| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 03/31/2023 | Williams Industrial Services Group Inc. | WLMS | Payment of Exercise | Common Stock, $0.01 par value per share | 8.3k | $1.03 | $8.6k | | 03/31/2023 |
| 03/31/2023 | Williams Industrial Services Group Inc. | WLMS | Exercise | Restricted Stock Units | 14.3k | $0.00 | $0 | | 03/31/2023 |
| 03/31/2023 | Williams Industrial Services Group Inc. | WLMS | Exercise | Restricted Stock Units | 9.2k | $0.00 | $0 | | 03/31/2023 |
| 12/31/2022 | Williams Industrial Services Group Inc. | WLMS | Payment of Exercise | Common Stock, $0.01 par value per share | 9.1k | $1.02 | $9.3k | | 12/31/2022 |
| 12/31/2022 | Williams Industrial Services Group Inc. | WLMS | Exercise | Performance-Based Restricted Stock Units | 30.3k | $0.00 | $0 | | 12/31/2022 |
| 04/06/2022 | Williams Industrial Services Group Inc. | WLMS | Payment of Exercise | Common Stock, $0.01 par value per share | 8.2k | $1.92 | $15.8k | | 04/06/2022 |
| 03/31/2022 | Williams Industrial Services Group Inc. | WLMS | Exercise | Restricted Stock Units | 8.9k | $0.00 | $0 | | 03/31/2022 |
| 03/31/2022 | Williams Industrial Services Group Inc. | WLMS | Exercise | Restricted Stock Units | 14.3k | $0.00 | $0 | | 03/31/2022 |
| 03/31/2022 | Williams Industrial Services Group Inc. | WLMS | Grant | Restricted Stock Units | 27.5k | $0.00 | $0 | | 03/31/2022 |
| 03/31/2021 | Williams Industrial Services Group Inc. | WLMS | Grant | Common Stock, $0.01 par value per share | 12k | $0.00 | $0 | | 03/31/2021 |
| 03/31/2021 | Williams Industrial Services Group Inc. | WLMS | Payment of Exercise | Common Stock, $0.01 par value per share | 13.6k | $3.48 | $47.5k | | 03/31/2021 |
| 03/31/2021 | Williams Industrial Services Group Inc. | WLMS | Exercise | Restricted Stock Units | 8.9k | $0.00 | $0 | | 03/31/2021 |
| 03/31/2021 | Williams Industrial Services Group Inc. | WLMS | Exercise | Restricted Stock Units | 14.3k | $0.00 | $0 | | 03/31/2021 |
| 03/31/2021 | Williams Industrial Services Group Inc. | WLMS | Grant | Restricted Stock Units | 22.8k | $0.00 | $0 | | 03/31/2021 |
| 03/31/2020 | Williams Industrial Services Group Inc. | WLMS | Grant | Restricted Stock Units | 43k | $0.00 | $0 | | 03/31/2020 |
| 03/31/2020 | Williams Industrial Services Group Inc. | WLMS | Exercise | | 8.9k | $0.00 | $0 | | 03/31/2020 |
| 03/31/2020 | Williams Industrial Services Group Inc. | WLMS | Payment of Exercise | Common Stock, $0.01 par value per share | 14.6k | $1.19 | $17.4k | | 03/31/2020 |
| 03/31/2020 | Williams Industrial Services Group Inc. | WLMS | Grant | Common Stock, $0.01 par value per share | 26.1k | $0.00 | $0 | | 03/31/2020 |
| 03/05/2020 | Williams Industrial Services Group Inc. | WLMS | Exercise | Common Stock, $0.01 par value per share | 5.9k | $1.30 | $7.6k | | 03/05/2020 |
| 03/05/2020 | Williams Industrial Services Group Inc. | WLMS | Exercise | | 20.7k | $0.00 | $0 | | 03/05/2020 |
| 04/03/2019 | Williams Industrial Services Group Inc. | WLMS | Grant | Phantom Stock Units | 26.8k | $0.00 | $0 | | 04/03/2019 |
| 03/31/2019 | Williams Industrial Services Group Inc. | WLMS | Payment of Exercise | Common Stock, $0.01 par value per share | 4.6k | $2.38 | $11k | | 03/31/2019 |
| 06/20/2018 | Williams Industrial Services Group Inc. | WLMS | Grant | Performance-Based Restricted Stock Units | 30.3k | $0.00 | $0 | | 03/31/2019 |
| 06/20/2018 | Williams Industrial Services Group Inc. | WLMS | Grant | Performance-Based Restricted Stock Units | 30.3k | $0.00 | $0 | | 06/20/2018 |
| 06/20/2018 | Williams Industrial Services Group Inc. | WLMS | Grant | Common Stock, $0.01 par value per share | 30.3k | $0.00 | $0 | | 06/20/2018 |
| 03/30/2018 | Williams Industrial Services Group Inc. | WLMS | Payment of Exercise | Common Stock, $0.01 par value per share | 3.2k | $2.79 | $9k | | 03/30/2018 |
| 12/15/2017 | Williams Industrial Services Group Inc. | WLMS | Payment of Exercise | Common Stock, $0.01 par value per share | 1000 | $3.32 | $3.3k | | 12/15/2017 |