| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 03/01/2021 | Acacia Communications, Inc. | ACIA | Disposition | Common Stock | 191.9k | $115.00 | $22.1M | | 03/01/2021 |
| 03/01/2021 | Acacia Communications, Inc. | ACIA | Disposition | Common Stock | 23k | $115.00 | $2.6M | By The Reiss Family Irrevocable Trust | 03/01/2021 |
| 03/01/2021 | Acacia Communications, Inc. | ACIA | Disposition | Common Stock | 50.6k | $115.00 | $5.8M | By Matrix VIII US Management Co., L.L.C. | 03/01/2021 |
| 11/26/2019 | Acacia Communications, Inc. | ACIA | Gift | Common Stock | 2.1k | $0.00 | $0 | | 11/26/2019 |
| 05/16/2019 | Acacia Communications, Inc. | ACIA | Grant | Common Stock | 4k | $0.00 | $0 | | 05/16/2019 |
| 05/16/2019 | Acacia Communications, Inc. | ACIA | Grant | Common Stock | 4k | $0.00 | $0 | | 05/16/2019 |
| 03/14/2019 | Acacia Communications, Inc. | ACIA | Sale | Common Stock | 26.6k | $53.49 | $1.4M | | 03/13/2019 |
| 03/14/2019 | Acacia Communications, Inc. | ACIA | Sale | Common Stock | 3.4k | $53.67 | $183k | By The Reiss Family Irrevocable Trust | 03/13/2019 |
| 03/13/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 18.5k | $0.00 | $0 | | 03/13/2019 |
| 03/13/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 2.4k | $0.00 | $0 | By The Reiss Family Irrevocable Trust | 03/13/2019 |
| 03/13/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 279.3k | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 03/13/2019 |
| 03/13/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 283.3k | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 03/13/2019 |
| 03/13/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 552 | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 03/13/2019 |
| 03/13/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 552 | $0.00 | $0 | By Weston & Co. VIII LLC | 03/13/2019 |
| 03/13/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 1000k | $0.00 | $0 | By Matrix Partners VIII, L.P. | 03/13/2019 |
| 03/08/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 632 | $0.00 | $0 | By Weston & Co. VIII LLC | 03/08/2019 |
| 03/08/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 1.1M | $0.00 | $0 | By Matrix Partners VIII, L.P. | 03/08/2019 |
| 03/08/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 632 | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 03/08/2019 |
| 03/08/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 335.8k | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 03/08/2019 |
| 03/08/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 331k | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 03/08/2019 |
| 03/08/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 2.8k | $0.00 | $0 | By The Reiss Family Irrevocable Trust | 03/08/2019 |
| 03/08/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 21.9k | $0.00 | $0 | | 03/08/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 1.5M | $0.00 | $0 | By Matrix Partners VIII, L.P. | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 1.5M | $0.00 | $0 | By Matrix Partners VIII, L.P. | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 827 | $0.00 | $0 | By Weston & Co. VIII LLC | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 827 | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 450k | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 442.8k | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 3.8k | $0.00 | $0 | By The Reiss Family Irrevocable Trust | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 29.3k | $0.00 | $0 | | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 827 | $0.00 | $0 | By Weston & Co. VIII LLC | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 827 | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 449.2k | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (disposition) | Common Stock | 442.8k | $0.00 | $0 | By Matrix VIII US Management Co., L.L.C. | 02/26/2019 |
| 02/26/2019 | Acacia Communications, Inc. | ACIA | Other (acquisition) | Common Stock | 3.8k | $0.00 | $0 | By The Reiss Family Irrevocable Trust | 02/26/2019 |
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