| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 05 Jan 2022 | 03 Jan 2022 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Sep 2021 | 30 Aug 2021 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jan 2021 | 04 Jan 2021 | 000-24657 |
| 4/A | Open Document | Open Filing | FORM 4/A | 07 Jan 2020 | 02 Jan 2020 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jan 2020 | 02 Jan 2020 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Jun 2019 | 12 Jun 2019 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Jan 2019 | 02 Jan 2019 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Jan 2018 | 02 Jan 2018 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Aug 2017 | 10 Aug 2017 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jan 2017 | 03 Jan 2017 | 000-24657 |
| 4/A | Open Document | Open Filing | FORM 4/A | 30 Jun 2016 | 22 Jun 2016 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Jun 2016 | 22 Jun 2016 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Jan 2016 | 21 Dec 2015 | 000-24657 |
| 4/A | Open Document | Open Filing | FORM 4/A | 08 Dec 2014 | 04 Dec 2014 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Dec 2014 | 04 Dec 2014 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Nov 2014 | 29 Oct 2014 | 000-24657 |
| 3 | Open Document | Open Filing | FORM 3 | 06 Nov 2014 | 28 Oct 2014 | 000-24657 |