8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported) December 10, 2025

Sonida Senior Living, Inc.

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction

of incorporation)

(972) 770-5600

(Registrant’s telephone number, including area code)

Not applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Securities registered pursuant to Section 12(b) of the Act:

On December 10, 2025, the board of directors of Sonida Senior Living, Inc. (the “Company”) approved and adopted the Third Amendment to the Second Amended and Restated Bylaws of the Company (the “Third Amendment” and the Second Amended and Restated Bylaws of the Company, as amended prior to the Third Amendment, the “Bylaws”), which became effective immediately. The Third Amendment adds to the Bylaws the procedures regarding advance notice of stockholder nominations for the election of directors and other business to be brought before any meeting of stockholders of the Company that are currently contained in the Company’s Amended and Restated Certificate of Incorporation, as amended. The foregoing summary of the Third Amendment is qualified by reference to the full text of the Third Amendment, a copy of which is filed as Exhibit 3.1 to this Current Report on Form 8-K and incorporated herein by reference.

(d) Exhibits

SIGNATURES

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.

EX-3.1

Exhibit 3.1

THIRD AMENDMENT TO THE

SECOND AMENDED AND RESTATED BYLAWS

OF

SONIDA SENIOR LIVING,INC.

(Effective as of December 10, 2025)

The Second Amended and Restated Bylaws, as amended (the “Bylaws”), of Sonida Senior Living, Inc., a Delaware corporation, are hereby amended to add the following new Section 2.13 and Section 2.14:

2.13. Advance Notice of Nominations. Nominations of persons for election to the board of directors may be made at an annual meeting of stockholders or special meeting of stockholders called by the board of directors for the purpose of electing directors (i) by or at the direction of the board of directors or (ii) by any stockholder of the Corporation entitled to vote for the election of directors at such meeting who complies with the notice of procedures set forth in this Section 2.13. Such nominations, other than those made by or at the direction of the board of directors, shall be made pursuant to timely notice in writing to the Secretary of the Corporation. To be timely, a stockholder’s notice must be delivered to or mailed and received at the principal executive offices of the Corporation not less than 60 days nor more than 90 days prior to the scheduled date of the meeting, regardless of any postponement, deferral or adjournment of that meeting to a later date; provided, however, that if less than 70 days’ notice or prior public disclosure of the date of the meeting is given or made to stockholders, notice by the stockholder to be timely must be so delivered or received not later than the close of business on the 10th day following the earlier of (i) the day on which such notice of the date of the meeting was mailed or (ii) the day on which such public disclosure was made.

A stockholder’s notice to the Secretary shall set forth (i) as to each person whom the stockholder proposes to nominate for election or reelection as a director (a) the name, age, business address and residence address of such person, (b) the principal occupation or employment of such person, (c) the class and number of shares of the Corporation which are beneficially owned by such person on the date of such stockholder’s notice and (d) any other information relating to such person that is required to be disclosed in solicitations of proxies for election of directors, or is otherwise required, in each case pursuant to Regulation 14A under the Securities Exchange Act of 1934, or any successor statute thereto (including, without limitation, such person’s written consent to being named in the proxy statement as a nominee and to serving as a director if elected); (ii) as to the stockholder giving notice (a) the name and address, as such information appears on the Corporation’s books, of such stockholder and any other stockholders known by such stockholder to be supporting such nominee(s), (b) the class and number of shares of the Corporation which are beneficially owned by such stockholder and each other stockholder known by such stockholder to be supporting such nominee(s) on the date of such stockholder notice and (c) a representation that the stockholder is a holder of record of stock of the Corporation entitled to vote at such meeting and intends to appear in person or by proxy at the meeting to nominate the person or persons specified in the notice; and (iii) a description of all arrangements or understandings between the stockholder and each nominee and other person or persons (naming such person or persons) pursuant to which the nomination or nominations are to be made by the stockholder.

Subject to the rights, if any, of the holders of any series of Preferred Stock then outstanding, no person shall be eligible for election as a director of the Corporation unless nominated in accordance with the procedures set forth in this Section 2.13. The chairman of the meeting shall, if the facts warrant, determine and declare to the meeting that a nomination was not made in accordance with the procedures prescribed by this Section 2.13 and if he should so determine, he shall so declare to the meeting and the defective nomination shall be disregarded.

2.14. Advance Notice of Proposals. At the annual meeting of stockholders, only such business shall be conducted, and only such proposals shall be acted upon, as shall have been properly brought before the annual meeting of stockholders (i) by or at the direction of the board of directors or (ii) by a stockholder of the Corporation who complies with the procedures set forth in this Section 2.14. For business or a proposal to be properly brought before an annual meeting of stockholders by a stockholder, the stockholder must have given timely notice thereof in writing to the Secretary of the Corporation. To be timely, a stockholder’s notice must be delivered to or mailed and received at the principal executive offices of the Corporation not less than 60 days nor more than 90 days prior to the scheduled date of the annual meeting, regardless of any postponement, deferral or adjournment of that meeting to a later date; provided, however, that if less than 70 days’ notice or prior public disclosure of the date of the annual meeting is given or made to stockholders, notice by the stockholder to be timely must be so delivered or mailed and received not later than the close of business on the 10th day follow the earlier of (i) the day on which such notice of the date of the meeting was mailed or (ii) the day on which such public disclosure was made.

A stockholder’s notice to the Secretary shall set forth as to each matter the stockholder proposes to bring before an annual meeting of stockholders (i) a description, in 500 words or less, of the business desired to be brought before the annual meeting and the reasons for conducting such business at the annual meeting, (ii) the name and address, as such information appears on the Corporation’s books, of the stockholder proposing such business and any other stockholder known by such stockholder to be supporting such proposal, (iii) the class and number of shares of the Corporation that are beneficially owned by such stockholder and each other stockholder known by such stockholder to be supporting such proposal on the date of such stockholder’s notice, (iv) a description, in 500 words or less, of any interest of the stockholder in such proposal and (v) a representation that the stockholder is a holder of record of stock of the Corporation and intends to appear in person or by proxy at the meeting to present the proposal specified in the notice.

The chairman of the meeting shall, if the facts warrant, determine and declare to the meeting that the business was not properly brought before the meeting in accordance with the procedures prescribed by this Section 2.14, and if he should so determine, he shall so declare to the meeting and any such business not properly brought before the meeting shall not be transacted. Notwithstanding the foregoing, nothing in this Section 2.14 shall be interpreted or construed to require the inclusion of information about any such proposal in any proxy statement distributed by, at the direction of, or on behalf of, the board of directors.

2

IN WITNESS WHEREOF, the undersigned Secretary of Sonida Senior Living, Inc. certifies that the foregoing amendment to the Bylaws was duly adopted by the board of directors of Sonida Senior Living, Inc.