| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Mar 2025 | 17 Mar 2025 | 000-21272 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Aug 2024 | 06 Aug 2024 | 000-21272 |
| 144 | Open Document | Open Filing | 06 Aug 2024 | |||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Mar 2024 | 15 Mar 2024 | 000-21272 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Feb 2024 | 02 Feb 2024 | 000-21272 |
| 144 | Open Document | Open Filing | 02 Feb 2024 | |||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Mar 2023 | 15 Mar 2023 | 000-21272 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 27 May 2022 | 25 May 2022 | 001-38267 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Mar 2022 | 15 Mar 2022 | 000-21272 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 23 Jun 2021 | 22 Jun 2021 | 001-38267 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 17 Jun 2021 | 15 Jun 2021 | 001-38267 |
| 4 | Open Document | Open Filing | 4 | 19 Apr 2021 | 15 Apr 2021 | 000-21272 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Jun 2020 | 22 Jun 2020 | 001-38267 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jun 2020 | 17 Jun 2020 | 001-38267 |
| 4 | Open Document | Open Filing | 4 | 18 Mar 2020 | 16 Mar 2020 | 000-21272 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Mar 2020 | 16 Mar 2020 | 001-38267 |
| 3 | Open Document | Open Filing | 3 | 04 Mar 2020 | 01 Mar 2020 | 001-38267 |
| 4 | Open Document | Open Filing | 4 | 18 Dec 2019 | 16 Dec 2019 | 000-21272 |
| 3 | Open Document | Open Filing | 3 | 18 Sep 2019 | 09 Sep 2019 | 000-21272 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Dec 2015 | 28 Dec 2015 | 000-16617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2015 | 11 May 2015 | 000-16617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2015 | 30 Apr 2015 | 000-16617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 May 2014 | 12 May 2014 | 000-16617 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 May 2013 | 06 May 2013 | 000-16617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 May 2013 | 06 May 2013 | 000-16617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Aug 2012 | 13 Aug 2012 | 000-16617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2012 | 13 May 2012 | 000-16617 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2012 | 08 May 2012 | 000-16617 |