Second Loan Modification and Extension Agreement, by and among KBSIII 60 South Street, LLC, KBSIII Preston Commons, LLC, KBSIII Sterling Plaza, LLC, KBSIII Towers at Emeryville, LLC, KBSIII Ten Almaden, LLC, KBSIII Legacy Town Center, LLC, KBS REIT Properties III, LLC and Bank of America, N.A., made effective as of November 17, 2023

THIS SECOND LOAN MODIFICATION AND EXTENSION AGREEMENT (this “Agreement”) is made effective as of November 17, 2023 (the “Effective Date”), by and among KBSIII 60 SOUTH SIXTH STREET, LLC, a Delaware limited liability company (“RBC Plaza Borrower”), KBSIII PRESTON COMMONS, LLC, a Delaware limited liability company (“Preston Commons Borrower”), KBSIII STERLING PLAZA, LLC, a Delaware limited liability company (“Sterling Plaza Borrower”), KBSIII TOWERS AT EMERYVILLE, LLC, a Delaware limited liability company (“Towers at Emeryville Borrower”), KBSIII TEN ALMADEN, LLC, a Delaware limited liability company (“Ten Almaden Borrower”), and KBSIII LEGACY TOWN CENTER, LLC, a Delaware limited liability company (“Legacy Town Center Borrower”; RBC Plaza Borrower, Preston Common Borrower, Sterling Plaza Borrower, Towers at Emeryville Borrower, Ten Almaden Borrower, and Legacy Town Center Borrower shall be hereinafter referred to, individually, as a “Borrower” and, collectively, jointly and severally, as “Borrowers”), KBS REIT PROPERTIES III, LLC, a Delaware limited liability company (the “Guarantor”), and BANK OF AMERICA, N.A., a national banking association, as Administrative Agent for the Lenders (as hereinafter defined) (the “Administrative Agent”), and each “Lender” set forth on the signature pages to this Agreement.

WHEREAS, pursuant to the terms and conditions of that certain Amended and Restated Loan Agreement dated as of November 3, 2021, as amended by that certain Loan Modification and Extension Agreement dated as of November 8, 2023 and made effective as of November 3, 2023 (as amended, modified, supplemented or restated from time to time, the “Loan Agreement), by and among Administrative Agent, each of the lenders from time to time party thereto (each, a “Lender” and collectively, “Lenders”), and Borrowers, Lenders made a loan (the “Loan”) to Borrowers in the original maximum principal amount of $613,200,000;

WHEREAS, the Loan is evidenced by, among other things, one or more promissory notes executed by Borrowers and payable to the order of each Lender in the amount of each Lender’s Commitment and collectively in the maximum principal amount of the Loan (such promissory notes, as increased, extended, consolidated, amended, restated, replaced, substituted, supplemented or otherwise modified from time to time, collectively, the “Note”);

WHEREAS, pursuant to the terms of the Loan Agreement, the Loan matures on November 17, 2023;

WHEREAS, Borrowers’ obligations under the Loan Agreement, the Note and the other Loan Documents (as hereinafter defined) are secured by, among other things, the Security Instruments covering certain real property and improvements thereon, more particularly described in the Security Instruments (collectively, the “Property”);

WHEREAS, Borrowers’ obligations under the Loan Agreement, the Note and the other Loan Documents are guaranteed by Guarantor pursuant to an Amended and Restated Guaranty Agreement dated November 3, 2021 (as amended, supplemented, modified, restated or renewed from time to time, the “Guaranty”); and

WHEREAS, Borrowers’ obligations under the Loan Agreement, the Note and the other Loan Documents are hereinafter collectively called the “Obligations;” the Note, the Security Instruments, the Loan Agreement, the Guaranty, and all other documents previously, now or hereafter executed and delivered to evidence, secure, guarantee, or in connection with, the Obligations, as the same may from time

to time be renewed, extended, amended, supplemented or restated, are hereinafter collectively called the “Loan Documents;” and all liens, security interests, assignments, superior titles, rights, remedies, powers, equities and priorities securing the Note or providing recourse to Administrative Agent and/or Lenders with respect thereto are hereinafter collectively called the “Liens.”

NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Borrowers, Administrative Agent and Lenders now agree to extend the maturity date of the Loan, and to make certain other modifications to the Loan Documents, all as more specifically set forth below.

1.Recitals. The parties hereto acknowledge and agree that the recitals set forth above are true and correct and are incorporated herein by this reference; provided, however, that such recitals shall not be deemed to modify the express provisions hereinafter set forth. Capitalized terms used herein but not defined shall have the meanings given to them in the Loan Agreement.

