Final milestones achieved ahead of anticipated December 10, 2025 closing (Form 8-K)

Final milestones achieved ahead of anticipated December 10, 2025 closing

MUSCATINE, Iowa & GRAND RAPIDS, Mich., December 5, 2025 - HNI Corporation (NYSE: HNI) ("HNI") and Steelcase Inc. (NYSE: SCS) ("Steelcase") today announced that, in connection with HNI's proposed acquisition of Steelcase (the "Transaction") contemplated by their agreement and plan of merger dated as of August 3, 2025 (the "Merger Agreement"), (1) the shareholders of HNI have voted in favor of the proposal to approve the issuance of shares of HNI common stock to holders of Steelcase common stock pursuant to the Merger Agreement (the " HNI Proposal") and (2) the shareholders of Steelcase have voted in favor of the proposal to adopt the Merger Agreement and approve the first merger contemplated thereby (the "Steelcase Merger Proposal").

At the special meeting of HNI's shareholders held earlier today, approximately 96.88% of the shares voted, representing approximately 84.52% of the total outstanding shares of HNI common stock as of the record date, October 14, 2025, were cast in favor of the HNI Proposal. HNI will provide a full report of the voting results from its special meeting of shareholders in a Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission ("SEC").

At the special meeting of Steelcase's shareholders held earlier today, approximately 99.60% of the shares voted on the Steelcase Merger Proposal, representing approximately 69.93% of the total outstanding shares of Steelcase common stock as of the record date, October 14, 2025, were cast in favor of the Steelcase Merger Proposal. Steelcase will provide a full report of the voting results from its special meeting of shareholders in a Current Report on Form 8-K filed with the SEC.

The Transaction is anticipated to close on December 10, 2025, subject to the satisfaction or waiver of customary closing conditions specified in the Merger Agreement.

About Steelcase Inc.

Steelcase Inc. (NYSE: SCS) is a global design and thought leader in the world of work. Steelcase's purpose is to help the world work better. Along with more than 30 creative and technology partner brands, Steelcase researches, designs and manufactures furnishings and solutions for many of the places where work happens - including offices, homes and learning and health environments. Together with its 11,300 employees, Steelcase is working toward better futures for the wellbeing of people and the planet. Steelcase's solutions come to life through its global community of expert Steelcase dealers in approximately 790 locations, store.steelcase.com and other retail partners. For more information, visit Steelcase.com.

About HNI Corporation

HNI Corporation (NYSE: HNI) has been improving where people live, work and gather for more than 75 years. HNI is a manufacturer of workplace furnishings and residential building products, operating under two segments. The Workplace Furnishings segment is a leading global designer and provider of commercial furnishings, going to market under multiple unique brands. The Residential Building Products segment is the nation's leading manufacturer and marketer of hearth products, which include a full array of gas, electric, wood, and pellet-burning fireplaces, inserts, stoves, facings, and accessories. More information can be found on HNI's website at www.hnicorp.com.