Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Downer Douglas E 2. Issuer Name and Ticker or Trading Symbol Mechanics Bancorp [MCHB] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 1111 CIVIC DR STE 390 3. Date of Earliest Transaction (Month/Day/Year) 05/27/2026 (Street) WALNUT CREEK, CA 94596-3895 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock 05/27/2026 M 3,301 A $ 0 (1) 2,317,764(2) I Douglas E Downer Revocable Trust Class A Common Stock 1,121,270 I Douglas Downer Family Dynasty Trust(3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units

(1)

05/27/2026

M

3,301(2)

(4)

(4)

Class A Common Stock

3,301

$ 0

0

D

Restricted Stock Units

(1)

05/28/2026

A

5,513

(5)

(5)

Class A Common Stock

5,513

$ 0

5,513

D

Incentive Units - Deferred

(6)

(7)

(7)

Class A Common Stock

2,554

2,792(8)

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Downer Douglas E 1111 CIVIC DR STE 390 WALNUT CREEK, CA 94596-3895	X

Signatures

/s/ Glenn Shrader, Attorney in fact for Douglas E. Downer		05/29/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Mechanics Bancorp (the "Company") Class A common stock. RSUs do not require the holder to pay any consideration on vesting.
(2)	Granted but unvested RSUs were previously reported in Table I. Going forward, granted but unvested RSUs will be reported in Table II and will be reported in Table I when they vest and convert into Class A common stock. Share totals of securities beneficially owned following reported transaction(s) reported in Table I have been adjusted to reflect this change in reporting and do not include unvested RSUs.
(3)	E. Michael Downer is the voting trustee for the Douglas Downer Family Dynasty Trust.
(4)	On May 21, 2025, the Reporting Person was granted the equivalent of 3,301 of the Company's RSUs, which vest on May 27, 2026. Upon vesting, the Reporting Person will receive a number of shares of the Company's Class A common stock equal to the number of RSU's that vest on that date.
(5)	On May 28, 2026, the Reporting Person was granted 5,513 RSUs, which vest on May 28, 2027. Upon vesting, the Reporting Person will receive a number of shares of the Company's Class A common stock equal to the number of RSU's that vest on that date.
(6)	Each incentive unit is the economic equivalent of one share of Issuer Class A common stock.
(7)	The Reporting Person has elected to defer payment on such incentive units until the earlier of (i) the retirement or termination of the Reporting Person, or (ii) a change in control of Issuer.
(8)	Includes 73 incentive units acquired on March 19, 2026 and 128 incentive units acquired on May 28, 2026.

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