the undersigned hereby agrees and consents to the execution and joint 
filing on its behalf by American Century Investment Management, Inc. of this 
Schedule 13G respecting the beneficial ownership of the securities which are 
the subject of this schedule.

Dated this 9th day of February, 2024.

AMERICAN CENTURY CAPITAL PORTFOLIOS, INC. ("ACCP")

AMERICAN CENTURY INVESTMENT MANAGEMENT, INC. ("ACIM")

AMERICAN CENTURY COMPANIES, INC. ("ACC")

By:
__
/s/ John Pak
__________________________
John Pak
Senior Vice President, ACCP, ACIM and ACC


STOWERS INSTITUTE FOR MEDICAL RESEARCH, solely in its capacity as control 
entity of ACC

By:
__
/s/ Richard W. Brown
____________________
Richard W. Brown
Chairman











                               Page 9 of 9 Pages                                

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