Form 8-K

8-K — SIERRA BANCORP

Accession: 0001104659-26-045351

Filed: 2026-04-20

Period: 2026-04-20

CIK: 0001130144

SIC: 6022 (STATE COMMERCIAL BANKS)

Item: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Item: Financial Statements and Exhibits

Documents

8-K — bsrr-20260420x8k.htm (Primary)

EX-10.1 (bsrr-20260420xex10d1.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: bsrr-20260420x8k.htm · Sequence: 1

SIERRA BANCORP_April 20, 2026

0001130144false00011301442026-04-202026-04-20

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) April 20, 2026

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 5.02Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

On April 17, 2026, Registrant and its wholly owned subsidiary, Bank of the Sierra (collectively, the “Company”), terminated the employment of William J. Wade II, Executive Vice President & Chief Operations Officer, as part of an organizational realignment. In connection with the termination and in accordance with his employment agreement dated July 7, 2025, Mr. Wade is entitled to severance of a payment equal to twelve (12) months’ salary and reimbursement for health insurance premiums for a period of twelve (12) months. As a condition to receiving this severance, Mr. Wade must sign a release and waiver agreement in favor of the Company, the form of which was attached to his employment agreement, within 21 days of employment termination.

In connection with Mr. Wade’s termination, Christopher Treece, age 57, Executive Vice President & Chief Financial Officer will also assume the role of Chief Operations Officer. Mr. Treece has served as Executive Vice President and Chief Financial Officer of the Company since January 2020. The Board of Directors of the Company approved an amendment to the employment agreement of Mr. Treece to reflect his new role and adjusted compensation of an increase of base salary by $25,000 per year to $466,000 per year as a result of his appointment as Chief Operations Officer. The amendment was signed and became effective on April 17, 2026.

On April 17, 2026, Marc Wolfe was appointed Principal Accounting Officer of the Company. Mr. Wolfe, currently 35 years old, holds both a Bachelor of Business Administration and a Master of Business Administration from National University. Mr. Wolfe has been with the Company since September 2015, serving in roles of increasing responsibility within accounting and finance, including Assistant Controller and Financial Reporting Officer. On January 1, 2026, Mr. Wolfe was promoted to Senior Vice President and Corporate Controller.

There are no arrangements or undertakings pursuant to which Mr. Wolfe was selected as Principal Accounting Officer. There are no family relationships among any of the Company’s directors or executive officers and Mr. Wolfe. There are no related party transactions between the Company and Mr. Wolfe.

Item 9.01financial Statements and Exhibits

(d)Exhibits. The information furnished pursuant to this item is set forth in the Exhibit Index, which appears below immediately before the signatures.

EXHIBIT INDEX

Exhibit No.

Description

10.1

Second amendment to employment agreement effective as of April 17, 2026 for Christopher G. Treece, Chief Financial Officer & Chief Operating Officer

104

Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)

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: April 20, 2026

By:

/s/ Christopher G. Treece

Christopher G. Treece

Executive Vice President &

Chief Financial Officer

EX-10.1

Filename: bsrr-20260420xex10d1.htm · Sequence: 2

Exhibit 10.1

SECOND AMENDMENT TO

EMPLOYMENT AGREEMENT

THIS SECOND AMENDMENT TO EMPLOYMENT AGREEMENT (the “Second Amendment”) is effective as of April 17, 2026, by and between Sierra Bancorp, a California corporation (“Bancorp”), Bank of the Sierra, a California banking corporation (“Bank”), and Christopher G. Treece (“Executive”) on the following terms and conditions.

WHEREAS, the Bank and Bancorp entered into an Employment Agreement with Executive (the “Agreement”) effective January 1, 2020;

WHEREAS, on January 19, 2023, the Agreement was amended to revise certain terms in connection with Executive’s Change in Control benefits (the “First Amendment”); and

WHEREAS, Executive, the Bank and Bancorp have agreed to amend the Agreement by this Second Amendment to provide for certain revised terms regarding his additional role and responsibilities.

NOW, THEREFORE, for good and valuable consideration the receipt and sufficiency of which are hereby acknowledged, the Bank and Bancorp and the Executive hereto agree as follows:

1.Paragraph 1 of the Agreement is amended and restated in its entirety to read as follows:

1.Position

Executive shall be the Bank’s and Bancorp’s Executive Vice President, Chief Financial Officer (“CFO”) and Chief Operations Officer (“COO”). In those roles, he shall have the duties set forth in this Agreement and in the By-Laws of the Bank and Bancorp, subject to the direction of the Chief Executive Officer (“CEO”) or the Board of Directors of the Bank or Bancorp, as applicable. In addition to such other duties as may be assigned to him, Executive shall be a member of the Executive Officers’ Committee and shall perform such duties as are customarily performed by the CFO and the COO of a bank holding company and commercial bank.

2. The first sentence of Paragraph 8(a) of the Agreement is amended to read as follows:

Effective April 17, 2026, the Bank or Bancorp shall pay Executive an annual minimum base salary (“Base Salary”) of four hundred sixty-six thousand dollars ($466,000.00), less appropriate withholding, taxes and similar deductions, payable in equal installments on those days when the Bank normally pays its employees.

3. Capitalized terms used herein and not otherwise defined shall have the same meaning as set forth in the Agreement.

4. This Second Amendment may be entered into in one or more counterparts, all of which shall be considered one and the same instrument, and it shall become effective when one or more counterparts have been signed by each of the parties and delivered to the other parties, it being understood that all parties need not sign the same counterpart.

5. Except as expressly modified herein, the terms of the Agreement, as amended by the First Amendment, remain unchanged and in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Second Amendment as of the day and year first above written.

EXECUTIVE

/s/ Christopher G. Treece

Christopher G. Treece

SIERRA BANCORP

A California corporation

By: /s/ Kevin J. McPhaill

Name:Kevin J. McPhaill

Title:President & CEO

BANK OF THE SIERRA

A California banking corporation

By: /s/ Kevin J. McPhaill

Name:Kevin J. McPhaill

Title:President & CEO

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 7

v3.26.1

Document and Entity Information

Apr. 20, 2026

Cover [Abstract]

Entity Central Index Key

0001130144

Document Type

8-K

Document Period End Date

Apr. 20, 2026

Entity File Number

000-33063

Entity Registrant Name

SIERRA BANCORP

Entity Incorporation, State or Country Code

Entity Tax Identification Number

33-0937517

Entity Address, Address Line One

86 North Main Street

Entity Address, City or Town

Porterville

Entity Address, State or Province

Entity Address, Postal Zip Code

93257

City Area Code

559

Local Phone Number

782-4900

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Title of 12(b) Security

Common Stock, no par value

Trading Symbol

BSRR

Security Exchange Name

NASDAQ

Entity Emerging Growth Company

false

Amendment Flag

false

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Cover page.

+ References

No definition available.

+ Details

Name:

dei_CoverAbstract

Namespace Prefix:

dei_

Data Type:

xbrli:stringItemType

Balance Type:

Period Type:

duration

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

Period Type:

duration

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

Period Type:

duration

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

Period Type:

duration

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

Period Type:

duration

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

Period Type:

duration

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

Period Type:

duration

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

Period Type:

duration

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration