Company: MCHB
Filing Date: 2025-07-15
Form Type: S-4/A
Source: 0001140361-25-025920
Chunk: 712

Company: Mechanics Bancorp
Filing Date: 2025-07-15
Form: S-4/A
Chunk 712
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 Ford Financial Fund III, L.P. |     |                           |
| By:                           |     | Ford Management III, L.P. |
|                               |     | Its General Partner       |

| By: |     | Ford Ultimate Management II, LLC |
|     |     | Its General Partner              |

| By: |     | /s/ Carl B. Webb       |
|     |     | Name: Carl B. Webb     |
|     |     | Title: Managing Member |

F-10

TABLE OF CONTENTS

Schedule 1

| Holder                        |     | Shares of Voting 
   Company Common 
            Stock |     | Notice Information |
| EB Acquisition Company LLC    |     |           24,578 |     | ****               |
| EB Acquisition Company II LLC |     |           27,455 |     | ****               |

F-11

#### TABLE OF CONTENTS

#### Exhibit A
FINAL FORM

#### Form of

#### Action by Written Consent of Shareholders

#### of

### MECHANICS BANK

#### [Date]
<div align='center'>Pursuant to Section 603 of the Corporations Code of the State of California</div>

The undersigned (the “ Consenting Holders ”), being holders of issued and outstanding shares of the common stock, par value $50 per share (the “ Common Stock ”, which shares of Common Stock are set forth on Annex A ), of Mechanics Bank, a California corporation (the “ Corporation ”), in accordance with Section 603 of the California Corporations Code (the “ CCC ”), as amended, and Section 2.11 of the Bylaws of the Corporation, hereby irrevocably consent in writing to the following actions in lieu of a meeting of the shareholders of the Corporation (the “ Shareholder s”), with the same force and effect as if taken at a duly convened meeting of the Shareholders:

Shareholder Approval

WHEREAS , the Board of Directors of the Corporation (the “ Board”) has (a) approved and declared advisable that certain Agreement and Plan of Merger, dated as of March 28, 2025 (the “ Merger Agreement”), by and among the Corporation, HomeStreet, Inc., a Washington corporation (“ Parent”), and HomeStreet Bank, a Washington state-chartered commercial bank and a direct and wholly owned subsidiary of Parent (“ Parent Bank”), a copy of which has been provided to the undersigned Consenting Holders and is attached hereto as Annex B(capitalized terms used but