| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 07 Oct 2021 | 05 Oct 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Sep 2021 | 24 Sep 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Aug 2021 | 04 Aug 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Feb 2021 | 29 Jan 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Aug 2020 | 17 Aug 2020 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Feb 2020 | 31 Jan 2020 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jun 2019 | 03 Jun 2019 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Feb 2019 | 31 Jan 2019 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Aug 2018 | 31 Jul 2018 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Jun 2018 | 14 Jun 2018 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Jun 2018 | 12 Jun 2018 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Jun 2018 | 06 Jun 2018 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jun 2018 | 01 Jun 2018 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 31 May 2018 | 29 May 2018 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 23 May 2018 | 21 May 2018 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 16 May 2018 | 14 May 2018 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | 08 May 2018 | 04 May 2018 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Feb 2018 | 31 Jan 2018 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Oct 2017 | 24 Oct 2017 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Oct 2017 | 11 Oct 2017 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Oct 2017 | 03 Oct 2017 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Sep 2017 | 20 Sep 2017 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Jun 2017 | 07 Jun 2017 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2017 | 16 May 2017 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Apr 2017 | 25 Apr 2017 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Mar 2017 | 16 Mar 2017 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Feb 2017 | 31 Jan 2017 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2016 | 16 May 2016 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Feb 2016 | 29 Jan 2016 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Aug 2015 | 31 Jul 2015 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 May 2015 | 15 May 2015 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2015 | 14 May 2015 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 May 2015 | 13 May 2015 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Apr 2015 | 09 Apr 2015 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Feb 2015 | 30 Jan 2015 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Sep 2014 | 19 Sep 2014 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Aug 2014 | 31 Jul 2014 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Feb 2014 | 31 Jan 2014 | 000-26427 |