UNITED STATES
 SECURITIES AND EXCHANGE COMMISSION
 WASHINGTON, D.C. 20549

 FORM 10-K/A
 (Amendment No. 1)
 (Mark One)

 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

 For the fiscal year ended
 December 31, 2023

 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

 For the transition period from
 _____________
 to
 _____________

 Commission File Number 001-10822
 National Health Investors Inc
 (Exact name of registrant as specified in its charter)
 Maryland

 62-1470956

 (State or other jurisdiction of incorporation or organization)

 (I.R.S. Employer Identification No.)

 222 Robert Rose Drive

 Murfreesboro
 Tennessee
 37129

 (Address of principal executive offices)

 (Zip Code)

 (615)
 890-9100

 (Registrant's telephone number, including area code)

 Securities registered pursuant to Section 12(b) of the Act:
 Title of each Class
 Trading Symbol(s)
 Name of each exchange on which registered

 Common Stock, $0.01 par value
 NHI
 New York Stock Exchange

 Securities registered pursuant to Section 12(g) of the Act: None
 Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes No

 Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes No

 Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes No

 Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files) Yes No

 Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer", "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act

 Large Accelerated Filer

 Accelerated filer

 Emerging growth company

 Non-accelerated filer

 Smaller reporting 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.

 Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.

 If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.

 Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to Section 240.10D-1(b).

 Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes No

 The aggregate market value of shares of common stock held by non-affiliates on June 30, 2023 (based on the closing price of these shares on the New York Stock Exchange) was approximately $ 2,165,587,000. There were 43,409,841 shares of the registrant's common stock outstanding as of February 15, 2024.

 Auditor Name BDO USA, P.C. Auditor Location Nashville, TN PCAOB ID # 243

 DOCUMENTS INCORPORATED BY REFERENCE
 Portions of the Registrant's definitive proxy statement for its 2024 annual meeting of stockholders are incorporated by reference into Part III, Items 10, 11, 12, 13, and 14 of this Annual Report on Form 10-K.

 EXPLANATORY NOTE

 This Amendment No. 1 on Form 10-K/A (the "Amendment") is filed by National Health Investors, Inc. ("NHI" or the "Company") to amend its Annual Report on Form 10-K for the year ended December 31, 2023 (the "2023 Form 10-K"). The purpose of the Amendment is to (i) amend Part IV, Item 15 of the 2023 Form 10-K. No other items of the 2023 Form 10-K are amended in this Form 10-K/A.

 ITEM 15. Exhibits, Financial Statements and Financial Statement Schedules

 Item 15 has been amended to include the audited financial statements of Senior Living Communities, LLC. Senior Living Communities, LLC is a significant lessee to NHI.

 As required by Rule 12b-15 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), updated certifications by the Principal Executive Officer and Principal Financial Officer are filed as exhibits to the Amendment in Part IV, Item 15.

 We make no attempt in this filing to update matters in the 2023 Form 10-K for any other activities or events occurring after the original filing date; neither do we change any previously reported financial results of operations or any disclosures contained in that document except to the extent expressly provided herein.

 EXHIBIT INDEX

 Exhibit No.
 Description
 Page No. or Location

 23.2
 Consent of Moyer, DeVoe & Iocco, PLLC.

 31.1
 Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer

 31.2
 Rule 13a-14(a)/15d-14(a) Certification of Principal Financial Officer

 Certification pursuant to 18 U.S.C. Section 1350 by Chief Executive Officer and Principal Financial Officer

 99.1
 Senior Living Communities, LLC and Subsidiaries Financial Statements as of December 31, 2023 and 2022 and for the three years ended December 31, 2023, 2022 and 2021.

 SIGNATURES

 Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 NATIONAL HEALTH INVESTORS, INC.

 By: /s/ John L. Spaid
 Name: John L. Spaid
 Title: Principal Financial Officer

 Date: February 26, 2024