Exhibit 10.3

PREMIERWEST BANK
SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN AGREEMENT 
(SERP)

THIS SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN AGREEMENT (this “Agreement”) is made December 13, 2007, by and between PremierWest Bancorp, an Oregon corporation (“Bancorp”), PremierWest Bank, an
Oregon-chartered, FDIC-insured bank with its main office in Medford, Oregon (the “Bank”) (collectively “PremierWest”), and John Anhorn, (the “Executive”), replacing the Agreement dated July 29, 2004, and is
effectively retroactive to January 1, 2005.

WHEREAS,the Executive has contributed substantially to the success of the Bank and its parent corporation, Bancorp, and the Bank desires that the Executive continue in
its employ;

WHEREAS, to encourage the Executive to remain an employee of the Bank, the Bank is willing to provide supplemental retirement benefits to the Executive, payable out of the Bank’s general assets;

WHEREAS, none of the conditions or events included in the definition of the term “golden parachute payment” contained in Section 18(k)(4)(A)(ii) of the Federal Deposit Insurance Act [12 U.S.C. 1828(k)(4)(A)(ii)] and
in Federal Deposit Insurance Corporation Rule 359.1(f)(1)(ii) [12 CFR 359.1(f)(1)(ii)] exists or, to the best knowledge of the Bank, is contemplated insofar as the Bank is concerned;

WHEREAS, this Agreement constitutes a plan of deferred compensation;

WHEREAS, this Agreement is intended to comply with § 409A of the Internal Revenue Code of 1986, as amended (the “Code”) and any ambiguity hereunder shall be interpreted in such a way as to comply, to the extent
necessary, with Code § 409A and the regulations thereunder; and

NOW THEREFORE, in consideration of the foregoing premises and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:



|ARTICLE 1DEFINITIONS
|--------------------

Whenever used in this Agreement, the following terms shall have the meanings specified:

1.1“Adjusted Base Salary”means the highest amount of Base Salary paid to the Executive during employment with the Bank.

- 1 -

---

1.2“Base Salary”means the annual base compensation, not including any bonuses or benefits, paid to the Executive.

1.3“Cause”for an Executive’s termination for Cause will exist upon the occurrence of one or more of the following events:

(a)Fraudulent Conduct.An intentional act of fraud, embezzlement, or theft by Executive in the course of his employment with PremierWest Bancorp or the Bank. No act or
failure to act on Executive’s part shall be deemed to have been intentional if it was due primarily to an error in judgment or negligence. An act or failure to act on Executive’s part shall be considered intentional if it is not in good
faith and it is without a reasonable belief that the action or failure to act is in PremierWest’s best interests,

(b)Material Breach of Employment Agreement.A material breach by Executive of his Employment Agreement if such breach is not remedied or is not being remedied to the
Board or the Bank Board’s satisfaction within 30 days after written notice, including a detailed description of the breach, has been delivered by the respective board to Executive,

(c)Gross Negligence/Insubordiation.Gross negligence or insubordination by Executive in the performance of his duties as an officer of PremierWest Bankcorp or the Bank
if such gross negligence or insubordination is not remedied or is not being remedied to the Board or the Bank Board’s satisfaction within 30 days after written notice, including a detailed description of the gross negligence or
insubordination, has been delievered by the respective board to Executive,

(d)Breach of Fiduciary Duties. A breach by Executive of his fiduciary duties to PremierWest Bancorp and its stockholders or misconduct
involving dishonesty, in either case whether in his capacity as an officer of PremierWest Bancorp or the Bank,

(e)Criminal Conviction. Conviction of Executive for a felony or conviction of a misdemeanor involving moral turpitude,

(f)Violation of Law. Intentional violation of any law or significant policy of PremierWest Bancorp or the Bank committed in connection with
Executive’s employment, which has a material adverse effect on PremierWest Bancorp or the Bank, or

(g)FDIC Removal Order. Removal of Executive from office or permanent prohibition of Executive from participating in the conduct of PremierWest Bank’s affairs by
an order issued under Section 8(e)(4) or (g)(1) of the Federal Deposit Insurance Act, 12 U.S.C. 1818(e)(4) or (g)(1).

