Company: MCHB
Filing Date: 2025-07-16
Form Type: 424B3
Source: 0001140361-25-026051
Chunk: 738

Company: Mechanics Bancorp
Filing Date: 2025-07-16
Form: 424B3
Chunk 738
---
 Written Consent transmitted by facsimile or by electronic mail in .pdf form or by any other means of electronic transmission shall be deemed original signatures for all purposes, and such execution and transmission shall be considered valid, binding and effective for all purposes.

This Written Consent shall be effective as of the execution and delivery of this Written Consent in accordance with the terms of the Merger Agreement and shall be filed with the corporate records of the Corporation. To the extent permissible under applicable law, each Consenting Holder hereby waives any and all notice requirements applicable to, or triggered by, the Merger Agreement and the Transactions under applicable law or that are contained in (a) the Restated Articles of Incorporation of the Corporation, (b) the Bylaws of the Corporation or (c) any agreement between the Corporation and such Consenting Holder or under applicable law.

<div align='center'>[ Signature page follows ]

G-20</div>

TABLE OF CONTENTS

IN WITNESS WHEREOF, the undersigned has executed this Written Consent on the date set forth below.

| [CONSENTING HOLDER] |     |        |
| By:                 |     |        |
|                     |     | Name:  |
|                     |     | Title: |
| Date:               |     |        |

G-21

TABLE OF CONTENTS

Annex A Consenting Holder Shares

| Shares of Common Stock |
| [•]                    |

G-22

#### TABLE OF CONTENTS

#### Annex B

#### Merger Agreement
<div align='center'>G-23</div>

#### TABLE OF CONTENTS

#### Annex H
EXECUTION VERSION

### REGISTRATION RIGHTS AGREEMENT
<div align='center'>by and among

HOMESTREET, INC.

MECHANICS BANK

and

THE OTHER PARTIES HERETO

Dated as of March 28, 2025

H-1</div>

TABLE OF CONTENTS

TABLE OF CONTENTS

|                                |     |                                                                                   |     | Page |
| ARTICLE I                      |     |                                                                                   |     |      |
| DEFINITIONS; INTERPRETATION    |     |                                                                                   |     |      |
| Section 1.1                    |     | Certain Definitions                                                               |     | H-4  |
| Section 1.2                    |     | Additional Definitions                                                            |     | H-7  |
| Section 1.3                    |     | General Rules of Interpretation                                                   |     | H-8  |
| ARTICLE