Form 8-K

8-K — Mechanics Bancorp

Accession: 0001518715-26-000068

Filed: 2026-09-17

Period: 2026-09-16

CIK: 0001518715

SIC: 6022 (STATE COMMERCIAL BANKS)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — hmst-20260916.htm (Primary)

EX-99.1 — EX-99.1 AUTO PORTFOLIO SALE PRESS RELEASE (mchbautoportfoliosalesept2.htm)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_______________________________

FORM 8-K

_______________________________

CURRENT REPORT

Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 16, 2026

________________________________

MECHANICS BANCORP

________________________________

(Exact name of registrant as specified in its charter)

Washington 001-35424 91-0186600

(State or other jurisdiction

of incorporation) (Commission

File Number) (IRS Employer

Identification No.)

1111 Civic Drive, Walnut Creek, CA 94596

(Address of principal executive offices) (Zip Code)

(925) 482-8000

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

Class A Common Stock, No Par Value MCHB The Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐ Emerging growth Company

☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 8.01 Other Events

On September 16, 2026, Mechanics Bancorp issued a press release announcing the completion of the sale by its wholly owned subsidiary, Mechanics Bank, of approximately $417 million of its remaining performing indirect auto loans to Bank of America’s trading desk. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits.

Exhibit 99.1

Mechanics Bancorp Press Release Dated September 16, 2026

Exhibit 104 Cover Page Interactive Data File (embedded within with Inline XBRL)

SIGNATURE

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: September 16, 2026

MECHANICS BANCORP

By: /s/ Nathan Duda

Nathan Duda

Executive Vice President and Chief Financial Officer

EX-99.1 — EX-99.1 AUTO PORTFOLIO SALE PRESS RELEASE

EX-99.1

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Document

Mechanics Bank Completes Sale of Substantial Majority of Runoff Auto Loan Portfolio to Bank of America

September 16, 2026

WALNUT CREEK, Calif.– Mechanics Bancorp (“Mechanics”) (Nasdaq: MCHB) announced today that its wholly owned subsidiary, Mechanics Bank, completed the sale to Bank of America’s trading desk of approximately $417 million of its remaining performing indirect auto loans at a price near book value, with a cutoff date of August 31, 2026. Mechanics Bank will retain approximately $13 million of runoff auto loans. Westlake Portfolio Management will continue to service the auto loans for both Bank of America and Mechanics Bank.

C.J. Johnson, President and CEO of Mechanics, said: “This transaction represents another important step in our ongoing efforts to optimize our balance sheet and allocate capital to its highest and best use. The sale of the substantial majority of our runoff auto loans will reduce risk, improve liquidity and enhance the future profitability of our company.”

About Mechanics Bancorp

Mechanics Bancorp is headquartered in Walnut Creek, Calif., and is the financial holding company of Mechanics Bank, a full-service, FDIC-insured bank with $21.2 billion in assets as of June 30, 2026, and 166 branches across California, Oregon, Washington and Hawaii. Founded in 1905 to help families, businesses and communities prosper, Mechanics Bank offers a wide range of products and services in consumer and business banking, commercial lending, cash management services, private banking, and comprehensive wealth management and trust services.

To learn more, visit www.MechanicsBank.com.

Cautionary Note Regarding Forward Looking Statements

This communication contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 (the “Reform Act”). All statements other than statements of historical facts included herein may be forward-looking statements. Generally, forward-looking statements include the words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “will,” “plan,” “potential,” “predict,” “goal,” “upcoming,” “outlook,” “guidance” or “project” or the negative of those terms, or similar expressions. We do not assume any obligation or undertake to update any forward-looking statements after the date of this release as a result of new information, future events or developments, except as required by federal securities or other applicable laws, although we may do so from time to time. For all forward-looking statements, we claim the protection of the safe harbor for forward-looking statements contained in the Reform Act.

We caution readers that such forward-looking statements involve known and unknown risks and uncertainties, assumptions, estimates and other important factors that could cause actual results to differ materially from any results, performance or events expressed in or implied by such forward-looking statements, including with respect to the anticipated benefits of the sale of the substantial majority of our

runoff auto loan portfolio. These risks, uncertainties and other factors include macroeconomic pressures and general uncertainty regarding the overall future economic environment.

A discussion of the factors, risks and uncertainties that could affect our financial results, business goals and operational and financial objectives can be found in our public statements and/or filings with the Securities and Exchange Commission (the “SEC”), including our 2025 Annual Report on form 10-K, filed with the SEC. We strongly recommend readers review those disclosures in conjunction with the discussions herein. Forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or qualified, and should not be relied upon as a prediction of actual results or future events.

All future written and oral forward-looking statements attributable to us or any person acting on our behalf are expressly qualified in their entirety by the cautionary statements contained or referred to above. New risks and uncertainties arise from time to time, and factors that we currently deem immaterial may become material, and it is impossible for us to predict these events or how they may affect us.

Mechanics Bancorp: Greg Jones, gregory_jones@mechanicsbank.com, (916) 797-8218

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