| 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 | 27 May 2022 | 25 May 2022 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 May 2020 | 20 May 2020 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 May 2019 | 22 May 2019 | 001-05332 |
| 4 | Open Document | Open Filing | FORM 4 | 23 May 2018 | 23 May 2018 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Aug 2017 | 14 Aug 2017 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 May 2017 | 24 May 2017 | 001-05332 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Jan 2017 | 09 Jan 2017 | 033-36383 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jan 2017 | 03 Jan 2017 | 033-36383 |
| 4 | Open Document | Open Filing | FORM 4 - | 07 Sep 2016 | 02 Sep 2016 | 001-05415 |
| 3 | Open Document | Open Filing | FORM 3 - | 07 Sep 2016 | 02 Sep 2016 | 001-05415 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 May 2016 | 25 May 2016 | 001-05332 |
| 4/A | Open Document | Open Filing | FORM 4/A | 29 Mar 2016 | 24 Mar 2016 | 033-36383 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Mar 2016 | 24 Mar 2016 | 033-36383 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Mar 2016 | 24 Mar 2016 | 033-36383 |
| 3 | Open Document | Open Filing | FORM 3 | 19 Feb 2016 | 08 Feb 2016 | 033-36383 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 May 2015 | 20 May 2015 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 May 2014 | 21 May 2014 | 001-05332 |