1.4“Change in Control”means if any one of the following events occurs:

(a)Merger. Bancorp merges into or consolidates with another corporation, or merges another corporation into Bancorp, and as a result less than 50% of the combined
voting

- 2 -

---

power of the resulting corporation immediately after the merger or consolidation is held by Persons who were the holders of Bancorp’s voting securities immediately before the merger or consolidation,

(b)Acquisition of Significant Share Ownership. (1) A report on Schedule 13D or another form or schedule (other than Schedule 13G) is filed or is required to be filed
under Sections 13(d) or 14(d) of the Securities Exchange Act of 1934, if the schedule discloses that the filing person or persons acting in concert has or have become the beneficial owner of 25% or more of a class of Bancorp’s voting
securities, or (2) a person or persons acting in concert has or have become the beneficial owner of 10% or more of a class of Bancorp’s voting securities and the person or the person’s or group’s nominee becomes the Chairman of the
Board of Bancorp, but this paragraph (b) shall not apply to beneficial ownership of voting shares of Bancorp held in a fiduciary capacity by an entity in which Bancorp directly or indirectly beneficially owns 50% or more of the outstanding voting
securities,

(c)Change in Board Composition. During any period of two consecutive years, individuals who constitute Bancorp’s Board of Directors at the beginning of the
two-year period cease for any reason to constitute at least a majority thereof; provided, however, that for purposes of this paragraph (c) each director who is first elected by the board (or first nominated by the board for election by stockholders)
by a vote of at least two-thirds (2/3) of the directors who were directors at the beginning of the period shall be deemed to have been a director at the beginning of the two-year period, or

(d)Sale of Assets. Bancorp sells to a third party all or substantially all of Bancorp’s assets. For this purposes, sale of all or substantially all of
Bancorp’s assets includes sale of the shares or assets of the Bank.

1.5“Disability”means the Executive (i) is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental
impairment which can be expected to result in death or can be expected to last for a continuous period of not less than 12 months, or (ii) is, by reason of any medically determinable physical or mental impairment which can be expected to result in
death or can be expected to last for a continuous period of not less than 12 months, receiving income replacement benefits for a period of not less than 3 months under an accident and health plan covering employees of the Bank. The Executive must
submit proof to the Bank of the carrier’s or Social Security Administration’s determination upon the request of the Bank.

1.6“Disability Retirement”means termination of the Executive’s employment due to Disability.

1.7“Early Retirement”means the Executive’s Termination of Employment with the Bank before Normal Retirement Age for reasons other than death,
Disability, Termination under Article 5 of this Agreement, termination without Cause or termination with Good Reason, and any termination other than termination for Cause more than six (6) months after a Change in Control.

- 3 -

---

1.8“Early Retirement Date”means the month, day and year in which Early Retirement occurs.

1.9“Effective Date”means the date indicated in the first paragraph hereof.

1.10“Good Reason”for Executive’s Termination of Employment by resignation will exist upon the occurrence, without Executive’s consent, of one or
more of the following events, if Executive has informed PremierWest in writing of the circumstances described below in this Section that could give rise to Termination of Employment for Good Reason and PremierWest has not removed the circumstances
within 30 days of the written notice:

(a)Reduction in Base Salary. A reduction of Executive’s Base Salary,

(b)Reduced Participation in Bonus, Incentive, Compensation, and Other Plans. A reduction of Executive’s bonus, incentive, and other compensation award
opportunities under PremierWest Bancorp’s benefit plans and the Bank’s benefit plans, unless in the case of either, a company-wide reduction of all officers’ award opportunities occurs simultaneously,

(c)Participation in Benefit Plans. Discontinuance of Executive’s participation in any officer or employee benefit plan maintained by PremierWest Bancorp or by the
Bank, unless the plan is discontinued by reason of law or loss of tax deductibility to PremierWest with respect to contributions to the plan, or is discontinued as a matter of PremierWest Bancorp policy or PremierWest Bank policy applied equally to
all participants in the plan,

