| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 06/07/2023 | 908 Devices Inc. | MASS | Sale | Common Stock | 4.5k | $10.03 | $44.8k | | 06/07/2023 |
| 05/23/2023 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 10k | $10.02 | $100.2k | | 05/23/2023 |
| 03/01/2023 | 908 Devices Inc. | MASS | Grant | Stock Option (option to buy) | 45k | $8.83 | $397.5k | | 03/01/2023 |
| 03/01/2023 | 908 Devices Inc. | MASS | Grant | Restricted Stock Unit | 29.7k | $0.00 | $0 | | 03/01/2023 |
| 09/12/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 20k | $19.58 | $391.6k | | 09/12/2022 |
| 07/06/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 6.8k | $21.04 | $143.1k | | 07/06/2022 |
| 07/06/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 3.2k | $21.78 | $69.7k | | 07/06/2022 |
| 06/30/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 3.7k | $20.12 | $74.4k | | 06/29/2022 |
| 06/29/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 16.5k | $20.22 | $333k | | 06/29/2022 |
| 04/12/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 9.8k | $20.06 | $197.2k | | 04/12/2022 |
| 03/18/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 19.9k | $20.06 | $399.2k | | 03/18/2022 |
| 03/11/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 100 | $20.00 | $2k | | 03/11/2022 |
| 03/01/2022 | 908 Devices Inc. | MASS | Grant | Stock Option (option to buy) | 33.4k | $16.66 | $556.4k | | 03/01/2022 |
| 03/01/2022 | 908 Devices Inc. | MASS | Grant | Restricted Stock Unit | 20.1k | $0.00 | $0 | | 03/01/2022 |
| 01/05/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 3.3k | $22.89 | $75.2k | | 01/05/2022 |
| 01/05/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 6.7k | $24.05 | $161.5k | | 01/05/2022 |
| 12/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 8.8k | $23.80 | $208.7k | | 12/01/2021 |
| 12/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 1.2k | $24.29 | $29.9k | | 12/01/2021 |
| 11/03/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 11.6k | $32.75 | $379k | | 11/03/2021 |
| 11/03/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 3.4k | $33.24 | $113.9k | | 11/03/2021 |
| 10/06/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 13.4k | $32.19 | $432k | | 10/06/2021 |
| 10/06/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 1.6k | $33.33 | $52.7k | | 10/06/2021 |
| 09/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 8.7k | $35.68 | $309.9k | | 09/01/2021 |
| 09/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 6.3k | $36.24 | $228.9k | | 09/01/2021 |
| 08/04/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 4.5k | $31.58 | $142.1k | | 08/04/2021 |
| 08/04/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 5.1k | $32.47 | $165.6k | | 08/04/2021 |
| 08/04/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 5.4k | $33.40 | $180.4k | | 08/04/2021 |
| 07/07/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 29.8k | $33.52 | $997.7k | | 07/07/2021 |
| 07/07/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 5k | $34.25 | $172.4k | | 07/07/2021 |
| 07/07/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 200 | $34.99 | $7k | | 07/07/2021 |
| 12/22/2020 | 908 Devices Inc. | MASS | Conversion | Common Stock, par value $0.001 | 4.4k | $0.00 | $0 | | 12/22/2020 |
| 12/22/2020 | 908 Devices Inc. | MASS | Conversion | Series D Preferred Stock | 4.4k | $0.00 | $0 | | 12/22/2020 |