Andersen Group Inc.

Item 2.02. Results of Operations and Financial Condition. On May 12, 2026, Andersen Group Inc. (“Andersen”, “we” or the “Company”) issued a press release announcing financial results for the first-quarter ended March 31, 2026. A copy of the press release (including accompanying financial tables) (the “Press Release”) is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein. The Company will hold a conference call on May 12, 2026 at 5:00 PM Eastern to announce financial results for the first-quarter ended March 31, 2026.

Item 7.01. Regulation FD Disclosure On May 12, 2026, the Company posted to the investor relations page of its website an updated investor presentation that will be used at upcoming investor and analyst meetings (the “Presentation”). The Presentation includes certain financial results, operating data and other information. The Company routinely posts announcements, updates, events, investor information and presentations and recent news releases on its website at http://www.andersen.com. Information on the Company’s website is not incorporated by reference in this Current Report on Form 8-K and does not constitute a part of this Current Report on Form 8-K. The information included herein, including Exhibit 99.1 furnished herewith, 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 incorporated by reference into any filing pursuant to the Securities Act of 1933, as amended, or the Exchange Act, regardless of any incorporation by reference language in any such filing, except as expressly set forth by specific reference in such filing.