| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 22 Feb 2024 | 20 Feb 2024 | 001-08339 | |
| 4 | Open Document | Open Filing | 01 Feb 2024 | 30 Jan 2024 | 001-08339 | |
| 4 | Open Document | Open Filing | 22 Nov 2023 | 20 Nov 2023 | 001-08339 | |
| 4 | Open Document | Open Filing | 22 Aug 2023 | 21 Aug 2023 | 001-08339 | |
| 4 | Open Document | Open Filing | 23 May 2023 | 20 May 2023 | 001-08339 | |
| 4 | Open Document | Open Filing | 23 Feb 2023 | 21 Feb 2023 | 001-08339 | |
| 4 | Open Document | Open Filing | 30 Jan 2023 | 26 Jan 2023 | 001-08339 | |
| 4 | Open Document | Open Filing | 22 Nov 2022 | 21 Nov 2022 | 001-08339 | |
| 4 | Open Document | Open Filing | 23 Aug 2022 | 20 Aug 2022 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Jun 2022 | 07 Jun 2022 | 000-15386 |
| 4 | Open Document | Open Filing | 24 May 2022 | 20 May 2022 | 001-08339 | |
| 4 | Open Document | Open Filing | 23 Feb 2022 | 21 Feb 2022 | 001-08339 | |
| 4 | Open Document | Open Filing | 31 Jan 2022 | 27 Jan 2022 | 001-08339 | |
| 4 | Open Document | Open Filing | 23 Nov 2021 | 19 Nov 2021 | 001-08339 | |
| 4 | Open Document | Open Filing | 23 Aug 2021 | 20 Aug 2021 | 001-08339 | |
| 4 | Open Document | Open Filing | 21 May 2021 | 20 May 2021 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 May 2021 | 19 May 2021 | 000-15386 |
| 4 | Open Document | Open Filing | 12 Mar 2021 | 10 Mar 2021 | 001-08339 | |
| 4 | Open Document | Open Filing | 29 Jan 2021 | 28 Jan 2021 | 001-08339 | |
| 4 | Open Document | Open Filing | 11 Dec 2020 | 10 Dec 2020 | 001-08339 | |
| 4 | Open Document | Open Filing | 11 Sep 2020 | 10 Sep 2020 | 001-08339 | |
| 4 | Open Document | Open Filing | 12 Jun 2020 | 10 Jun 2020 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 May 2020 | 22 May 2020 | 000-15386 |
| 4 | Open Document | Open Filing | 12 Mar 2020 | 10 Mar 2020 | 001-08339 | |
| 4 | Open Document | Open Filing | 03 Feb 2020 | 30 Jan 2020 | 001-08339 | |
| 4 | Open Document | Open Filing | 12 Dec 2019 | 10 Dec 2019 | 001-08339 | |
| 4 | Open Document | Open Filing | 12 Sep 2019 | 10 Sep 2019 | 001-08339 | |
| 4 | Open Document | Open Filing | 12 Jun 2019 | 10 Jun 2019 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Jun 2019 | 30 May 2019 | 000-15386 |
| 4 | Open Document | Open Filing | 13 Mar 2019 | 11 Mar 2019 | 001-08339 | |
| 4/A | Open Document | Open Filing | 15 Feb 2019 | 28 Jan 2019 | 001-08339 | |
| 4 | Open Document | Open Filing | 30 Jan 2019 | 28 Jan 2019 | 001-08339 | |
| 4 | Open Document | Open Filing | 11 Dec 2018 | 10 Dec 2018 | 001-08339 | |
| 4 | Open Document | Open Filing | 11 Sep 2018 | 10 Sep 2018 | 001-08339 | |
| 4 | Open Document | Open Filing | 12 Jun 2018 | 11 Jun 2018 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 May 2018 | 18 May 2018 | 000-15386 |
| 4 | Open Document | Open Filing | 13 Mar 2018 | 09 Mar 2018 | 001-08339 | |
| 4 | Open Document | Open Filing | 29 Jan 2018 | 25 Jan 2018 | 001-08339 | |
| 4 | Open Document | Open Filing | 13 Dec 2017 | 11 Dec 2017 | 001-08339 | |
| 4 | Open Document | Open Filing | 13 Sep 2017 | 11 Sep 2017 | 001-08339 | |
| 4 | Open Document | Open Filing | 13 Jun 2017 | 10 Jun 2017 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 May 2017 | 24 May 2017 | 000-15386 |
| 4 | Open Document | Open Filing | 14 Mar 2017 | 10 Mar 2017 | 001-08339 | |
| 4 | Open Document | Open Filing | 27 Jan 2017 | 26 Jan 2017 | 001-08339 | |
| 4 | Open Document | Open Filing | FORM 4 | 02 Dec 2016 | 01 Dec 2016 | 000-54450 |
| 4 | Open Document | Open Filing | 30 Nov 2016 | 28 Nov 2016 | 001-08339 | |
| 3 | Open Document | Open Filing | 30 Nov 2016 | 28 Nov 2016 | 001-08339 | |
| 4/A | Open Document | Open Filing | FORM 4/A | 30 Aug 2016 | 18 May 2016 | 000-54450 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Jun 2016 | 27 May 2016 | 000-54450 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Jun 2016 | 27 May 2016 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 | 20 May 2016 | 18 May 2016 | 000-54450 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 May 2015 | 27 May 2015 | 000-54450 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 May 2015 | 27 May 2015 | 000-54450 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 May 2015 | 22 May 2015 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 May 2014 | 23 May 2014 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Feb 2014 | 07 Feb 2014 | 000-15386 |
| 3/A | Open Document | Open Filing | FORM 3/A SUBMISSION | 06 Jan 2014 | 23 Dec 2013 | 000-15386 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 02 Jan 2014 | 23 Dec 2013 | 000-15386 |