(d)A Reduction in Responsibilities or Status(other than such changes, made after the Executive has announced his intention to retire or within twelve months of his
Normal Retirement Date, as are consistent with his anticipated retirement) based on one of the following:

(1) Assignment to Executive of duties or responsibilities that are materially inconsistent with Executive’s position as stated in Executive’s Employment Agreement or that represent a material reduction of his
authority,

(2) Any other action by PremierWest that results in a material reduction or material adverse change in Executive’s position, authority, duties or responsibilities,

(3) Failure to appoint or reappoint Executive to the position stated in his Employment Agreement, or

(4) Following a Change in Control, failure to retain Executive in an executive officer position with authority, duties or responsibilities consistent with that of an executive officer.

(Subsections (d)(1), (2) and (3) do not apply following a Change in Control),

- 4 -

---

(e)Failure to Obtain Assumption Agreement. The failure of a successor or assign of the Bank to assume and agree to perform this Agreement and the Executive’s
Employment Agreement, if assignment and assumption does not occur automatically under operation of law,

(f)Termination without Compliance with this Agreement. Termination by PremierWest of Executive’s employment without the notice required under Executive’s
Employment Agreement,

(g)Material Breach. A material breach of Executive’s Employment Agreement by PremierWest that is not corrected within a reasonable
time, or

(h)Relocation of Executive. Requiring Executive to change his principal work location, to any location that is more than 15 miles from the location of PremierWest
Bancorp’s principal executive offices on the date of this Agreement.

1.11“Normal Retirement Date”means the Executive’s 65thbirthday.

1.12“Person”means an individual, corporation, partnership, trust, association, joint venture, pool, syndicate, sole proprietorship, unincorporated
organization or other entity.

1.13“Plan Year”means a twelve-month period commencing on January 1, and ending on the last day of December of each year. The initial Plan Year shall
commence on the Effective Date of this Agreement.

1.14“Termination of Employment”with the Bank means a separation from service under Code § 409A and the regulations thereunder, as such regulations may
change from time to time, or any successor provision of the Code and regulations. For purposes of this Agreement, if there is a dispute over the employment status of the Executive or the date of termination of the Executive’s employment, the
Bank shall have the sole and absolute right to decide the dispute, unless a Change in Control shall have occurred.



|ARTICLE 2LIFETIME BENEFITS
|--------------------------

2.1Normal Retirement Benefit. The Bank shall pay to the Executive the sum of $133,094 per year payable in monthly installments commencing August 1, 2008 and continuing
for the life of the Executive. Payment of the Normal Retirement Benefit shall not be contingent on Termination of Employment. The monthly payments made hereunder shall be considered a series of separate payments for purposes of Code §
409A.

2.2Early Retirement Benefit. This section is no longer applicable.

2.3Premature Termination Benefit. This section is no longer applicable.

- 5 -

---

2.4Disability Retirement Benefit. Upon the Executive’s Disability Retirement, the Bank shall pay to the Executive the benefit
described in this Section 2.4 instead of any other benefit under this Agreement.

2.4.1Amount of Benefit. The annual benefit under this Section 2.4 is the amount in Section 2.1.

2.4.2Payment of Benefit. The payment of benefits under this Section 2.4 shall begin on the first day of the month following the month in which Disability Retirement
occurs. The Bank shall pay the annual benefit to the Executive in 12 equal monthly installments on the first day of each month for the life of the Executive. The monthly payments made hereunder shall be considered a series of separate payments for
purposes of Code § 409A

2.5Change in Control Retention Benefit. This section is no longer applicable.



|ARTICLE 3DEATH BENEFITS
|-----------------------

3.1Death During Active Service. Except as provided in Section 5.1, if the Executive dies in active service to the Bank before the date
specified in Section 2.1, the Executive’s designated beneficiary is entitled to receive the benefit in this Section 3.1 instead of any other benefit under this Agreement.

3.1.1Amount of Benefit. The annual benefit under this Section 3.1 is the amount in Section 2.1.

3.1.2Payment of Benefit. Beginning with the month after the Executive’s death, the Bank shall pay the annual benefit to the Executive’s designated
beneficiary in 12 monthly installments on the first day of each month. The annual benefit shall be paid to the Executive’s designated beneficiary for 15 years.

