| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 09 May 2025 | 09 May 2025 | 000-16244 | |
| 4 | Open Document | Open Filing | 10 May 2024 | 10 May 2024 | 000-16244 | |
| 4 | Open Document | Open Filing | 15 May 2023 | 12 May 2023 | 000-16244 | |
| 4 | Open Document | Open Filing | 17 May 2022 | 13 May 2022 | 000-16244 | |
| 4 | Open Document | Open Filing | FORM 4 - | 10 May 2021 | 07 May 2021 | 000-16244 |
| 4 | Open Document | Open Filing | 19 Oct 2020 | 15 Oct 2020 | 001-39317 | |
| 4 | Open Document | Open Filing | 14 Sep 2020 | 10 Sep 2020 | 001-39317 | |
| 4 | Open Document | Open Filing | FORM 4 - | 08 May 2020 | 08 May 2020 | 000-16244 |
| 4 | Open Document | Open Filing | 10 Mar 2020 | 06 Mar 2020 | 000-30419 | |
| 4 | Open Document | Open Filing | 06 Mar 2020 | 04 Mar 2020 | 000-30419 | |
| 4 | Open Document | Open Filing | 04 Mar 2020 | 02 Mar 2020 | 000-30419 | |
| 4 | Open Document | Open Filing | 13 Feb 2020 | 03 Dec 2019 | 000-30419 | |
| 4 | Open Document | Open Filing | 07 Aug 2019 | 05 Aug 2019 | 000-30419 | |
| 4 | Open Document | Open Filing | FORM 4 - | 08 May 2019 | 06 May 2019 | 000-16244 |
| 4 | Open Document | Open Filing | 08 Mar 2019 | 06 Mar 2019 | 000-30419 | |
| 4 | Open Document | Open Filing | 06 Mar 2019 | 04 Mar 2019 | 000-30419 | |
| 4 | Open Document | Open Filing | 03 Aug 2018 | 01 Aug 2018 | 000-30419 | |
| 4 | Open Document | Open Filing | 25 May 2018 | 23 May 2018 | 000-30419 | |
| 4 | Open Document | Open Filing | FORM 4 - | 04 May 2018 | 04 May 2018 | 000-16244 |
| 4 | Open Document | Open Filing | 09 Mar 2018 | 07 Mar 2018 | 000-30419 | |
| 4 | Open Document | Open Filing | 07 Mar 2018 | 05 Mar 2018 | 000-30419 | |
| 4 | Open Document | Open Filing | 06 Mar 2018 | 02 Mar 2018 | 000-30419 | |
| 4 | Open Document | Open Filing | 18 Oct 2017 | 16 Oct 2017 | 000-30419 | |
| 4 | Open Document | Open Filing | 09 Aug 2017 | 07 Aug 2017 | 000-30419 | |
| 4/A | Open Document | Open Filing | FORM 4/A - | 19 May 2017 | 05 May 2017 | 000-16244 |
| 4 | Open Document | Open Filing | FORM 4 - | 09 May 2017 | 05 May 2017 | 000-16244 |
| 4 | Open Document | Open Filing | 09 Mar 2017 | 07 Mar 2017 | 000-30419 | |
| 4 | Open Document | Open Filing | 08 Mar 2017 | 06 Mar 2017 | 000-30419 | |
| 4 | Open Document | Open Filing | 06 Mar 2017 | 02 Mar 2017 | 000-30419 | |
| 4 | Open Document | Open Filing | 22 Dec 2016 | 21 Dec 2016 | 000-30419 | |
| 4 | Open Document | Open Filing | 10 Aug 2016 | 08 Aug 2016 | 000-30419 | |
| 4 | Open Document | Open Filing | FORM 4 - | 06 May 2016 | 06 May 2016 | 000-16244 |
| 4 | Open Document | Open Filing | 29 Mar 2016 | 25 Mar 2016 | 000-30419 | |
| 4 | Open Document | Open Filing | 09 Mar 2016 | 07 Mar 2016 | 000-30419 | |
| 4 | Open Document | Open Filing | 04 Mar 2016 | 02 Mar 2016 | 000-30419 | |
| 4 | Open Document | Open Filing | 16 Feb 2016 | 11 Feb 2016 | 000-30419 | |
| 4 | Open Document | Open Filing | FORM 4 - | 15 May 2015 | 14 May 2015 | 000-16244 |
| 4 | Open Document | Open Filing | 27 Mar 2015 | 25 Mar 2015 | 000-30419 | |
| 4 | Open Document | Open Filing | 09 Mar 2015 | 05 Mar 2015 | 000-30419 | |
| 4 | Open Document | Open Filing | 05 Mar 2015 | 03 Mar 2015 | 000-30419 | |
| 4 | Open Document | Open Filing | 04 Mar 2015 | 02 Mar 2015 | 000-30419 | |
| 4 | Open Document | Open Filing | 03 Mar 2015 | 27 Feb 2015 | 000-30419 | |
| 4 | Open Document | Open Filing | 03 Nov 2014 | 30 Oct 2014 | 000-30419 | |
| 4 | Open Document | Open Filing | 04 Aug 2014 | 31 Jul 2014 | 000-30419 | |
| 4 | Open Document | Open Filing | FORM 4 - | 09 May 2014 | 07 May 2014 | 000-16244 |
| 4 | Open Document | Open Filing | 05 May 2014 | 01 May 2014 | 000-30419 | |
| 4 | Open Document | Open Filing | 11 Apr 2014 | 09 Apr 2014 | 000-30419 | |
| 4 | Open Document | Open Filing | 27 Mar 2014 | 25 Mar 2014 | 000-30419 | |
| 4 | Open Document | Open Filing | 14 Mar 2014 | 12 Mar 2014 | 000-30419 | |
| 4 | Open Document | Open Filing | 10 Mar 2014 | 03 Mar 2014 | 000-30419 | |
| 4 | Open Document | Open Filing | 07 Mar 2014 | 05 Mar 2014 | 000-30419 | |
| 4 | Open Document | Open Filing | 25 Feb 2014 | 21 Feb 2014 | 000-30419 |