| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 03/05/2023 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 466 | $84.33 | $39.3k | | 03/05/2023 |
| 03/05/2023 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 3.4k | $0.00 | $0 | | 03/05/2023 |
| 03/05/2022 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 1.2k | $0.00 | $0 | | 03/05/2022 |
| 03/05/2022 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 397 | $0.00 | $0 | | 03/05/2022 |
| 03/05/2022 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 163 | $95.13 | $15.5k | | 03/05/2022 |
| 03/05/2022 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 404 | $95.13 | $38.4k | | 03/05/2022 |
| 03/05/2021 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 1.1k | $0.00 | $0 | | 03/05/2021 |
| 03/05/2021 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 485 | $0.00 | $0 | | 03/05/2021 |
| 03/05/2021 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 168 | $114.61 | $19.3k | | 03/05/2021 |
| 03/05/2021 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 409 | $114.61 | $46.9k | | 03/05/2021 |
| 03/05/2020 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 477 | $93.22 | $44.5k | | 03/05/2020 |
| 03/05/2020 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 641 | $93.22 | $59.8k | | 03/05/2020 |
| 03/05/2020 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 1.8k | $0.00 | $0 | | 03/05/2020 |
| 03/05/2020 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 1.1k | $0.00 | $0 | | 03/05/2020 |
| 10/31/2019 | KAISER ALUMINUM CORP | KALU | Sale | Common Stock, par value $0.01 per share | 1.8k | $108.00 | $192.6k | Krouse Family Trust | 10/30/2019 |
| 10/30/2019 | KAISER ALUMINUM CORP | KALU | Sale | Common Stock, par value $0.01 per share | 500 | $108.26 | $54.1k | | 10/30/2019 |
| 05/13/2019 | KAISER ALUMINUM CORP | KALU | Sale | Common Stock, par value $0.01 per share | 1.1k | $93.44 | $102.8k | | 05/13/2019 |
| 03/05/2019 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 1.1k | $0.00 | $0 | | 03/05/2019 |
| 03/05/2019 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 1.7k | $0.00 | $0 | | 03/05/2019 |
| 03/05/2019 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 625 | $108.79 | $68k | | 03/05/2019 |
| 03/05/2019 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 483 | $108.79 | $52.5k | | 03/05/2019 |
| 05/24/2018 | KAISER ALUMINUM CORP | KALU | Sale | Common Stock, par value $0.01 per share | 1.5k | $108.63 | $162.9k | Krouse Family Trust | 05/24/2018 |
| 03/05/2018 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 493 | $101.66 | $50.1k | | 03/05/2018 |
| 03/05/2018 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 1k | $101.66 | $105.8k | | 03/05/2018 |
| 03/05/2018 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 2.9k | $0.00 | $0 | | 03/05/2018 |
| 03/05/2018 | KAISER ALUMINUM CORP | KALU | Grant | Common Stock, par value $0.01 per share | 1k | $0.00 | $0 | | 03/05/2018 |
| 12/30/2016 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 557 | $77.69 | $43.3k | | 12/30/2016 |
| 12/30/2016 | KAISER ALUMINUM CORP | KALU | Payment of Exercise | Common Stock, par value $0.01 per share | 557 | $77.69 | $43.3k | | 12/30/2016 |