| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 14 Aug 2025 | 12 Aug 2025 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Jul 2024 | 18 Jul 2024 | 000-28132 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Jul 2024 | 01 Jul 2024 | 811-23963 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 May 2024 | 10 Nov 2016 | 811-23791 |
| 4 | Open Document | Open Filing | 08 Feb 2024 | 07 Feb 2024 | 000-28132 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Jun 2023 | 15 Jun 2023 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Oct 2022 | 26 Oct 2022 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Jun 2022 | 07 Jun 2022 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 May 2021 | 20 May 2021 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Mar 2021 | 02 Mar 2021 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 May 2020 | 22 May 2020 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Oct 2019 | 16 Oct 2019 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 May 2019 | 22 May 2019 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Jan 2019 | 29 Jan 2019 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Jan 2019 | 09 Jan 2019 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Jun 2017 | 19 Jun 2017 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jun 2017 | 01 Jun 2017 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Sep 2016 | 13 Sep 2016 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 May 2016 | 25 May 2016 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Jan 2016 | 11 Jan 2016 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 May 2015 | 27 May 2015 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Jan 2015 | 20 Jan 2015 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Jan 2015 | 12 Jan 2015 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Sep 2014 | 18 Sep 2014 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Aug 2014 | 21 Aug 2014 | 000-28132 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Aug 2014 | 19 Aug 2014 | 000-28132 |