Material Event (Form 8-K)

Item 8.01 Other Events

On October 10, 2025, Argent Trust Company (the "Trustee"), as trustee of the Permian Basin Royalty Trust (the "Trust") received a request from SoftVest Advisors, LLC ("SoftVest"), together with other holders of units of beneficial interest ("Units") who collectively with SoftVest own more than 15% of the outstanding Units of the Trust, to call a special meeting ("Special Meeting") of the Trust's Unit holders to be held on December 16, 2025, with a record date of November 11, 2025. The purpose of the Special Meeting requested by the Unit holders is to present for a vote by the Trust's Unit holders a proposal in support of SoftVest or another appropriate party taking appropriate actions to effect the judicial reformation of the Trust's Indenture to provide that the affirmative vote of a majority of Units cast at a special meeting (at which a quorum is present) be sufficient to approve any amendment to the Trust Indenture. In accordance with the terms of the Trust's Indenture, the Trustee intends to call the Special Meeting. Additional details regarding the Special Meeting will be set forth in the Trustee's notice of special meeting to be mailed to Unit holders at a later date and are also expected to be set forth in a proxy statement to be filed by SoftVest with respect to the Special Meeting.

IMPORTANT ADDITIONAL INFORMATION AND WHERE TO FIND IT

This current report on Form 8-K is not a proxy solicitation. None of the Trust, theTrustee, or its officers or directors, are soliciting proxies in connection with the Special Meeting and are not participants in any solicitation of proxies by SoftVest and/or other Unit holders in connection with the Special Meeting. The Trustee and the Trust are making this communication for informational purposes only and do not intend to file a proxy statement with respect to the Special Meeting.

The Trustee anticipates that SoftVest and/or other Unit holders will file a proxy statement with the Securities and Exchange Commission in connection with the Special Meeting. Unit holders are strongly encouraged to read the proxy statement when it becomes available because it will contain important information. Unit holders may obtain a free copy of the proxy statement, any amendments and documents that SoftVest and/or any other Unit holders or the Trust files with the SEC from the SEC's website at www.sec.gov.