| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 - | 25 May 2021 | 25 May 2021 | 001-08931 |
| 4/A | Open Document | Open Filing | FORM 4/A - | 28 Dec 2020 | 27 Nov 2020 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | 01 Dec 2020 | 27 Nov 2020 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | 05 Oct 2020 | 01 Oct 2020 | 001-08931 |
| 4/A | Open Document | Open Filing | FORM 4/A - | 12 Dec 2019 | 01 Oct 2019 | 001-08931 |
| 4/A | Open Document | Open Filing | FORM 4/A - | 06 Dec 2019 | 29 Nov 2019 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | 03 Dec 2019 | 29 Nov 2019 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | 03 Oct 2019 | 01 Oct 2019 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | 26 Nov 2018 | 21 Nov 2018 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | 03 Oct 2018 | 01 Oct 2018 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | 19 Mar 2018 | 19 Mar 2018 | 001-08931 |
| 3 | Open Document | Open Filing | FORM 3 - | 19 Mar 2018 | 19 Mar 2018 | 001-08931 |