144 0001766692 XXXXXXXX LIVE 0000889331 LITTELFUSE INC /DE 000-20388 6133 NORTH RIVER ROAD SUITE 500 ROSEMONT IL 60018 773-628-1000 Conrad Alexander Officer Littelfuse Inc Merrill

8890 Lyra Drive 5th Floor Columbus OH 43240

13210 3461020.00 24781558 08/25/2025 NASDAQ Common 04/26/2020 Restricted Stock Lapse Littelfuse Inc N 84 04/26/2020 na Common 04/27/2020 Restricted Stock Lapse Littelfuse Inc N 109 04/27/2020 na Common 04/28/2020 Restricted Stock Lapse Littelfuse Inc N 153 04/28/2020 na Common 04/23/2021 Restricted Stock Lapse Littelfuse Inc N 267 04/23/2021 na Common 04/26/2021 Restricted Stock Lapse Littelfuse Inc N 125 04/26/2021 na Common 04/27/2021 Restricted Stock Lapse Littelfuse Inc N 106 04/27/2021 na Common 04/22/2022 Restricted Stock Lapse Littelfuse Inc N 162 04/22/2022 na Common 04/23/2022 Restricted Stock Lapse Littelfuse Inc N 276 04/23/2022 na Common 04/26/2022 Restricted Stock Lapse Littelfuse Inc N 129 04/26/2022 na Common 04/22/2023 Restricted Stock Lapse Littelfuse Inc N 167 04/22/2023 na Common 04/23/2023 Restricted Stock Lapse Littelfuse Inc N 287 04/23/2023 na Common 04/28/2023 Restricted Stock Lapse Littelfuse Inc N 259 04/28/2023 na Common 04/22/2024 Restricted Stock Lapse Littelfuse Inc N 159 04/22/2024 na Common 04/27/2024 Restricted Stock Lapse Littelfuse Inc N 241 04/27/2024 na Common 04/28/2024 Restricted Stock Lapse Littelfuse Inc N 246 04/28/2024 na Common 04/25/2025 Restricted Stock Lapse Littelfuse Inc N 266 04/25/2025 na Common 04/27/2025 Restricted Stock Lapse Littelfuse Inc N 236 04/27/2025 na Common 04/28/2025 Restricted Stock Lapse Littelfuse Inc N 241 04/28/2025 na Common 04/26/2019 Stock Option Exercise Littelfuse Inc N 800 08/25/2025 Cash Common 04/23/2020 Stock Option Exercise Littelfuse Inc N 3604 08/25/2025 Cash Common 07/10/2020 Stock Option Exercise Littelfuse Inc N 5293 08/25/2025 cash Y 08/25/2025 Alexander Conrad