Transaction Details

Footnotes

Received in exchange for an aggregate of 747 shares of Mechanics Bank ("MB") original voting common stock and MB restricted stock units in connection with the merger of HomeStreet Bank, a wholly owned subsidiary of Issuer, with and into MB, pursuant to which MB continued as the surviving corporation and as a wholly owned subsidiary of Issuer (the "Merger"). | As consideration for the Merger, (i) each share of MB voting common stock converted into the right to receive 3,301.0920 shares of Issuer Class A Common Stock, which, on the effective date of the Merger, had a closing price of $13.87 per share, (ii) each MB restricted stock unit of the Reporting Person converted into restricted stock units of Issuer for the right to receive 3,301.0920 shares of Issuer Class A Common Stock, and (iii) each MB incentive unit of the Reporting Person converted into incentive units of Issuer of the economic equivalent of 3,301.0920 shares of Issuer Class A Common Stock. | Received in exchange of 339 shares of MB original voting common stock in connection with the Merger. E. Michael Downer is the voting trustee for the Douglas Downer Family Dynasty Trust. | On October 7, 2025, the reporting person gifted 75,000 shares of the issuer's Class A common stock to his son's trust, Robert P. Downer, TTEE, Jack Y. Downer Irrevocable Tr U/A Dtd 7/23/25. The reporting person disclaims any pecuniary interest in these shares. | On October 7, 2025, the reporting person gifted 75,000 shares of the issuer's Class A common stock to his daughter's trust, Robert P. Downer, TTEE, Grace Y. Downer Irrevocable Tr U/A Dtd 7/23/25. The reporting person disclaims any pecuniary interest in these shares. | Each incentive unit is the economic equivalent of one share of Issuer Class A Common Stock. | The Reporting Person has elected to defer payment on such incentive units until the earlier of (i) the retirement or termination of the Reporting Person, or (ii) a change in control of Issuer. | Includes 37 dividend equivalent incentive units acquired on December 15, 2025.