X0609 4 2026-09-14 0 0000048287 HNI CORP HNI 0002113737 Tasi Irene false 600 EAST SECOND STREET MUSCATINE IA 52761 0 1 0 0 President, Steelcase 0 Common Stock 2026-09-14 4 A 0 12409 0 A 12409 D Reflects shares of Common Stock of Issuer underlying restricted stock units ("RSUs") granted under the HNI Corporation Incentive Compensation Plan for Legacy Steelcase Employees, each representing a contingent right to receive one share of Common Stock, as follows: (a) 5,985 RSUs granted on September 14, 2026, which vest in three equal annual installments commencing on February 20, 2027; and (b) 6,424 RSUs granted on September 14, 2026, which vest in two equal annual installments commencing on September 14, 2027, subject in each case to the reporting person's continued service on each applicable vesting date. /s/ Steven M. Bradford as attorney-in-fact for Irene Tasi 2026-09-16