| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Aug 2022 | 26 Aug 2022 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Aug 2021 | 27 Aug 2021 | 000-26926 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 26 Mar 2021 | 16 Sep 2020 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Mar 2021 | 11 Mar 2021 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Nov 2020 | 19 Nov 2020 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Sep 2020 | 16 Sep 2020 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Mar 2020 | 12 Mar 2020 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Feb 2020 | 11 Feb 2020 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Nov 2019 | 15 Nov 2019 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 May 2019 | 14 May 2019 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Dec 2018 | 03 Dec 2018 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Nov 2018 | 13 Nov 2018 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Dec 2017 | 08 Dec 2017 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2017 | 17 Feb 2017 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Dec 2016 | 19 Dec 2016 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Dec 2016 | 12 Dec 2016 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Dec 2016 | 02 Dec 2016 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Dec 2015 | 04 Dec 2015 | 000-26926 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Feb 2015 | 03 Feb 2015 | 000-26926 |
| 4 | Open Document | Open Filing | 09 Dec 2014 | 05 Dec 2014 | 000-26926 | |
| 4 | Open Document | Open Filing | 05 Dec 2014 | 05 Dec 2014 | 000-26926 |