| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 21 Jul 2021 | 19 Jul 2021 | 001-08097 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 May 2021 | 30 Apr 2021 | 001-08097 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2020 | 11 May 2020 | 001-08097 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Mar 2020 | 27 Feb 2020 | 001-08097 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Feb 2020 | 26 Feb 2020 | 001-08097 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Feb 2020 | 03 Jun 2019 | 001-08097 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 Apr 2019 | 11 Apr 2019 | 001-05491 |
| 4 | Open Document | Open Filing | 4 | 11 Apr 2019 | 11 Apr 2019 | 001-08097 |
| 3 | Open Document | Open Filing | 3 | 11 Apr 2019 | 11 Apr 2019 | 001-08097 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Feb 2019 | 26 Feb 2019 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Dec 2018 | 18 Dec 2018 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jul 2018 | 03 Jul 2018 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Mar 2018 | 27 Feb 2018 | 001-05491 |
| 3 | Open Document | Open Filing | FORM 3 | 08 Jan 2018 | 01 Jan 2018 | 001-05491 |