As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 5/13/24  Renaissance Technologies LLC      13F-HR      3/31/24    2:1.5M                                                            
  5/2/24‡ Barrett Business Services Inc.    10-Q        3/31/24   45:7M                                     Donnelley … Solutions/FA 
  5/1/24  Barrett Business Services Inc.    8-K:2,7,9    5/1/24    9:393K                                   Donnelley … Solutions/FA 
 4/22/24  Barrett Business Services Inc.    ARS        12/31/23    1:16M                                    Donnelley … Solutions/FA 
 4/22/24  Barrett Business Services Inc.    DEFA14A                1:5.8M                                   Donnelley … Solutions/FA 
 4/22/24  Barrett Business Services Inc.    DEF 14A     4/22/24    8:14M                                    Donnelley … Solutions/FA 
 4/10/24  Barrett Business Services Inc.    PRE 14A      4/9/24    9:14M                                    Donnelley … Solutions/FA 
 4/10/24  Barrett Business Services Inc.    8-K:8,9     4/10/24    9:176K                                   Donnelley … Solutions/FA 
  3/1/24  Barrett Business Services Inc.    10-K       12/31/23   75:12M                                    Donnelley … Solutions/FA 
 2/28/24  Potts James R                     4          Officer²    2:8K   Barrett Business Services Inc.    Solium Capital Inc.      
 2/28/24  Harris Anthony J                  4          Officer²    1:5K   Barrett Business Services Inc.    Solium Capital Inc.      
 2/28/24  Blotz Gerald                      4          Officer²    1:5K   Barrett Business Services Inc.    Solium Capital Inc.      
 2/28/24  Kramer Gary                       4          Officer²    1:5K   Barrett Business Services Inc.    Solium Capital Inc.      
 2/28/24  Barrett Business Services Inc.    8-K:2,7,9   2/28/24    9:499K                                   Donnelley … Solutions/FA 
 2/13/24  Vanguard Group Inc.               SC 13G/A               1:13K  Barrett Business Services Inc.    Toppan Merrill/FA        
 2/13/24  Renaissance Technologies LLC      13F-HR     12/31/23    2:1.5M                                                            
 2/13/24  Renaissance Technologies LLC      SC 13G/A               1:12K  Waterstone Financial, Inc.                                 
 2/13/24  Renaissance Technologies LLC      SC 13G                 1:12K  Alpha Pro Tech Ltd.                                        
 2/13/24  Renaissance Technologies LLC      SC 13G/A               1:12K  Western New England Bancorp, Inc.                          
 2/13/24  Renaissance Technologies LLC      SC 13G/A               1:12K  Westwood Holdings Group Inc.                               

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‡	A non-Insider-Ownership Filing that was accepted after the SEC “closed” at 5:30:00pm ET.  The legal “Filed As Of” date may be the next, or another, day.
¹	Filing/Form Types:
	4	Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 { The Filer is an Insider² of the Issuer }.
	8-K	Current Report — Form 8-K { Item 1: Business & Operations;  2: Financial Info;  3: Securities & Trading;  4: Accountants & Accounting;  5: Governance & Management;  6: Asset-Backed Securities;  7: Disclosures;  8: Events;  9: Financials }.
	10-K	Annual Report — Form 10-K.
	10-Q	Quarterly Report — Form 10-Q.
	13F-HR	Quarterly Holdings and Combination Report by a Money Manager — Form 13F.
	ARS	Annual Report to Security Holders.
	DEF 14A	Definitive Proxy Statement — Schedule 14A.
	DEFA14A	Definitive Additional Proxy Soliciting Material — Schedule 14A.
	PRE 14A	Preliminary Proxy Statement — Schedule 14A.
	SC 13G	Statement of Acquisition of Beneficial Ownership by a “Passive” Investor — Schedule 13G.
	/A	Amendment to, or Amended version of, a previous Filing of this Type.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.