LINCOLN ELECTRIC HOLDINGS INC 10-Q

ITEM 5. OTHER INFORMATION During the quarter ended September 30, 2025, none of the Company’s directors or officers adopted , modified, or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as those terms are defined in Item 408(a) of Regulation S-K. 36 Table of Contents ITEM 6. EXHIBITS (a) Exhibits ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 31.1 Certification of the Chair, President and Chief Executive Officer (Principal Executive Officer) pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934 (filed herewith). 31.2 Certification of the Executive Vice President, Chief Financial Officer and Treasurer (Principal Financial and Accounting Officer) pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934 (filed herewith). 32.1 Certification of the Chair, President and Chief Executive Officer (Principal Executive Officer) and Executive Vice President, Chief Financial Officer and Treasurer (Principal Financial and Accounting Officer) pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (filed herewith). ​ ​ 101.INS Inline XBRL Instance Document 101.SCH Inline XBRL Taxonomy Extension Schema Document 101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document 101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document 101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document 101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document 104 Cover page Interactive Data File (formatted as Inline XBRL and contained in the Exhibit 101 attachments) ​ Inline XBRL Taxonomy Extension Label Linkbase Document ​ ​ ​ ​ ​ 37 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. ​ ​ ​ ​ ​ LINCOLN ELECTRIC HOLDINGS, INC. ​ ​ ​ ​ ​ /s/ Gabriel Bruno ​ ​ Gabriel Bruno ​ ​ Executive Vice President, Chief Financial Officer and Treasurer ​ ​ (Principal Financial and Accounting Officer) ​ ​ October 30, 2025 ​ ​ ​ ​ ​ ​ ​ 38