Form: SCHEDULE 13G/A

Statement of Beneficial Ownership by Certain Investors

May 12, 2026






Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Checkbox checked   Rule 13d-1(b)
Checkbox not checked   Rule 13d-1(c)
Checkbox not checked   Rule 13d-1(d)




schemaVersion:


SCHEDULE 13G




Comment for Type of Reporting Person:  Based upon 25,203,090 Common Stock of Barrett Business Services Inc. (the "Issuer") outstanding as of February 11, 2026, as reported in the Issuer's 10-K filed with the Securities and Exchange Commission on February 26, 2026.


SCHEDULE 13G



 
Mawer Investment Management Ltd.
 
Signature:/s/ John Wilson
Name/Title:John Wilson, Portfolio Manager
Date:05/01/2026