Reg FD Disclosure

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): May 28, 2026 ALEXANDERS INC (Exact Name of Registrant as Specified in Charter) Delaware 001-06064 51-0100517 (State or Other (Commission (IRS Employer Jurisdiction of Incorporation) File Number) Identification No.) 210 Route 4 East Paramus, New Jersey 07652 (Address of Principal Executive offices) (Zip Code) Registrant’s telephone number, including area code: ( 201 ) 587-8541 Former name or former address, if changed since last report: N/A 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 Instructions A.2.): ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) 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, $1 par value per share ALX New York Stock Exchange     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. ☐ Item 7.01.      Regulation FD Disclosure.     On May 28, 2026, Alexander’s, Inc. issued a press release announcing that it has completed the previously announced sale of its Rego Park I shopping center, located in Queens, to Northwell Health, Inc. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference solely for purposes of this Item 7.01 disclosure. Exhibit 99.1 hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that Section and shall not be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or under the Exchange Act. Item 9.01.      Financial Statements and Exhibits.   Exhibit No. Description 99.1 Press Release, dated May 28, 2026. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). 2 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. ALEXANDER’S, INC. (Registrant)  By: /s/ Gary Hansen  Name: Gary Hansen  Title: Chief Financial Officer (duly authorized officer and principal financial and accounting officer)   Date: May 28, 2026   3