| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Jan 2022 | 21 Jan 2022 | 000-20827 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 24 Jan 2022 | 07 Dec 2021 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Dec 2021 | 13 Dec 2021 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Dec 2021 | 07 Dec 2021 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2021 | 09 Mar 2021 | 000-20827 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 26 Feb 2021 | 28 Jan 2021 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Feb 2021 | 22 Jan 2021 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Feb 2021 | 29 Jan 2021 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Dec 2020 | 14 Dec 2020 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Sep 2020 | 04 Sep 2020 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Sep 2020 | 28 Aug 2020 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Feb 2020 | 31 Jan 2020 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Dec 2019 | 08 Nov 2019 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Nov 2019 | 08 Nov 2019 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Nov 2019 | 07 Nov 2019 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Feb 2019 | 01 Feb 2019 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Jan 2019 | 25 Jan 2019 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Dec 2018 | 14 Dec 2018 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Jun 2018 | 08 Jun 2018 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Feb 2018 | 01 Feb 2018 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Jan 2018 | 26 Jan 2018 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Nov 2017 | 17 Nov 2017 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Nov 2017 | 21 Nov 2017 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Jun 2017 | 12 Jun 2017 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Feb 2017 | 02 Feb 2017 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Jan 2017 | 26 Jan 2017 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Nov 2016 | 18 Nov 2016 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Feb 2016 | 28 Jan 2016 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Jan 2016 | 26 Jan 2016 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Jan 2016 | 22 Jan 2016 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Dec 2015 | 30 Nov 2015 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Jan 2015 | 27 Jan 2015 | 000-20827 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Jan 2015 | 22 Jan 2015 | 000-20827 |
| 4 | Open Document | Open Filing | 28 Jan 2014 | 25 Jan 2014 | 000-20827 | |
| 4 | Open Document | Open Filing | 24 Jan 2014 | 22 Jan 2014 | 000-20827 |