Other Events The Board of Directors (the “Board”) of HNI Corporation (the “Corporation”) has approved the additional expenditure of up to $200 million to repurchase the Corporation’s outstanding shares of Common Stock from time to time under the Corporation’s existing share repurchase program (the “Program”). As of August 17, 2026, the Corporation had $84.3 million remaining authorization under the Program, bringing the total authorization to $284.3 million following approval of the increase.…

and in Exhibit 99.1 to this current report is being “furnished” with the Securities and Exchange Commission and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities under such section. Further, such information shall not be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, unless specifically identifi…

Entry into a Material Definitive Agreement. Credit Agreement Refinancing On June 10, 2026, HNI Corporation, an Iowa corporation (“HNI”) entered into Amendment No. 3 to Credit Agreement (“Amendment No. 3”) by and among HNI, the other Credit Parties party thereto, the 2026 Refinancing Term Lenders (as defined therein), and Wells Fargo Bank, National Association, as Administrative Agent (in such capacity, the “Administrative Agent”), which amends that certain Credit Agreement, dated as of Septem…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth in

Vincent P. (VP) Berger II: The filing details a new Change in Control Employment Agreement for the CFO, replacing an existing agreement.

and in Exhibit 99.1 to this current report is being “furnished” with the Securities and Exchange Commission and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities under such section. Further, such information shall not be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, unless specifically identifi…

and in Exhibit 99.1 to this current report is being “furnished” with the Securities and Exchange Commission and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities under such section. Further, such information shall not be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, unless specifically identifi…

is filed as part of this Current Report on Form 8-K. Exhibit No. Description 99.1 Text of press release dated as of January 8, 2026. 104 The cover page from this Current Report on Form 8-K, formatted as Inline XBRL. 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. HNI CORPORATION Date: January 8, 2026 By: /s/ Vincent Paul Berger II Vincent Paul Berg…

Section 9 Financial Statements and Exhibits.

Director — Timothy C. E. Brown: The filing discloses the appointment of two new directors to the board of HNI as part of a merger agreement, which is a standard board composition change rather than an executive departure.

Completion of Acquisition or Disposition of Assets The information set forth in the Introductory Note and this Current Report on Form 8-K is incorporated herein by reference. Pursuant to the Merger Agreement, at the effective time of the first merger (the “ First Effective Time ”), each share of Steelcase class A common stock, no par value (“ Steelcase common stock ”), issued and outstanding immediately before the First Effective Time (other than shares of Steelcase common stock owned by HNI,…

Entry into a Definitive Material Agreement Amendment No. 2 to Credit Agreement On December 10, 2025, HNI entered into Amendment No. 2 to the Credit Agreement (“ Amendment No. 2 ”), which amends the Credit Agreement (dated as of September 5, 2025, and as amended by that certain Amendment No. 1, dated as of November 5, 2025, the “ Existing Credit Agreement ”, and the Existing Credit Agreement as amended by Amendment No. 2 , the “ Credit Agreement ”) among HNI, as borrower, certain domestic subs…

Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement of a Registrant The information set forth under

of Form 8-K, including Exhibit 99.1, and is not deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), is not subject to the liabilities of that section and is not deemed incorporated by reference in any filing under the Securities Act, as amended, or the Exchange Act. FORWARD-LOOKING STATEMENTS This communication contains forward-looking statements within the meaning of Section 21E of the Exchange Act and Section 27A of the Securiti…

and the information attached to this Form 8-K as Exhibit 99.1 shall be deemed to be “furnished” and 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 deemed incorporated by reference in any filing under the Securities Act of 1933, as amended (the “ Securities Act ”), or the Exchange Act except as expressly set forth by specific referenc…

Other Events As previously reported, on August 3, 2025, HNI Corporation, an Iowa company (“ HNI ”), entered into an Agreement and Plan of Merger (the “ Merger Agreement ”) with Steelcase Inc., a Michigan company (“ Steelcase ”), Geranium Merger Sub I, Inc., a Michigan corporation and a direct wholly owned subsidiary of HNI (“ Merger Sub Inc. ”), and Geranium Merger Sub II, LLC, a Michigan limited liability company and a direct wholly owned subsidiary of HNI (“ Merger Sub LLC ”), providing for…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth in

Entry into a Material Definitive Agreement. Amendment No. 1 to Credit Agreement On November 5, 2025 (the “Amendment Date”), HNI Corporation (the “Company”) entered into an amendment (the “Amendment”) to its Credit Agreement (the “Existing Credit Agreement” and, as amended by the Amendment, the “Amended Credit Agreement”) with Wells Fargo Bank, National Association, as administrative agent (the “Administrative Agent”) and the lenders party thereto. The Amendment was approved by all of the lend…

of Form 8-K and is not deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), is not subject to the liabilities of that section and is not deemed incorporated by reference in any filing under the Securities Act, as amended, or the Exchange Act. FORWARD-LOOKING STATEMENTS This communication contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934 and Section 27A of the Securities Act…

of Form 8-K, including Exhibit 99.1, and is not deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), is not subject to the liabilities of that section and is not deemed incorporated by reference in any filing under the Securities Act, as amended, or the Exchange Act. FORWARD-LOOKING STATEMENTS This communication contains forward-looking statements within the meaning of Section 21E of the Exchange Act and Section 27A of the Securiti…

and in Exhibit 99.1 to this current report is being “furnished” with the Securities and Exchange Commission and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities under such section. Further, such information shall not be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, unless specifically identifi…

Other Events. Results of Early Participation in Exchange Offer and Consent Solicitation On October 10, 2025, HNI Corporation (“HNI”) announced the early participation results of its previously announced (i) offer to exchange (the “Exchange Offer”) any and all outstanding 5.125% Notes due 2029 (the “Existing Steelcase Notes”) issued by Steelcase Inc. (“Steelcase”), for up to $450,000,000 aggregate principal amount of new notes to be issued by HNI, and (ii) solicitation of consent (the “Consent…

Other Events. On September 26, 2025, HNI Corporation (“HNI”) issued a press release announcing that, in connection with its pending acquisition (the “Acquisition”) of Steelcase Inc. (“Steelcase”), HNI commenced an offer to exchange (the “Exchange Offer”) any and all outstanding 5.125% Notes due 2029 (the “Existing Steelcase Notes” as issued by Steelcase held by Eligible Holders (as defined below)), for up to $450,000,000 aggregate principal amount of new notes to be issued by HNI (the “New HN…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth in

Entry into a Material Definitive Agreement. Credit Agreement On September 5, 2025 (the “Effective Date”), HNI Corporation (the “Company”) entered into a Credit Agreement, by and among the Company, the lenders from time to time party thereto, Wells Fargo Bank, National Association, as administrative agent (the “Administrative Agent”), JPMorgan Chase Bank, N.A., as syndication agent, JPMorgan Chase Bank, N.A., Wells Fargo Securities, LLC and U.S. Bank National Association as joint lead arranger…