| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 07/19/2023 | Mayville Engineering Company, Inc. | MEC | Payment of Exercise | Common Stock | 10.3k | $11.22 | $115.1k | | 07/19/2023 |
| 07/19/2023 | Mayville Engineering Company, Inc. | MEC | Exercise | Restricted Stock Units | 32.1k | $0.00 | $0 | | 07/19/2023 |
| 02/28/2023 | Mayville Engineering Company, Inc. | MEC | Grant | Restricted Stock Units | 50.9k | $0.00 | $0 | | 02/28/2023 |
| 02/28/2023 | Mayville Engineering Company, Inc. | MEC | Grant | Stock Option (right to buy) | 88.9k | $16.22 | $1.4M | | 02/28/2023 |
| 11/04/2022 | Mayville Engineering Company, Inc. | MEC | Purchase | Common Stock | 12k | $9.51 | $114.3k | | 11/03/2022 |
| 11/04/2022 | Mayville Engineering Company, Inc. | MEC | Purchase | Common Stock | 1.6k | $9.89 | $15.8k | | 11/03/2022 |
| 11/04/2022 | Mayville Engineering Company, Inc. | MEC | Purchase | Common Stock | 12k | $9.51 | $114.3k | | 11/03/2022 |
| 11/04/2022 | Mayville Engineering Company, Inc. | MEC | Purchase | Common Stock | 1.6k | $9.89 | $15.8k | | 11/03/2022 |
| 11/03/2022 | Mayville Engineering Company, Inc. | MEC | Purchase | Common Stock | 13.5k | $8.69 | $117k | | 11/03/2022 |
| 11/03/2022 | Mayville Engineering Company, Inc. | MEC | Purchase | Common Stock | 13.5k | $8.69 | $117k | | 11/03/2022 |
| 07/19/2022 | Mayville Engineering Company, Inc. | MEC | Grant | Restricted Stock Units | 96.2k | $0.00 | $0 | | 07/19/2022 |