SELECT MEDICAL HOLDINGS CORP

Item 5.07 Submission of Matters to a Vote of Security Holders Select Medical Holdings Corporation (the “Company” or “Select Medical”) held a special meeting of its common stockholders (the “Special Meeting”) on June 26, 2026. A brief description of the matters voted upon at the Special Meeting and the results of the voting on such matters is set forth below. At the Special Meeting, there were present, online or represented by proxy, 102,299,245 shares of the Company’s common stock (the “Company Shares”), representing 82.54% of the 123,942,955 Company Shares outstanding and eligible to vote. This constituted a quorum for all matters to be presented at the Special Meeting. The record date for the Special Meeting was May 11, 2026. Following the approval of the Merger Proposal (as defined below) at the Special Meeting, the Company, Parent and Merger Sub (each as defined below) anticipate the transactions contemplated by the Merger Agreement (as defined below), including the merger, will close on or about June 30, 2026. The number of votes cast for and against, as well as the number of abstentions, with respect to each proposal presented at the Special Meeting were as follows: Proposal 1: The Merger Proposal The Merger Proposal is a proposal to adopt that certain Agreement and Plan of Merger (the “Merger Agreement”), dated as of March 2, 2026, as may be amended from time to time by and among the Company, Stallion Intermediate Corporation (“Parent”) and Stallion MergerSub Corporation (“Merger Sub”). The Merger Proposal required the affirmative vote of (i) holders of Company Shares representing a majority of the aggregate voting power of the outstanding Company Shares entitled to vote thereon (“Majority Approval”) and (ii) holders of Company Shares representing a majority of the aggregate voting power of the outstanding Company Shares entitled to vote thereon, excluding any Company Shares beneficially owned by Parent, Merger Sub, the Rollover Holders (as defined in the Merger Agreement) and their respective Affiliates, “associates” or members of their respective “immediate family” (as such terms are respectively defined in Rules 12b-2 and 16a-1 of the Exchange Act) (collectively, “Unaffiliated Stockholder Approval”). For: Against: Abstain: ─────────────────────────────────────────────────────────────────────────────────── Majority Approval 99,005,011 1,789,017 1,505,217 Unaffiliated Stockholder Approval 81,819,453 1,789,017 1,505,217 Proposal 2: The Compensation Proposal The Compensation Proposal is a proposal to approve, on a non-binding, advisory basis, certain compensation that will or may become payable by the Company to its named executive officers that is based on or otherwise relates to the merger. The Compensation Proposal required the affirmative vote of a majority of the Company Shares present online or represented by proxy at the Special Meeting and entitled to vote thereon. For: Against: Abstain: ───────────────────────────────────────────── 52,322,733 48,410,193 1,566,319 Proposal 3: The Adjournment Proposal In connection with the Special Meeting, the Company also solicited proxies with respect to the Adjournment Proposal, or a proposal to approve adjournments of the Special Meeting to solicit additional proxies if there are not sufficient votes at the time of the Special Meeting to approve the Merger Proposal. The Adjournment Proposal was rendered moot in light of the approval of the Merger Proposal.

Item 7.01 Regulation FD Disclosure. On June 26, 2026, the Company issued a press release announcing the results of the special meeting. A copy of the press release is furnished as Exhibit 99.1 hereto and is incorporated herein by reference. The information in this Item 7.01 in this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.