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) November 18, 2025

SIERRA BANCORP

(Exact name of registrant as specified in its charter)


California	000-33063	33-0937517
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)


86 North Main Street, Porterville, CA 93257
(Address of principal executive offices)	(Zip code)

(559) 782-4900

(Registrant’s telephone number including area code)

Not applicable

(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
Common Stock, no par value	BSRR	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 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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 7.01Regulation FD disclosurE. *

Kevin J. McPhaill, President and Chief Executive Officer and Christopher G. Treece, Executive Vice President and Chief Financial Officer will be attending the Keefe, Bruyette and Woods Virtual West Coast Bank Field Trip. The conference will be held on November 19, 2025. Mr. McPhaill and Mr. Treece will be meeting with current and prospective investors at the conference.

A copy of the presentation materials that Mr. McPhaill and Mr. Treece will be providing to current and prospective investors at the conference is available on the company’s website at www.sierrabancorp.com.

* The information furnished under Item 7.01 of this Current Report on Form 8-K, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that Section, nor shall it be deemed incorporated by reference into any registration statement or other filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act, whether made before or after the date hereof, except as expressly set forth by specific reference in such filing.

SIGNATURES

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

	SIERRA BANCORP



Dated: November 18, 2025	By:	/s/ Christopher G. Treece
		Christopher G. Treece
		Executive Vice President &
		Chief Financial Officer

SIERRA BANCORP 8-K