X0508 4 2025-05-05 0000889331 LITTELFUSE INC /DE LFUS 0001643464 Sethna Meenal 6133 NORTH RIVER ROAD, SUITE 500 ROSEMONT IL 60018 true Executive VP, CFO false Common Stock 2025-05-05 4 M 0 4000 177.65 A 28117 D Common Stock 2025-05-05 4 S 0 2955 195.08 D 25162 D Common Stock 2025-05-05 4 S 0 1045 195.65 D 24117 D Stock Option (right to buy) 177.65 2025-05-05 4 M 0 4000 0 D 2027-07-31 Common Stock 4000 7953 D The shares were sold in multiple transactions at prices ranging from $194.43 to $195.40, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. The shares were sold in multiple transactions at prices ranging from $195.43 to $196.04, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. The option for 11,953 shares vested in increments of one third annually beginning on the first anniversary of the July 31, 2020 date of grant. Ryan K. Stafford, Power of Attorney 2025-05-06