FULLER H B CO 10-Q

Item 5. Other Information Rule 10b5 - 1 Plan Adoptions and Modifications None. Item 6. Exhibits 10.1 Form of Deed of Director Irrevocable Undertaking (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed with the SEC on June 26, 2026). 10.2 Secured Bridge Credit Agreement, dated as of June 25, 2026, among the Company and Bidco, Goldman Sachs Bank USA, as Administrative Agent, Sole Lead Arranger and Bookrunner and the lenders party thereto (incorporated by reference to Exhibit 10.2 to the Current Report on Form 8-K filed with the SEC on June 26, 2026). 10.3 Unsecured Bridge Credit Agreement, dated as of June 25, 2026, among the Company and Bidco, Goldman Sachs Bank USA, as Administrative Agent, Sole Lead Arranger and Bookrunner and the lenders party thereto (incorporated by reference to Exhibit 10.3 to the Current Report on Form 8-K filed with the SEC on June 26, 2026). 10.4 Amendment No. 3, dated July 17, 2026, to the Second Amended and Restated Credit Agreement, dated February 15, 2023, among H.B. Fuller Company and JPMorgan Chase Bank, N.A., as administrative agent and the various other parties named thereto (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed with the SEC on July 20, 2026). 31.1 Form of 302 Certification – Celeste B. Mastin 31.2 Form of 302 Certification – John J. Corkrean 32.1 Form of 906 Certification – Celeste B. Mastin 32.2 Form of 906 Certification – John J. Corkrean 101 The following materials from the H.B. Fuller Company Quarterly Report on Form 10-Q for the quarter ended August 29, 2026 formatted in Inline Extensible Business Reporting Language (Inline XBRL): (i) the Consolidated Statements of Income, (ii) the Consolidated Statements of Comprehensive Income, (iii) the Consolidated Balance Sheets, (iv) the Consolidated Statements of Total Equity, (v) the Consolidated Statements of Cash Flows and (vi) the Notes to Consolidated Financial Statements. 104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101). 34 Table of Contents 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 thereunto duly authorized. H.B. Fuller Company Dated: September 24, 2026 /s/ John J. Corkrean John J. Corkrean Executive Vice President, Chief Financial Officer Exhibit Index Exhibits 10.1 Form of Deed of Director Irrevocable Undertaking (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed with the SEC on June 26, 2026). 10.2 Secured Bridge Credit Agreement, dated as of June 25, 2026, among the Company and Bidco, Goldman Sachs Bank USA, as Administrative Agent, Sole Lead Arranger and Bookrunner and the lenders party thereto (incorporated by reference to Exhibit 10.2 to the Current Report on Form 8-K filed with the SEC on June 26, 2026). 10.3 Unsecured Bridge Credit Agreement, dated as of June 25, 2026, among the Company and Bidco, Goldman Sachs Bank USA, as Administrative Agent, Sole Lead Arranger and Bookrunner and the lenders party thereto (incorporated by reference to Exhibit 10.3 to the Current Report on Form 8-K filed with the SEC on June 26, 2026). 10.4 Amendment No. 3, dated July 17, 2026, to the Second Amended and Restated Credit Agreement, dated February 15, 2023, among H.B. Fuller Company and JPMorgan Chase Bank, N.A., as administrative agent and the various other parties named thereto (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed with the SEC on July 20, 2026). 31.1 Form of 302 Certification – Celeste B. Mastin 31.2 Form of 302 Certification – John J. Corkrean 32.1 Form of 906 Certification – Celeste B. Mastin 32.2 Form of 906 Certification – John J. Corkrean 101 The following materials from the H.B. Fuller Company Quarterly Report on Form 10-Q for the quarter ended August 29, 2026 formatted in Inline Extensible Business Reporting Language (Inline XBRL): (i) the Consolidated Statements of Income, (ii) the Consolidated Statements of Comprehensive Income, (iii) the Consolidated Balance Sheets, (iv) the Consolidated Statements of Total Equity, (v) the Consolidated Statements of Cash Flows and (vi) the Notes to Consolidated Financial Statements. 104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101). 35