| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 05/23/2023 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 60k | $10.12 | $607.2k | | 05/23/2023 |
| 03/01/2023 | 908 Devices Inc. | MASS | Grant | Restricted Stock Unit | 53.8k | $0.00 | $0 | | 03/01/2023 |
| 03/01/2023 | 908 Devices Inc. | MASS | Grant | Performance-Based Restricted Stock Unit | 53.8k | $0.00 | $0 | | 03/01/2023 |
| 02/02/2023 | 908 Devices Inc. | MASS | Sale | Common Stock | 40k | $10.51 | $420.4k | | 02/01/2023 |
| 02/01/2023 | 908 Devices Inc. | MASS | Exercise | Restricted Stock Unit | 11.3k | $0.00 | $0 | | 02/01/2023 |
| 02/01/2023 | 908 Devices Inc. | MASS | Sale | Common Stock | 4k | $9.36 | $37.9k | | 02/01/2023 |
| 11/15/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 12.4k | $10.54 | $130.4k | | 11/15/2022 |
| 11/15/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 6.6k | $11.76 | $77.8k | | 11/15/2022 |
| 11/15/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 1k | $12.40 | $12.6k | | 11/15/2022 |
| 09/15/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 30k | $16.94 | $508.2k | | 09/15/2022 |
| 08/15/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 27.6k | $19.23 | $531.3k | | 08/15/2022 |
| 08/15/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 2.4k | $19.72 | $46.8k | | 08/15/2022 |
| 08/01/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 14.6k | $22.46 | $329k | | 07/28/2022 |
| 07/29/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 18k | $22.22 | $400k | | 07/28/2022 |
| 07/28/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 5.7k | $22.01 | $125.5k | | 07/28/2022 |
| 07/21/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 200 | $22.04 | $4.4k | | 07/21/2022 |
| 07/15/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 11.8k | $16.80 | $197.7k | | 07/15/2022 |
| 07/15/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 18.2k | $17.74 | $323.4k | | 07/15/2022 |
| 07/08/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 453 | $22.06 | $10k | | 07/06/2022 |
| 07/06/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 1000 | $22.07 | $22.1k | | 07/06/2022 |
| 06/21/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 9.2k | $15.07 | $138.6k | | 06/21/2022 |
| 06/15/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 18.8k | $14.62 | $274.9k | | 06/15/2022 |
| 06/15/2022 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 2k | $15.01 | $30k | | 06/15/2022 |
| 03/01/2022 | 908 Devices Inc. | MASS | Grant | Stock Option (option to buy) | 74.8k | $16.66 | $1.2M | | 03/01/2022 |
| 03/01/2022 | 908 Devices Inc. | MASS | Grant | Restricted Stock Unit | 45k | $0.00 | $0 | | 03/01/2022 |
| 11/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 3.9k | $33.71 | $131.4k | | 11/01/2021 |
| 11/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 7.8k | $34.38 | $267.3k | | 11/01/2021 |
| 11/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 8.3k | $35.27 | $293.7k | | 11/01/2021 |
| 10/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 9.7k | $32.89 | $319k | | 10/01/2021 |
| 10/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 4.8k | $33.73 | $162.9k | | 10/01/2021 |
| 10/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 5.5k | $34.93 | $191.1k | | 10/01/2021 |
| 09/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 5.6k | $35.40 | $198.2k | | 09/01/2021 |
| 09/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 10.8k | $36.02 | $389.7k | | 09/01/2021 |
| 09/01/2021 | 908 Devices Inc. | MASS | Sale | Common Stock, par value $0.001 | 3.6k | $36.37 | $130.3k | | 09/01/2021 |
| 12/22/2020 | 908 Devices Inc. | MASS | Conversion | | 53.2k | $0.00 | $0 | | 12/22/2020 |
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