| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 08/16/2023 | FIRST FINANCIAL BANKSHARES INC | FFIN | Disposition | Common Stock | 363 | $0.00 | $0 | | 08/16/2023 |
| 08/16/2023 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Employee Stock Option, Right to Buy | 7.5k | $29.53 | $222.7k | | 08/16/2023 |
| 08/16/2023 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Deferred Stock Units | 363 | $0.00 | $0 | | 08/16/2023 |
| 08/16/2023 | FIRST FINANCIAL BANKSHARES INC | FFIN | Payment of Exercise | Common Stock | 64 | $29.53 | $1.9k | | 08/16/2023 |
| 08/16/2023 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Common Stock | 2.1k | $0.00 | $0 | | 08/16/2023 |
| 08/03/2023 | FIRST FINANCIAL BANKSHARES INC | FFIN | Exercise | Employee Stock Option, Right to Buy | 3.1k | $21.18 | $65.7k | | 08/03/2023 |
| 11/02/2022 | FIRST FINANCIAL BANKSHARES INC | FFIN | Payment of Exercise | Common Stock | 135 | $37.04 | $5k | | 11/02/2022 |
| 11/02/2022 | FIRST FINANCIAL BANKSHARES INC | FFIN | Payment of Exercise | Common Stock | 115 | $39.10 | $4.5k | | 11/02/2022 |
| 09/15/2022 | FIRST FINANCIAL BANKSHARES INC | FFIN | Exercise | Employee Stock Option, Right to Buy | 4k | $16.95 | $67.8k | | 09/15/2022 |
| 08/16/2022 | FIRST FINANCIAL BANKSHARES INC | FFIN | Payment of Exercise | Common Stock | 65 | $47.19 | $3.1k | | 08/16/2022 |
| 08/16/2022 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Common Stock | 1.1k | $0.00 | $0 | | 08/16/2022 |
| 08/16/2022 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Employee Stock Option, Right to Buy | 4.5k | $47.19 | $210.7k | | 08/16/2022 |
| 10/27/2021 | FIRST FINANCIAL BANKSHARES INC | FFIN | Payment of Exercise | Common Stock | 396 | $48.85 | $19.3k | | 10/27/2021 |
| 09/02/2021 | FIRST FINANCIAL BANKSHARES INC | FFIN | Exercise | Employee Stock Option, Right to Buy | 4.3k | $16.95 | $72.9k | | 09/02/2021 |
| 12/04/2020 | FIRST FINANCIAL BANKSHARES INC | FFIN | Exercise | Eomployee Stock Option, Right to Buy | 2.5k | $16.95 | $42.4k | | 12/04/2020 |
| 10/27/2020 | FIRST FINANCIAL BANKSHARES INC | FFIN | Payment of Exercise | Common Stock | 367 | $31.23 | $11.5k | | 10/27/2020 |
| 10/27/2020 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Common Stock | 1.7k | $0.00 | $0 | | 10/27/2020 |
| 10/27/2020 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Common Stock | 1.7k | $0.00 | $0 | | 10/27/2020 |
| 10/27/2020 | FIRST FINANCIAL BANKSHARES INC | FFIN | Payment of Exercise | Common Stock | 367 | $31.23 | $11.5k | | 10/27/2020 |
| 06/03/2020 | FIRST FINANCIAL BANKSHARES INC | FFIN | Exercise | Employee Stock Option, Right to Buy | 1.2k | $16.95 | $20.3k | | 06/03/2020 |
| 12/03/2019 | FIRST FINANCIAL BANKSHARES INC | FFIN | Exercise | Employee Stock Option, Right to Buy | 1.7k | $15.43 | $26.2k | | 12/03/2019 |
| 10/22/2019 | FIRST FINANCIAL BANKSHARES INC | FFIN | Payment of Exercise | Common Stock | 390 | $35.38 | $13.8k | | 10/22/2019 |
| 10/22/2019 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Common Stock | 1.4k | $0.00 | $0 | | 10/22/2019 |
| 06/26/2019 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Employee Stock Option, Right to Buy | 10k | $29.70 | $297k | | 06/26/2019 |
| 12/07/2018 | FIRST FINANCIAL BANKSHARES INC | FFIN | Exercise | Employee Stock Option, Right to Buy | 750 | $30.85 | $23.1k | | 12/07/2018 |
| 10/23/2018 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Common Stock | 904 | $0.00 | $0 | | 10/23/2018 |
| 10/23/2018 | FIRST FINANCIAL BANKSHARES INC | FFIN | Payment of Exercise | Common Stock | 194 | $55.34 | $10.7k | | 10/23/2018 |
| 12/06/2017 | FIRST FINANCIAL BANKSHARES INC | FFIN | Exercise | Employee Stock Option, Right to Buy | 400 | $30.85 | $12.3k | | 12/06/2017 |
| 12/06/2017 | FIRST FINANCIAL BANKSHARES INC | FFIN | Exercise | Employee Stock Option, Right to Buy | 200 | $15.73 | $3.1k | | 12/06/2017 |
| 10/24/2017 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Common Stock | 650 | $0.00 | $0 | | 10/24/2017 |
| 12/08/2016 | FIRST FINANCIAL BANKSHARES INC | FFIN | Exercise | Employee Stock Option, Right to Buy | 800 | $15.73 | $12.6k | | 12/09/2016 |
| 10/25/2016 | FIRST FINANCIAL BANKSHARES INC | FFIN | Grant | Common Stock | 825 | $0.00 | $0 | | 10/25/2016 |