Company: MCHB
Filing Date: 2025-07-16
Form Type: 424B3
Source: 0001140361-25-026051
Chunk: 194

Company: Mechanics Bancorp
Filing Date: 2025-07-16
Form: 424B3
Chunk 194
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 directors. After completion of the merger, the combined company’s board of directors will continue to have such standing committees, other than the executive committee. Because the combined company will be a “controlled company” under the corporate governance standards of NASDAQ and the NYSE, the combined company is not required to have a compensation committee composed of independent directors or a nominating and corporate governance committee composed of independent directors.

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#### TABLE OF CONTENTS

### THE MERGER
This section of the proxy statement/prospectus/consent solicitation statement describes material aspects of the merger. This summary may not contain all of the information that is important to you. You should carefully read this entire proxy statement/prospectus/consent solicitation statement and the other documents we refer you to for a more complete understanding of the merger. In addition, we incorporate important business and financial information about HomeStreet into this document by reference. You may obtain the information incorporated by reference into this document without charge by following the instructions in the section entitled “Where You Can Find More Information.”

#### Terms of the Merger
Each of HomeStreet’s and Mechanics’ respective board of directors has unanimously approved the merger agreement and the transactions contemplated thereby, including the merger. The merger agreement provides that, pursuant to the terms and subject to the conditions set forth in the merger agreement, HomeStreet Bank will merge with and into Mechanics, with Mechanics surviving and becoming a wholly owned subsidiary of HomeStreet. In connection with the merger, HomeStreet will be renamed “Mechanics Bancorp”. Following the consummation of the merger, HomeStreet will remain a publicly traded company.

If, prior to the effective time, the outstanding shares of HomeStreet common stock or Mechanics common stock are changed into a different number or class of shares, including by reason of any reclassification, recapitalization, stock split or combination, exchange or readjustment of shares or similar transaction, or stock dividend with a record date before the effective time, excluding any change resulting from vesting or exercise of any Mechanics RSUs and HomeStreet Equity Awards outstanding as of the date on which the merger agreement is entered into, the exchange ratios and any other amounts payable pursuant to the merger agreement will be appropriately adjusted to provide HomeStreet and Mechanics shareholders, as well as holders of Mechanics RSUs and HomeStreet Equity Awards, the same economic effect as contemplated by the merger agreement prior to such event.

Subject to the terms and conditions of the merger agreement, at the effective time of the merger