X0407 4 2023-06-14 0 0000059527 LINCOLN ELECTRIC HOLDINGS INC LECO 0001219555 MAPES CHRISTOPHER L 22801 ST. CLAIR AVENUE CLEVELAND OH 44117-1199 1 1 0 0 Chairman, President and CEO 0 Common Shares 2023-06-14 4 M 0 89030 58.14 A 269414.001 D Common Shares 2023-06-14 4 S 0 26242 193.58 D 243172.001 D Common Shares 2023-06-14 4 S 0 51929 194.36 D 191243.001 D Common Shares 2023-06-14 4 S 0 10859 195.07 D 180384.001 D Employee Stock Option (Right to Buy) 58.14 2023-06-14 4 M 0 89030 0.00 D 2026-02-17 Common Stock 89030 0 D This transaction was executed in multiple trades at prices ranging from $192.88 to $193.87. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $193.88 to $194.87. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $194.88 to $195.44. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. Exercisable in equal installments on the first, second and third anniversaries of the date of grant. /s/ Susan K. Prewitt, Attorney-in-Fact 2023-06-15