Company: MCHB
Filing Date: 2025-03-31
Form Type: 425
Source: 0001518715-25-000032
Chunk: 5

Company: Mechanics Bancorp
Filing Date: 2025-03-31
Form: 425
Chunk 5
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 on June 18, 2024, as filed with the SEC on Schedule 14A on May 16, 2024 (and which is available at https://www.sec.gov/Archives/edgar/data/1518715/000155278124000348/e24254_hmst-defm14a.htm). To the extent holdings of HomeStreet common stock by the directors and executive officers of HomeStreet have changed from the amounts held by such

persons as reflected therein, such changes have been or will be reflected on Statements of Change in Ownership on Form 4 filed with the SEC. Free copies of these documents may be obtained as described above.

.

| Item 9.01    
 (d)          
 Exhibit 99.1 
 Exhibit 99.2 |     | Financial Statements and Exhibits                                                
 Exhibits.                                                                        
 Mechanics Bank and  HomeStreet, Inc. Investor Presentation dated March 31, 2025  
 Joint Press Release of Mechanics Bank and  HomeStreet, Inc. dated March 31, 2025 |
|:-------------|:----|:---------------------------------------------------------------------------------|
| Exhibit 104  |     | Cover Page Interactive Data File (embedded within with Inline XBRL)              |

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: March 31, 2025

| HomeStreet, Inc. |     |                                                      |
| By:              |     | /s/ John M. Michel                                   |
|                  |     | John M. Michel                                       |
|                  |     | Executive Vice President and Chief Financial Officer |