Company: MCHB
Filing Date: 2025-07-16
Form Type: 424B3
Source: 0001140361-25-026051
Chunk: 9

Company: Mechanics Bancorp
Filing Date: 2025-07-16
Form: 424B3
Chunk 9
---
 this notice to the same extent as if fully set forth herein. The Mechanics board of directors considered the terms of the merger agreement and has unanimously determined that the entry into the merger agreement and the consummation of the transactions contemplated thereby, on the terms and conditions set forth in the merger agreement, are advisable and in the best interests of Mechanics and its shareholders and recommended that Mechanics shareholders entitled to consent approve the Mechanics merger proposal. The Mechanics board of directors recommends that eligible Mechanics shareholders execute and deliver a written consent to approve the merger proposal. Please complete, date and sign the written consent furnished with the accompanying proxy statement/prospectus/consent solicitation statement and return it promptly to Mechanics by one of the means described in the section entitled “ Mechanics Solicitation of Written Consents.”

| By Order of the Board of Directors, |
| Carl B. Webb                        |
| Chairman of the Board of Directors  |

#### TABLE OF CONTENTS

### ADDITIONAL INFORMATION
As permitted by the rules of the U.S. Securities and Exchange Commission (the “SEC”), this proxy statement/prospectus/consent solicitation statement incorporates important business and financial information about HomeStreet from other documents that are not included in or delivered with this proxy statement/prospectus/consent solicitation statement. This information is available to you without charge upon your written or oral request. You can obtain the documents incorporated by reference in this document through the SEC website at http://www.sec.gov. Documents filed by HomeStreet with the SEC are also available from HomeStreet’s website at https://ir.homestreet.com/corporate-profile/default.aspx under the tab “SEC Filings” and are also available to you, free of charge, upon your request in writing, by email or by telephone to HomeStreet at the address and telephone number below:

#### HomeStreet, Inc.

#### 601 Union Street, Suite 2000

#### Seattle, Washington 98101

#### Telephone: (206) 623-3050
**You will not be charged for any of these documents that you request. To obtain timely delivery of these documents, you must request them, by written or oral means,**

### no later than five (5) business days
**before the date of the HomeStreet special meeting. This means that holders of HomeStreet common stock requesting documents must do so by August 14, 2025, to receive them before the HomeStreet special meeting.

See the section entitled “ Where You Can Find More Information ” of the accompanying proxy statement/prospectus