3.2Death During Benefit Period. If the Executive dies after benefit payments under Article 2 have commenced, and if benefit payments have been paid to Executive for less
than 15 years, the Bank shall pay to the Executive’s beneficiary(ies) at the same time and in the same amounts the benefits that would have been paid to Executive, had the Executive survived, but the total period of payments to the Executive
and the Executive’s beneficiary(ies) shall not exceed 15 years.

3.3Death After Termination of Employment But Before Benefit Payments Commence. If the Executive is entitled to benefit payments under Article 2, but dies before payments
commence, the benefits shall be payable to the Executive’s beneficiary(ies), but the payments shall commence on the first day of the month after the date of the Executive’s death, and payments shall be paid to the beneficiary(ies) for 15
years. Annual payments shall be in the same amounts they would have been paid to the Executive had the Executive survived.

- 6 -

---



|ARTICLE 4BENEFICIARIES
|----------------------

4.1Beneficiary Designations. The Executive shall designate a beneficiary or beneficiaries by filing a written designation with the Bank. The Executive may revoke or
modify the designation at any time by filing a new designation. However, designations will be effective only if signed by the Executive and accepted by the Bank during the Executive’s lifetime. The Executive’s beneficiary designation
shall be deemed automatically revoked if the beneficiary predeceases the Executive, or if the Executive names a spouse as beneficiary and the marriage is subsequently dissolved. If the Executive dies without a valid beneficiary designation, all
payments shall be made to the Executive’s estate.

4.2Facility of Payment. If a benefit is payable to a minor, to a person declared incapacitated, or to a person incapable of handling the disposition of his or her
property, the Bank may pay such benefit to the guardian, legal representative or person having the care or custody of such minor, incapacitated person or incapable person. The Bank may require such proof of incapacity, minority or guardianship as
the Bank deems appropriate before distribution of the benefit. Distribution shall completely discharge the Bank from all liability for such benefit.



|ARTICLE 5GENERAL LIMITATIONS
|----------------------------

5.1Suicide or Misstatement. The Bank shall not pay any benefit under this Agreement if the Executive commits suicide before August 1, 2008. Additionally, the Bank shall
not pay any benefit under this Agreement if the Executive has made any material misstatement of fact on any application or resume provided to the Bank, or on any application for any benefits provided by the Bank to the Executive.

5.2Removal.If the Executive is removed from office or permanently prohibited from participating in the conduct of the Bank’s affairs by an order issued under
Section 8(e)(4) or (g)(1) of the Federal Deposit Insurance Act, 12 U.S.C. 1818(e)(4) or (g)(1), all obligations of the Bank under this Agreement shall terminate as of the effective date of the order.

5.3Insolvency.If the Commissioner of the Oregon Department of Banking appoints the Federal Deposit Insurance Corporation as receiver for the Bank under Oregon Revised
Statutes Section 711.405, all obligations under this Agreement shall terminate as of the date of the Bank’s declared insolvency.



|ARTICLE 6CLAIMS AND REVIEW PROCEDURES
|-------------------------------------

6.1Claims Procedure. If the Executive or his beneficiary (“claimant”) has not received benefits under the Agreement that he or she believes should be paid
shall make a claim for such benefits as follows:

- 7 -

---

6.1.1Initiation – Written Claim.The claimant initiates a claim by submitting to the Bank a written claim for the benefits.

6.1.2Timing of Bank Response. The Bank shall respond to such claimant within 90 days after receiving the claim. If the Bank determines that special circumstances
require additional time for processing the claim, the Bank can extend the response period by an additional 90 days by notifying the claimant in writing, prior to the end of the initial 90-day period, that an additional period is required. The notice
of extension must set forth the special circumstances and the date by which the Bank expects to render its decision.

