| Name of Subsidiary | Jurisdiction of Organization | |||||||
| Acacia Communications (Canada) Limited | Canada | |||||||
| Acacia Communications Europe ApS | Denmark | |||||||
| Acacia Communications Holdings, Ltd. | Bermuda | |||||||
| Acacia Communications (Ireland) Limited | Ireland | |||||||
| Acacia Communications (Germany) GmbH | Germany | |||||||
| Acacia Communications (Shenzhen) Limited | China | |||||||
| ACIA Communications Technology (India) Private Limited | India | |||||||
| Acacia Technologies (UK) Limited | United Kingdom | |||||||