| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 May 2025 | 19 May 2025 | 000-30319 |
| 4 | Open Document | Open Filing | 4 | 22 Apr 2025 | 18 Apr 2025 | 000-21392 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Jun 2024 | 17 Jun 2024 | 000-30319 |
| 4 | Open Document | Open Filing | 4 | 19 Apr 2024 | 18 Apr 2024 | 000-21392 |
| 4 | Open Document | Open Filing | 4 | 21 Jul 2023 | 21 Jul 2023 | 000-21392 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 May 2023 | 22 May 2023 | 000-30319 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 10 Mar 2023 | 28 Feb 2023 | 000-21392 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Apr 2022 | 25 Apr 2022 | 000-30319 |
| 4 | Open Document | Open Filing | FORM 4 | 20 May 2021 | 14 May 2021 | 000-30319 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 20 Oct 2020 | 20 Oct 2020 | 001-39640 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Apr 2020 | 24 Apr 2020 | 000-30319 |
| 4 | Open Document | Open Filing | 4 | 24 May 2019 | 24 Apr 2019 | 000-30319 |
| 4 | Open Document | Open Filing | 4 | 13 Aug 2018 | 09 Aug 2018 | 000-17082 |
| 4 | Open Document | Open Filing | FORM 4 - | 26 Apr 2018 | 24 Apr 2018 | 000-30319 |
| 4 | Open Document | Open Filing | FORM 4 - | 14 Feb 2018 | 12 Feb 2018 | 000-30319 |
| 3 | Open Document | Open Filing | FORM 3 - | 14 Feb 2018 | 12 Feb 2018 | 000-30319 |
| 4 | Open Document | Open Filing | 4 | 02 Aug 2017 | 01 Aug 2017 | 000-17082 |
| 3 | Open Document | Open Filing | 3 | 02 Aug 2017 | 01 Aug 2017 | 000-17082 |