| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Duda Nathan | EVP & CFO | 1111 CIVIC DRIVE, SUITE 390, WALNUT CREEK | /s/ Glenn Shrader, Attorney in fact for Nathan Duda | 05 Jan 2026 | 0001602088 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MCHB | Class A Common Stock | Award | +14,682 | 14,682 | 02 Sep 2025 | Direct | F1, F2 | |||
| transaction | MCHB | Class A Common Stock | Award | $0 | +21,818 | +149% | $0.000000 | 36,500 | 26 Sep 2025 | Direct | |
| transaction | MCHB | Class A Common Stock | Tax liability | $71,731 | -4,903 | -13% | $14.63 | 31,597 | 31 Dec 2025 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MCHB | Incentive Units - Deferred | Award | $0 | +104,920 | +6935% | $0.000000 | 106,433 | 02 Sep 2025 | Class A Common Stock | 104,920 | Direct | F2, F3, F4, F5 | |
| transaction | MCHB | Incentive Units - Not Deferred (2024) | Award | $0 | +13,117 | $0.000000 | 13,117 | 02 Sep 2025 | Class A Common Stock | 13,117 | Direct | F2, F3, F6 |
| Id | Content |
|---|---|
| F1 | Received in exchange for 4.45 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"). |
| F2 | 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. |
| F3 | Each incentive unit is the economic equivalent of one share of Issuer Class A Common Stock. |
| F4 | 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. |
| F5 | Includes 1,513 incentive units acquired on December 15, 2025 pursuant to dividend reinvestment. |
| F6 | The incentive units vest in three equal annual installments beginning February 15, 2026. |