| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 22 May 2025 | 21 May 2025 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2025 | 01 May 2025 | 001-07685 |
| 4 | Open Document | Open Filing | 4 | 24 May 2024 | 22 May 2024 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2024 | 01 May 2024 | 001-07685 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2023 | 17 May 2023 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2023 | 01 May 2023 | 001-07685 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 May 2022 | 18 May 2022 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2022 | 01 May 2022 | 001-07685 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 27 May 2021 | 19 May 2021 | 001-16483 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 May 2021 | 19 May 2021 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2021 | 01 May 2021 | 001-07685 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Dec 2020 | 08 Dec 2020 | 001-16483 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 May 2020 | 13 May 2020 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2020 | 01 May 2020 | 001-07685 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 May 2019 | 15 May 2019 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2019 | 01 May 2019 | 001-07685 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2018 | 16 May 2018 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2018 | 01 May 2018 | 001-07685 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Aug 2017 | 03 Aug 2017 | 001-07685 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2017 | 17 May 2017 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2017 | 01 May 2017 | 001-07685 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Mar 2017 | 27 Feb 2017 | 001-07685 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Feb 2017 | 16 Feb 2017 | 001-07685 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Nov 2016 | 23 Nov 2016 | 001-07685 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 May 2016 | 18 May 2016 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2016 | 29 Apr 2016 | 001-07685 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Nov 2015 | 02 Nov 2015 | 001-07685 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 May 2015 | 20 May 2015 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2015 | 01 May 2015 | 001-07685 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Apr 2015 | 26 Apr 2015 | 001-07685 |
| 4 | Open Document | Open Filing | SIEWERT FORM 4 | 22 May 2014 | 21 May 2014 | 001-16483 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2014 | 01 May 2014 | 001-07685 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2014 | 26 Apr 2014 | 001-07685 |