6.1.3Notice of Decision. If the Bank denies part or all of the claim, the Bank shall notify the claimant in writing of such denial. The Bank shall write the
notification in a manner calculated to be understood by the claimant. The notification shall set forth:

6.1.3.1 the specific reasons for the denial,

6.1.3.2 a reference to the specific provisions of the Agreement on which the denial is based,

6.1.3.3 a description of any additional information or material necessary for the claimant to perfect the claim and an explanation of why it is needed,

6.1.3.4 an explanation of the Agreement’s review procedures and the time limits applicable to such procedures, and

6.1.3.5 a statement of the claimant’s right to bring a civil action under ERISA (Employees Retirement Income Security Act) Section 502(a) following an adverse benefit determination on review.

6.2Review Procedure.If the Bank denies part or all of the claim, the claimant shall have the opportunity for a full and fair review by the
Bank of the denial, as follows:

6.2.1Initiation – Written Request.To initiate the review, the claimant, within 60 days after receiving the Bank’s notice of denial, must file with the Bank
a written request for review.

6.2.2Additional Submissions – Information Access. The claimant shall then have the opportunity to submit written comments, documents, records and other
information relating to the claim. The Bank shall also provide the claimant, upon request and free of charge, reasonable access to, and copies of, all documents, records and other information relevant (as defined in applicable ERISA regulations) to
the claimant’s claim for benefits.

6.2.3Considerations on Review. In considering the review, the Bank shall take into account all materials and information the claimant submits relating to the claim,
without regard to whether such information was submitted or considered in the initial benefit determination.

- 8 -

---

6.2.4Timing of Bank Response. The Bank shall respond in writing to such claimant within 60 days after receiving the request for review. If the Bank determines that
special circumstances require additional time for processing the claim, the Bank can extend the response period by an additional 60 days by notifying the claimant in writing, prior to the end of the initial 60-day period, that an additional period
is required. The notice of extension must set forth the special circumstances and the date by which the Bank expects to render its decision.

6.2.5Notice of Decision.The Bank shall notify the claimant in writing of its decision on review. The Bank shall write the notification in a manner calculated to be
understood by the claimant. The notification shall set forth:

6.2.5.1 the specific reasons for the denial,

6.2.5.2 a reference to the specific provisions of the Agreement on which the denial is based,

6.2.5.3 a statement that the claimant is entitled to receive, upon request and free of charge, reasonable access to, and copies of, all documents, records and other information relevant (as defined in applicable ERISA
regulations) to the claimant’s claim for benefits, and

6.2.5.4 a statement of the claimant’s right to bring a civil action under ERISA Section 502(a).



|ARTICLE 7MISCELLANEOUS
|----------------------

7.1Amendments and Termination. This Agreement may be amended or terminated only by a written agreement signed by the Bank and the Executive.

7.2Binding Effect.This Agreement shall bind the Executive and the Bank, and their beneficiaries, survivors, executors, successors, administrators and transferees.

7.3No Guarantee of Employment. This Agreement is not an employment policy or contract. It does not give the Executive the right to remain an employee of the Bank, nor
does it interfere with the Bank’s right to discharge the Executive. It also does not require the Executive to remain an employee nor interfere with the Executive’s right to terminate employment at any time.

7.4Non-Transferability. Benefits under this Agreement cannot be sold, transferred, assigned, pledged, attached, or encumbered in any manner.

7.5Successors; Binding Agreement. If any successor (whether direct or indirect, by purchase, merger, consolidation or otherwise) to all or substantially all of the
business or assets of the Bank does not assume this Agreement by operation of law, the Bank shall require such

- 9 -

---

successor to expressly assume and agree to perform this Agreement in the same manner and to the same extent that the Bank would be required to perform this Agreement if no such succession had occurred. The Bank’s failure to
obtain an assumption agreement, if necessary, before the succession becomes effective shall be considered a breach of this Agreement and shall entitle the Employee to the right to payments specified in Section 2.5. This Agreement shall not be
terminated by the voluntary or involuntary dissolution of the Bank, by any merger, consolidation or acquisition where the Bank is not the surviving corporation, by any transfer of all or substantially all of the Bank’s assets, or by any other
change in the Bank’s structure or the manner in which the Bank’s business or assets are held. The Executive shall not be deemed to have had a Termination of Employment upon the occurrence of one of the foregoing events.

