144 0001070847 XXXXXXXX LIVE 0000889331 Littelfuse, Inc. 000-20388 6133 North River Road Suite 500 Rosemont IL 60018 7736281000 Anthony Grillo Director Common Stock Merrill Lynch

One Bryant Park, 28th Floor New York NY 10036

5000 1731156 24901687 02/10/2026 NASDAQ Common Stock 04/26/2021 Vesting of RSU Issuer N 178 04/26/2021 Compensation Common Stock 04/23/2021 Vesting of RSU Issuer N 269 04/23/2021 Compensation Common Stock 04/27/2021 Vesting of RSU Issuer N 156 04/27/2021 Compensation Common Stock 04/23/2023 Vesting of RSU Issuer N 269 04/23/2023 Compensation Common Stock 04/22/2023 Vesting of RSU Issuer N 132 04/22/2023 Compensation Common Stock 04/28/2023 Vesting of RSU Issuer N 166 04/28/2023 Compensation Common Stock 04/28/2024 Vesting of RSU Issuer N 166 04/28/2024 Compensation Common Stock 04/27/2024 Vesting of RSU Issuer N 156 04/27/2024 Compensation Common Stock 04/23/2022 Vesting of RSU Issuer N 269 04/23/2022 Compensation Common Stock 04/22/2022 Vesting of RSU Issuer N 132 04/22/2022 Compensation Common Stock 04/22/2024 Vesting of RSU Issuer N 132 04/22/2024 Compensation Common Stock 04/26/2022 Vesting of RSU Issuer N 179 04/26/2022 Compensation Common Stock 03/21/2025 Stock option exercise Issuer N 800 03/21/2025 Cash Common Stock 02/08/2024 Stock option exercise Issuer N 945 02/08/2024 Cash Common Stock 04/28/2020 Vesting of RSU Issuer N 168 04/28/2020 Compensation Common Stock 04/27/2020 Vesting of RSU Issuer N 156 04/27/2020 Compensation Common Stock 04/26/2020 Vesting of RSU Issuer N 179 04/26/2020 Compensation Common Stock 01/30/2023 Stock option exercise Issuer N 548 01/30/2023 Cash Y 02/10/2026 Anthony Grillo