Barrett Business Services, Inc.
US ˙ NasdaqGS ˙ US0684631080

SecurityBBSI / Barrett Business Services, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership658,122 shares
Latest Disclosed Value $ 19,204,000
State Street Corp reports 2.45% increase in ownership of BBSI / Barrett Business Services, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 658,122 shares of Barrett Business Services, Inc. (US:BBSI) valued at $19,204,000 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 642,381 shares of Barrett Business Services, Inc.. This represents a change in shares of 2.45% during the quarter. The current value of the position is $21,388,965 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F BARRETT BUSINESS SVCS COM 068463108 658,122 15,741 2.45 19,204 -17.44 0.0007
2026-02-13 2025-12-31 13F BARRETT BUSINESS SVCS COM 068463108 642,381 -11,098 -1.70 23,261 -19.69 0.0008
2025-11-14 2025-09-30 13F BARRETT BUSINESS SVCS COM 068463108 653,479 -10,431 -1.57 28,962 4.64 0.0010
2025-08-14 2025-06-30 13F BARRETT BUSINESS SVCS COM 068463108 663,910 6,576 1.00 27,678 2.33 0.0010
2025-05-15 2025-03-31 13F BARRETT BUSINESS SVCS COM 068463108 657,334 -788 -0.12 27,049 -5.38 0.0011
2025-02-14 2024-12-31 13F BARRETT BUSINESS SVCS COM 068463108 658,122 -11,131 -1.66 28,589 13.88 0.0011
2024-11-14 2024-09-30 13F BARRETT BUSINESS SVCS COM 068463108 669,253 1,466 0.22 25,104 14.71 0.0010
2024-08-14 2024-06-30 13F BARRETT BUSINESS SVCS COM 068463108 667,787 495,662 287.97 21,883 0.33 0.0010
2024-05-15 2024-03-31 13F BARRETT BUSINESS SVCS COM 068463108 172,125 3,237 1.92 21,812 11.53 0.0010
2024-02-14 2023-12-31 13F BARRETT BUSINESS SVCS COM 068463108 168,888 4,123 2.50 19,557 31.54 0.0010
2023-11-14 2023-09-30 13F BARRETT BUSINESS SVCS COM 068463108 164,765 -7,018 -4.09 14,868 -0.74 0.0008
2023-08-14 2023-06-30 13F BARRETT BUSINESS SVCS COM 068463108 171,783 -33,361 -16.26 14,979 -17.62 0.0008
2023-05-15 2023-03-31 13F BARRETT BUSINESS SVCS COM 068463108 205,144 1,410 0.69 18,184 -4.32 0.0010
2023-05-15 2022-12-31 13F/A-99 BARRETT BUSINESS SVCS COM 068463108 203,734 1,900 0.94 19,004 20.71 0.0011
2023-05-15 2022-12-31 13F BARRETT BUSINESS SVCS COM 068463108 203,734 1,900 19,004 0.0011
2022-11-15 2022-09-30 13F BARRETT BUSINESS SVCS COM 068463108 201,834 -1,733 -0.85 15,743 6.13 0.0010
2022-08-15 2022-06-30 13F BARRETT BUSINESS SVCS COM 068463108 203,567 9,051 4.65 14,834 -1.88 0.0009
2022-05-16 2022-03-31 13F BARRETT BUSINESS SVCS COM 068463108 194,516 33,234 20.61 15,118 35.73 0.0007
2022-02-14 2021-12-31 13F BARRETT BUSINESS SVCS COM 068463108 161,282 1,279 0.80 11,138 -8.72 0.0005
2021-11-15 2021-09-30 13F BARRETT BUSINESS SVCS COM 068463108 160,003 -210 -0.13 12,202 4.89 0.0006
2021-08-16 2021-06-30 13F BARRETT BUSINESS SVCS COM 068463108 160,213 7,846 5.15 11,633 10.40 0.0006
2021-07-09 2021-03-31 13F/A-1 BARRETT BUSINESS SVCS COM 068463108 152,367 -11,255 -6.88 10,537 -5.59 0.0006
2021-05-17 2021-03-31 13F BARRETT BUSINESS SVCS COM 068463108 152,367 -11,255 10,537 0.0006
2021-02-16 2020-12-31 13F BARRETT BUSINESS SVCS COM 068463108 163,622 -5,487 -3.24 11,161 25.86 0.0007
2020-11-10 2020-09-30 13F BARRETT BUSINESS SVCS COM 068463108 169,109 -3,882 -2.24 8,868 -3.51 0.0006
2020-08-14 2020-06-30 13F BARRETT BUSINESS SVCS COM 068463108 172,991 3,412 2.01 9,191 36.73 0.0007
2020-06-19 2020-03-31 13F/A-1 BARRETT BUSINESS SVCS COM 068463108 169,579 -2,625 -1.52 6,722 -56.85 0.0006
2020-05-11 2020-03-31 13F BARRETT BUSINESS SVCS COM 068463108 169,579 -2,625 6,722 590.3269
