| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 07/31/2023 | Sensei Biotherapeutics, Inc. | | Disposition | Common Stock | 1.6M | $1.26 | $2M | See footnote | 07/31/2023 |
| 07/10/2023 | Sensei Biotherapeutics, Inc. | | Grant | Common Stock | 4.5k | $0.00 | $0 | See footnote | 07/10/2023 |
| 07/10/2023 | Sensei Biotherapeutics, Inc. | | Grant | Stock Option (Right to Buy) | 14.6k | $1.22 | $17.8k | See footnote | 07/10/2023 |
| 06/10/2022 | Sensei Biotherapeutics, Inc. | | Grant | Restricted Stock Unit Grant | 4.5k | $0.00 | $0 | See Footnote | 06/10/2022 |
| 06/10/2022 | Sensei Biotherapeutics, Inc. | | Grant | Stock Option (right to buy) | 14.6k | $2.05 | $29.8k | See Footnote | 06/10/2022 |
| 06/10/2022 | Sensei Biotherapeutics, Inc. | | Grant | Restricted Stock Unit Grant | 4.5k | $0.00 | $0 | See Footnote | 06/10/2022 |
| 06/10/2022 | Sensei Biotherapeutics, Inc. | | Grant | Stock Option (right to buy) | 14.6k | $2.05 | $29.8k | See Footnote | 06/10/2022 |
| 03/02/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 1.2k | $3.20 | $3.8k | See Footnote | 03/02/2022 |
| 03/02/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 1.2k | $3.20 | $3.8k | See Footnote | 03/02/2022 |
| 03/01/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 2.5k | $3.60 | $8.8k | See Footnote | 02/28/2022 |
| 02/28/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 42 | $3.60 | $151.2 | See Footnote | 02/28/2022 |
| 02/25/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 2.5k | $3.65 | $9.1k | See Footnote | 02/25/2022 |
| 02/24/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 15k | $3.63 | $54.4k | See Footnote | 02/23/2022 |
| 02/23/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 2.5k | $3.80 | $9.5k | See Footnote | 02/23/2022 |
| 02/18/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 15k | $3.97 | $59.6k | See Footnote | 02/17/2022 |
| 02/17/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 4.9k | $4.17 | $20.6k | See Footnote | 02/17/2022 |
| 02/16/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 2.6k | $4.25 | $10.8k | | 02/14/2022 |
| 02/14/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 10k | $4.18 | $41.8k | See Footnote | 02/14/2022 |
| 02/11/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 12.5k | $4.40 | $55k | See Footnote | 02/10/2022 |
| 02/10/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 5k | $4.58 | $22.9k | See Footnote | 02/10/2022 |
| 02/08/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 10k | $4.33 | $43.3k | See Footnote | 02/03/2022 |
| 02/04/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 2.5k | $4.45 | $11.1k | See Footnote | 02/03/2022 |
| 02/03/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 17.5k | $4.65 | $81.4k | See Footnote | 02/03/2022 |
| 01/28/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 8.9k | $4.22 | $37.6k | See Footnote | 01/27/2022 |
| 01/27/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 6.1k | $4.31 | $26.3k | See footnote | 01/27/2022 |
| 01/26/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 29.9k | $4.62 | $138.1k | See footnote | 01/25/2022 |
| 01/25/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 20.1k | $4.86 | $97.7k | See footnote | 01/25/2022 |
| 01/24/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 22.7k | $4.69 | $106.5k | See footnote | 01/21/2022 |
| 01/21/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 24.7k | $4.94 | $122k | See footnote | 01/21/2022 |
| 01/20/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 20k | $5.17 | $103.4k | See footnote | 01/19/2022 |
| 01/19/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 10.2k | $4.97 | $50.9k | See footnote | 01/19/2022 |
| 01/18/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 10k | $5.08 | $50.8k | See footnote | 01/18/2022 |
| 01/14/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 6.2k | $4.99 | $31k | See footnote | 01/13/2022 |
| 01/13/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 20k | $5.13 | $102.4k | See footnote | 01/13/2022 |
| 01/12/2022 | Sensei Biotherapeutics, Inc. | | Purchase | Common Stock | 9.2k | $5.22 | $48k | See footnote | 01/11/2022 |
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