2.Maturity Date. All of the Obligations, including (without limitation) all outstanding principal, accrued and unpaid interest, outstanding late charges, unpaid fees, and all other amounts outstanding under the Note and the other Loan Documents, shall be due and payable in full on December 22, 2023 (the “Maturity Date”). Any reference to “Maturity Date” in the Loan Agreement and other Loan Documents shall be deemed to mean December 22, 2023. The Borrower has no option to extend the Maturity Date.

3.No Releases or Reconveyances of Properties. Notwithstanding anything to the contrary in the Loan Documents, no release or reconveyance of any Property pursuant to Section 9.31 of the Loan Agreement shall be permitted on or prior to the Maturity Date.

4.Conditions Precedent to Closing. The obligation of Administrative Agent and Lenders to enter into this Agreement is subject to the satisfaction of the following conditions precedent:

(a)Administrative Agent’s receipt of this Agreement and all other additional documents required by Administrative Agent in connection with the modification of the Loan duly executed by Borrowers and Guarantor as applicable; and

(b)Borrowers shall have paid Administrative Agent all fees, commissions, costs, charges, taxes and other expenses incurred by Administrative Agent and its counsel in connection with this Agreement, including, but not limited to, reasonable fees and expenses of Administrative Agent’s counsel and all recording fees, taxes and charges.

5.Balance. As of November 10, 2023, the aggregate outstanding principal balance of the Note is $606,288,000.

6.Borrowers’ Representations and Warranties. Each Borrower hereby reaffirms all of the representations and warranties set forth in the Loan Documents to be true, accurate and correct in all material respects as of the date of this Agreement to the extent such representations and warranties are not matters which, by their nature, can no longer be true and correct as a result of the passage of time, and except for changes in circumstances arising from actions or events occurring after the date of the Loan Agreement that do not otherwise constitute a Default thereunder, including, without limitation, the execution of new Leases or new contracts that are not prohibited by the terms of the Loan Agreement or any other Loan Document. Each Borrower further represents and warrants that as of the Effective Date (a) the information included in the Beneficial Ownership Certification, if applicable, is true and correct in all respects; (b) to each Borrower’s knowledge, no Default or Potential Default has occurred and is

continuing; (c) each Borrower is a limited liability company which is duly organized and validly existing under the laws of the State of Delaware; (d) there have been no material changes in formation documents of any Borrower since the inception of the Loan; (e) the execution and delivery of this Agreement do not contravene, result in a breach of, or constitute a default under, any mortgage, loan agreement, indenture or other contract or agreement to which any Borrower is a party or by which any Borrower or any of its properties may be bound (nor would such execution and delivery constitute such a default with the passage of time or the giving of notice or both), and do not violate or contravene any law, order, decree, rule, regulation or restriction to which any Borrower or any Property is subject; (f) this Agreement constitutes the legal, valid and binding obligations of each Borrower enforceable in accordance with its terms; (g) the execution and delivery of, and performance under, this Agreement are within each Borrower’s power and authority without the joinder or consent of any other party and have been duly authorized by all requisite action, and are not in contravention of any law, or of any Borrower’s articles of organization or operating agreement or of any indenture, agreement or undertaking to which any Borrower is a party or by which it is bound.

7.Release.

(a)Borrowers and Guarantor, for themselves and for each of their respective heirs, personal representatives, successors and assigns, hereby release and waive all claims and/or defenses they now may have against Administrative Agent, Lenders and their respective successors and assigns (collectively, the “Released Parties”) on account of any occurrence relating to the Loan, the Loan Documents and/or the property encumbered by the Security Instruments which accrued prior to the date hereof, including, but not limited to, any claim that Administrative Agent or any Lender (a) breached any obligation to Borrowers and/or Guarantor in connection with the Loan, (b) was or is in any way involved with Borrowers and/or Guarantor as a partner, joint venturer, or in any other capacity whatsoever other than as a lender, (c) failed to fund any portion of the Loan or any other sums as required under any document or agreement in reference thereto, or (d) failed to timely respond to any offers to cure any defaults under any document or agreement executed by Borrowers, Guarantor or any third party or parties in favor of Administrative Agent or any Lender (collectively, the “Released Claims”). This release and waiver shall be effective as of the date of this Agreement and shall be binding upon Borrowers and Guarantor and each of their respective heirs, personal representatives, successors and assigns, and shall inure to the benefit of Administrative Agent, Lenders and their respective successors and assigns. The term “Released Parties” as used herein shall include, but shall not be limited to, the present and former officers, directors, employees, agents and attorneys of Administrative Agent and each Lender.

(b)Borrowers and Guarantor each agree and acknowledge that it may hereafter discover facts different from or in addition to those now known or believed to be true regarding the Released Claims and agree that the foregoing releases shall remain in full force and effect, notwithstanding the existence or nature of any such different or additional facts.

