# EDGAR Filing Document

**Accession Number:** 0001396928
**File Stem:** 0001518715-25-000151
**Filing Date:** 2025-9
**Character Count:** 8352
**Document Hash:** 58d22d928ba25c421afa82e107eda24d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001518715-25-000151.hdr.sgml**: 20250904

**ACCESSION NUMBER**: 0001518715-25-000151

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250902

**FILED AS OF DATE**: 20250904

**DATE AS OF CHANGE**: 20250904

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** MASON MARK K
- **CENTRAL INDEX KEY:** 0001396928

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-35424
- **FILM NUMBER:** 251294861

**MAIL ADDRESS:**
- **STREET 1:** 601 UNION STREET, SUITE 2000
- **CITY:** SEATTLE
- **STATE:** WA
- **ZIP:** 98101

**FORMER NAME:**
- **FORMER CONFORMED NAME:** Mason Mark K
- **DATE OF NAME CHANGE:** 20070418
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Mechanics Bancorp
- **CENTRAL INDEX KEY:** 0001518715
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 910186600
- **STATE OF INCORPORATION:** WA
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 1111 CIVIC DRIVE
- **STREET 2:** SUITE 390
- **CITY:** WALNUT CREEK
- **STATE:** CA
- **ZIP:** 94596
- **BUSINESS PHONE:** 206-623-3050

**MAIL ADDRESS:**
- **STREET 1:** 1111 CIVIC DRIVE
- **STREET 2:** SUITE 390
- **CITY:** WALNUT CREEK
- **STATE:** CA
- **ZIP:** 94596

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** HomeStreet, Inc.
- **DATE OF NAME CHANGE:** 20110420

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[x] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>MASON MARK K<br><sub>(Last) (First) (Middle)</sub><br>1111 CIVIC DRIVE<br>SUITE 390<br><sub>(Street)</sub><br>WALNUT CREEK, CA 94596<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-09-02 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_CEO, President_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Mechanics Bancorp [ MCHB ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-09-02 |  | A |  | 14848<sup>(1)</sup> | A | 0<sup>(2)</sup> | 213196 | D |  |
| Common Stock | 2025-09-02 |  | F |  | 6430<sup>(3)</sup> | D | $13.87 | 206766 | D |  |
| Common Stock | 2025-09-02 |  | A |  | 33333<sup>(1)</sup> | A | 0<sup>(4)</sup> | 240099 | D |  |
| Common Stock | 2025-09-02 |  | F |  | 14434<sup>(3)</sup> | D | $13.87 | 225665 | D |  |
| Common Stock |  |  |  |  |  |  |  | 2800<sup>(5)</sup> | I | Courtney Mason, Mr. Mason's spouse |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs").  Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs.  In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

(2) Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2023. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU.  The unvested portion of the PSU was cancelled.

(3) Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

(4) Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2024. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU.  The unvested portion of the PSU was cancelled.

(5) These shares are owned by the Reporting Person's spouse. Mr. Mason disclaims beneficial ownership of these shares except to the extent of any pecuniary interest he may have therein.

**Remarks:**
The Reporting Person resigned as an officer of HomeStreet, Inc. in accordance with the terms of the Agreement and Plan of Merger, with such resignation effective as of the effective time of the merger on September 2, 2025.  As a result, the Reporting Person is no longer subject to Section 16 in connection with his transactions in the equity securities of the Issuer and therefore no further transactions on Form 4 or Form 5 will be reported.

**Signature:** /s/ Godfrey B. Evans, Attorney-in-Fact for Mark K. Mason  
**Date:** 2025-09-04

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**