| | | | | |
| Name | State of Other Jurisdiction of Incorporation or Organization |
| Allegro MicroSystems, LLC | Delaware |
| Allegro MicroSystems Argentina, S.A. | Argentina |
| Allegro MicroSystems Argentina S.A. Sucursal Uruguay | Uruguay |
| Allegro MicroSystems Business Development, Inc. | Delaware |
| Allegro MicroSystems Europe Limited | United Kingdom |
| Allegro MicroSystems France SAS | France |
| Allegro MicroSystems Germany GmbH | Germany |
| Allegro (Shanghai) Micro Electronics Commercial and Trading Co., Ltd. | China |
| Allegro MicroSystems Philippines, Inc. | Philippines |
| Allegro MicroSystems, Thailand Corp. | Thailand |
| Allegro MicroSystems Philippines Realty Inc. | Philippines |
| LadarSystems, LLC | Wyoming |
| CrivaSense Technologies SAS | France |
| Silicon Structures LLC | Delaware |
| Voxtel, LLC | Delaware |