| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Dec 2023 | 20 Dec 2023 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Jun 2022 | 21 Jun 2022 | 001-05332 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Feb 2021 | 16 Feb 2021 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Dec 2018 | 07 Dec 2018 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Feb 2018 | 09 Feb 2018 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Sep 2017 | 05 Sep 2017 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 May 2015 | 07 May 2015 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Apr 2015 | 02 Apr 2015 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Jun 2014 | 02 Jun 2014 | 001-05332 |