2020-02-06 2019-12-31 13F BARRETT BUSINESS SERVICES IN COM 068463108 172,204 5,630 3.38 15,578 5.29 0.0011
2019-11-14 2019-09-30 13F BARRETT BUSINESS SERVICES IN COM 068463108 166,574 -6,854 -3.95 14,795 3.28 0.0011
2019-08-14 2019-06-30 13F BARRETT BUSINESS SERVICES IN COM 068463108 173,428 14,196 8.92 14,325 16.34 0.0011
2019-05-15 2019-03-31 13F BARRETT BUSINESS SERVICES IN COM 068463108 159,232 2,808 1.80 12,313 37.50 0.0010
2019-02-12 2018-12-31 13F BARRETT BUSINESS SERVICES IN COM 068463108 156,424 -3,465 -2.17 8,955 -16.15 0.0008
2018-11-09 2018-09-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 159,889 13,137 8.95 10,680 -24.64 0.0008
2018-08-14 2018-06-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 146,752 5,737 4.07 14,172 21.27 0.0012
2018-05-15 2018-03-31 13F BARRETT BUSINESS SVCS Common equity shares 068463108 141,015 2,258 1.63 11,686 30.64 0.0010
2018-02-14 2017-12-31 13F BARRETT BUSINESS SVCS Common equity shares 068463108 138,757 -445 -0.32 8,945 13.69 0.0007
2017-11-14 2017-09-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 139,202 -531 -0.38 7,868 -1.69 0.0007
2017-08-14 2017-06-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 139,733 8,235 6.26 8,003 11.42 0.0007
2017-05-15 2017-03-31 13F BARRETT BUSINESS SVCS Common equity shares 068463108 131,498 2,144 1.66 7,183 -13.35 0.0006
2017-02-09 2016-12-31 13F BARRETT BUSINESS SVCS Common equity shares 068463108 129,354 2,279 1.79 8,290 31.38 0.0008
2017-01-13 2016-09-30 13F/A-1 BARRETT BUSINESS SVCS Common equity shares 068463108 127,075 -1,575 -1.22 6,310 18.72 0.0006
2016-11-14 2016-09-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 127,075 6,310
2016-08-12 2016-06-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 128,650 -6,226 -4.62 5,315 36.91 0.0006
2016-05-20 2016-03-31 13F/A-1 BARRETT BUSINESS SVCS Common equity shares 068463108 134,876 3,677 2.80 3,882 -32.05 0.0004
2016-05-12 2016-03-31 13F BARRETT BUSINESS SVCS Common equity shares 068463108 134,876 3,882
2016-02-16 2015-12-31 13F BARRETT BUSINESS SVCS Common equity shares 068463108 131,199 1,562 1.20 5,713 2.70 0.0006
2015-11-16 2015-09-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 129,637 -3,879 -2.91 5,563 14.68 0.0006
2015-08-13 2015-06-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 133,516 3,332 2.56 4,851 -13.05 0.0005
2015-05-15 2015-03-31 13F BARRETT BUSINESS SVCS Common equity shares 068463108 130,184 2,852 2.24 5,579 60.09 0.0006
2015-02-11 2014-12-31 13F BARRETT BUSINESS SVCS Common equity shares 068463108 127,332 3,930 3.18 3,485 -28.53 0.0003
2014-11-12 2014-09-30 13F/A-1 BARRETT BUSINESS SVCS Common equity shares 068463108 123,402 -4,897 -3.82 4,876 -19.11 0.0005
2014-11-10 2014-09-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 123,402 4,876
2014-08-12 2014-06-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 128,299 -2,934 -2.24 6,028 -22.92 0.0007
2014-05-15 2014-03-31 13F/A-1 BARRETT BUSINESS SVCS Common equity shares 068463108 131,233 53 0.04 7,820 -35.73 0.0009
2014-05-13 2014-03-31 13F BARRETT BUSINESS SVCS Common equity shares 068463108 131,233 7,820
2014-02-06 2013-12-31 13F/A-1 BARRETT BUSINESS SVCS Common equity shares 068463108 131,180 2,079 1.61 12,168 39.99 0.0014
2014-02-06 2013-12-31 13F BARRETT BUSINESS SVCS Common equity shares 068463108 140,729 5,358
2013-11-12 2013-09-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 129,101 -11,614 -8.25 8,692 18.31 0.0011
2013-08-08 2013-06-30 13F BARRETT BUSINESS SVCS Common equity shares 068463108 140,715 140,715 7,347 0.0010
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.