As previously reported, on November 4, 2025, Sonida Senior Living, Inc. (“SNDA”), and CNL Healthcare Properties, Inc.
(“CHP”), entered into an Agreement and Plan of Merger (as amended from time to time, the “Merger Agreement”), by and among SNDA, CHP, SSL Sparti LLC, a wholly owned subsidiary of SNDA
(“Holdco”), SSL Sparti Property Holdings Inc., a wholly owned subsidiary of Holdco (f/k/a Sparti Merger Sub, Inc., “SNDA Merger Sub”), and CHP Merger Corp., a wholly owned subsidiary of CHP (“CHP Merger
Sub”).
On December 17, 2025, SNDA filed a preliminary joint proxy statement/prospectus with the Securities and Exchange Commission
(“SEC”), a revised version of which was filed with the SEC on January 2, 2026 (as revised, the “Preliminary Proxy Statement”). On January 6, 2026, SNDA filed a definitive joint proxy
statement/prospectus (the “Definitive Proxy Statement”) with the SEC in connection with the special meeting of SNDA stockholders to be held virtually on February 26, 2026 at 10:00 a.m. Eastern Time (the “SNDA Special
Meeting”), which meeting can be accessed by visiting meetnow.global/MNXNNRP. Capitalized terms used below, unless otherwise defined, shall have the meanings ascribed to such terms in the Definitive Proxy
Statement.
Following the filing of the Definitive Proxy Statement, and as of the date of this Current Report on Form
8-K, two lawsuits have been filed by purported stockholders of SNDA against SNDA and members of SNDA’s Board of Directors in the Supreme Court of the State of New York (captioned Williams v. Sonida
Senior Living, Inc., et al., No. 650669/2026, and Ballard v. Sonida Senior Living, Inc., et al., No. 650590/2026) (collectively, the “Actions”). The Actions generally allege, among other things, that the
Definitive Proxy Statement omits material information regarding the proposed transactions contemplated by the Merger Agreement (the “Transactions”) and seek, among other things, an injunction enjoining the SNDA Special Meeting
until such time as the alleged disclosure deficiencies are corrected, rescission of the Transactions or damages in the event the Transactions are consummated, and an award of costs, including reasonable attorneys’ and experts’ fees. SNDA
has also received demand letters from purported stockholders (collectively, the “Shareholder Letters”) alleging, among other things, that the disclosures contained in the Preliminary Proxy Statement and/or the Definitive Proxy
Statement are deficient and demanding that certain corrective disclosures be made. SNDA believes that the allegations in the Shareholder Letters and the Actions are without merit, that each of the Preliminary Proxy Statement and the Definitive Proxy
Statement complies with applicable law, and that no further disclosure is required. However, solely in order to mitigate any risk of the Actions and the Shareholder Letters delaying or otherwise adversely affecting the consummation of the
Transactions and to minimize any costs, risks, and uncertainties inherent in any litigation related thereto, and without admitting any liability or wrongdoing, SNDA and CHP have determined to voluntarily supplement the Definitive Proxy Statement as
described in this Current Report on Form 8-K. Nothing in this Current Report on Form 8-K shall be deemed an admission of the legal necessity or materiality under
applicable laws of any of the disclosures set forth herein. To the contrary, SNDA specifically denies all allegations in the Actions and the Shareholder Letters and any assertion that additional disclosure was or is required.
These supplemental disclosures will not change the consideration to be paid to CHP stockholders in connection with the Transactions or the timing of the SNDA
Special Meeting. The Board continues to recommend that you vote “FOR” each of the proposals to be voted on at the SNDA Special Meeting described in the Definitive Proxy Statement.
The information contained in this Current Report on Form 8-K is incorporated by reference into the Definitive Proxy
Statement. To the extent that information in this Current Report on Form 8-K differs from or updates information contained in the Definitive Proxy Statement, the information in this Current Report on Form 8-K shall supersede or supplement such information in the Definitive Proxy Statement.