| Name | Jurisdiction of Incorporation or Organization  | |||||||
| PL-US International LLC | United States | |||||||
| Hubs Manufacturing Inc. | United States | |||||||
| 3D Hubs Manufacturing LLC | United States | |||||||
| Proto Labs Ltd. | United Kingdom | |||||||
| PL International Holdings, UK, Ltd. | United Kingdom | |||||||
| PL Euro Services Limited | United Kingdom | |||||||
| Proto Labs GmbH | Germany | |||||||
| Proto Labs Tooling GmbH | Germany | |||||||
| 3D Hubs B.V. | Netherlands | |||||||