STLN: Company disclosure

Item 7.01 Regulation FD Disclosure On August 3, 2026, the Company issued a press release announcing the name change and the symbol change from TOI to STLN. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Item 7.01, including Exhibit 99.1 attached hereto, is being furnished, shall not be deemed “filed” for any purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Securities Exchange Act of 1934, as amended (the “Exchange Act”), except as expressly set forth by specific reference in such a filing. Item 9.01 Financial Statements and Exhibits (d) Exhibits Exhibit No. Description of Exhibit 3.1 Certificate of Amendment to the Third Amended and Restated Certificate of Incorporation dated July 28, 2026 99.1 Press Release dated August 3, 2026 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Dated: August 3, 2026 THE ONCOLOGY INSTITUTE, INC. By: /s/ Minh Merchant Name: Minh Merchant Title: Chief Legal Officer