Form 4 Filing for Barrett Business Services Inc.

This filing details stock transactions by Anthony J. Harris, Executive VP & CFO of Barrett Business Services Inc. (BBSI). On July 1, 2026, Mr. Harris was involved in several transactions concerning Common Stock and Restricted Stock Units (RSUs). Notably, there were acquisitions and dispositions of RSUs, which are contingent rights to receive shares of common stock. These RSUs vest over various periods, with settlement by delivery of unrestricted shares. Specific transactions include the disposition of RSUs totaling thousands of shares, with some resulting in zero shares owned post-transaction, while others resulted in post-transaction holdings of 4,128, 5,945, and 7,174 shares, respectively. There were also acquisitions of RSUs, with post-transaction holdings of 1,987 and 11,343 shares. Concurrently, Mr. Harris engaged in non-derivative transactions involving Common Stock, including acquisitions of varying share amounts with a purchase price of $0.00, and dispositions at a price of $37.73 per share. These transactions resulted in significant post-transaction share ownership, with the highest reported being 111,553 shares after acquisitions and decreasing to 105,923 shares after dispositions.