7.6Tax Withholding. The Bank shall withhold any taxes that are required to be withheld from the benefits provided under this Agreement.

7.7Applicable Law. Except to the extent preempted by the laws of the United States of America, the validity, interpretation, construction, and performance of this
Agreement shall be governed by and construed in accordance with the laws of the State of Oregon, without giving effect to the principles of conflict of laws of such state.

7.8Unfunded Arrangement. The Executive and the Executive’s beneficiary(ies) are general unsecured creditors of the Bank for the payment of benefits under this
Agreement. The benefits represent the mere promise by the Bank to pay such benefits. The rights to benefits are not subject in any manner to anticipation, alienation, sale, transfer, assignment, pledge, encumbrance, attachment, or garnishment by
creditors. Any insurance on the Executive’s life is a general asset of the Bank to which the Executive and beneficiary(ies) have no preferred or secured claim.

7.9Administration. The Bank shall have the powers that are necessary to administer this Agreement, including but not limited to the power to:

(a) interpret the provisions of the Agreement,

(b) establish and revise the method of accounting for the Agreement,

(c) maintain a record of benefit payments, and

(d) establish rules and prescribe forms necessary or desirable to administer the Agreement.

7.10Named Fiduciary. The Bank shall be the named fiduciary and plan administrator under this Agreement. The named fiduciary may delegate to others certain aspects of the
management and operation responsibilities of the plan, including the employment of advisors and the delegation of ministerial duties to qualified individuals.

7.11Severability. If for any reason any provision of this Agreement is held invalid, such invalidity shall not affect any other provision of this Agreement, and each
such other

- 10 -

---

provision shall continue in full force and effect to the full extent consistent with the law. If any provision of this Agreement is held invalid in part, such invalidity shall in no way affect the remainder of the provision, and
the remainder of such provision, together with all other provisions of this Agreement shall continue in full force and effect to the full extent consistent with the law.

7.12Headings. The headings of sections herein are included solely for convenience of reference and shall not affect the meaning or interpretation of any provision of
this Agreement.

7.13Notices. All notices, requests, demands and other communications hereunder shall be in writing and shall be deemed to have been duly given if delivered by hand or
mailed, certified or registered mail, return receipt requested, with postage prepaid. If the communication is to the Bank, it should be directed to the Bank’s Chief Executive Officer and addressed to the Bank’s corporate office. If the
communication is to the Executive, it should be addressed to the most recent address provided by the Executive to the Bank.

7.14IRC §1035 Exchanges. The Executive recognizes and agrees that after this Agreement is adopted, the Bank may wish to exchange the policy of life insurance on the
Executive’s life, to be used to fund the benefit under Article 2 of this Agreement for another contract of life insurance insuring the Executive’s life. Provided that the policy is replaced (or intended to be replaced) with a comparable
policy of life insurance, the Executive agrees to provide medical information and cooperate with medical insurance-related testing required by a prospective insurer for implementing the policy or, if necessary, for modifying or updating to a
comparable insurer.

7.15Entire Agreement. This Agreement constitutes the entire agreement between the Bank and the Executive concerning the subject matter hereof. No rights are granted to
the Executive under this Agreement other than those specifically set forth herein.

- 11 -

---

IN WITNESS WHEREOF, the Executive and a duly authorized Bank officer have signed this Agreement the day and year first written above.

|THE EXECUTIVE | THE BANK:
		
		PREMIERWEST BANK          
|------------- | -----------------------------------------
|John Anhorn   | By:  Its:                                
|              |                                          
|              | BANCORP: 
PREMIERWEST BANCORP
		By:  Its:
|              |                                          

Agreement to Cooperate with Insurance Underwriting Incident to I.R.C. §1035 Exchange

I acknowledge that I have read this Agreement and agree to be bound by its terms, particularly the covenant on my part set forth in Section 7.14 to provide medical information and cooperate with medical insurance-related testing
required by an insurer to issue a comparable insurance policy to cover the benefit provided under Article 3 of this Agreement.

|Witness | Executive
|------- | ---------

- 12 -

---