(c)Borrowers and Guarantor, each having consulted with counsel, is aware of the contents of Section 1542 of the Civil Code of the State of California. Section 1542 reads as follows:

Borrowers and Guarantor each expressly waive and relinquish all rights and benefits under that section and any law or legal principle of similar effect in any jurisdiction, with respect to the Released

Claims. Borrowers and Guarantor have executed this Agreement voluntarily, with full knowledge of its significance, and with the express intention of effecting the legal consequences provided by a waiver of California Civil Code Section 1542.

8.Course of Dealing. Administrative Agent, Lenders and Borrowers hereby acknowledge and agree that at no time shall any prior or subsequent course of conduct by Borrowers, Administrative Agent or any Lender directly or indirectly limit, impair or otherwise adversely affect any of Administrative Agent’s or any Lender’s rights, interests or remedies in connection with the Loan and the Loan Documents or obligate Administrative Agent or any Lender to agree to, or to negotiate or consider an agreement to, any waiver of any obligation or default by Borrowers under any Loan Document or any amendment to any term or condition of any Loan Document.

9.Renewal; Lien Continuation; No Novation. Borrowers hereby renew the Obligations and promises to pay and perform all Obligations as modified by this Agreement. The Liens are hereby ratified and confirmed as valid, subsisting and continuing to secure the Obligations, as modified hereby. Nothing herein shall in any manner diminish, impair, waive or extinguish the Note, the Obligations or the Liens. The execution and delivery of this Agreement shall not constitute a novation of the debt evidenced and secured by the Loan Documents.

10.Default. A default under this Agreement shall constitute a default under the Note and other Loan Documents, subject to any applicable notice and cure or grace period expressly set forth in the Loan Documents.

11.Miscellaneous. To the extent of any conflict between the Loan Documents and this Agreement, this Agreement shall control. Unless specifically modified hereby, all terms of the Loan Documents shall remain in full force and effect. This Agreement (a) shall bind and benefit the parties hereto and their respective heirs, beneficiaries, administrators, executors, receivers, trustees, successors and assigns; (b) shall be governed by the laws of the State of California and United States federal law; and © may be executed in several counterparts, and by the parties hereto on separate counterparts, and each counterpart, when executed and delivered, shall constitute an original agreement enforceable against all who signed it without production of or accounting for any other counterpart, and all separate counterparts shall constitute the same agreement.

12.Reaffirmation of Guaranty. Guarantor, by signature below as such, for valuable consideration, the receipt and adequacy of which are hereby acknowledged, hereby consents to and joins in this Agreement and hereby declares to and agrees with Administrative Agent and Lenders that the Guaranty is and shall continue in full force and effect for the benefit of Administrative Agent and Lenders with respect to the Obligations, as amended by this Agreement, that there are no offsets, claims, counterclaims, cross-claims or defenses of Guarantor with respect to the Guaranty nor, to Guarantor’s knowledge, with respect to the Obligations, that the Guaranty is not released, diminished or impaired in any way by this Agreement or the transactions contemplated hereby, and that the Guaranty is hereby ratified and confirmed in all respects. Guarantor hereby reaffirms all of the representations and warranties set forth in the Guaranty, except to the extent such representations and warranties are matters which, by their nature, can no longer be true and correct as a result of the passage of time, and except for changes in circumstances arising from actions or events occurring after the date of the Guaranty that do not otherwise constitute a Default thereunder. Guarantor acknowledges that without this consent and reaffirmation, Administrative Agent and Lenders would not execute this Agreement or otherwise consent to its terms.

13.Electronic Signatures. This Agreement may be in the form of an Electronic Record and may be executed using Electronic Signatures (including, without limitation, facsimile and .pdf) and shall be considered an original, and shall have the same legal effect, validity and enforceability as a paper record.

For purposes hereof, “Electronic Record” and “Electronic Signature” shall have the meanings assigned to them, respectively, by 15 USC §7006, as it may be amended from time to time. Borrowers and Guarantor hereby agree that as soon as reasonably possible, Borrowers and Guarantor will provide an original of this Agreement to Administrative Agent that will include the wet signatures of Borrowers and Guarantor next to any Electronic Signatures.

13.Limited Recourse Provision. Neither Administrative Agent nor any Lender shall have any recourse against, nor shall there be any personal liability to, the members, shareholders, partners, beneficial interest holders or any other entity or person in the ownership (directly or indirectly) of any Borrower with respect to the obligations of any Borrower and Guarantor under the Loan. For purposes of clarification, in no event shall the above language limit, reduce or otherwise affect any Borrower’s liability or obligations under the Loan Documents, Guarantor’s liability or obligations under the Guaranty, or Administrative Agent’s and each Lender’s right to exercise any rights or remedies against any collateral securing the Loan.

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