| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 30 Apr 2024 | 26 Apr 2024 | 001-10948 | |
| 4 | Open Document | Open Filing | 27 Mar 2024 | 25 Mar 2024 | 001-10948 | |
| 4 | Open Document | Open Filing | 28 Apr 2023 | 26 Apr 2023 | 001-10948 | |
| 4 | Open Document | Open Filing | 12 May 2022 | 28 Apr 2022 | 001-10948 | |
| 4 | Open Document | Open Filing | 26 Apr 2021 | 22 Apr 2021 | 001-10948 | |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jan 2021 | 04 Jan 2021 | 001-07533 |
| 4 | Open Document | Open Filing | 14 May 2020 | 12 May 2020 | 001-10948 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2020 | 02 Jan 2020 | 001-07533 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 May 2019 | 07 May 2019 | 001-10948 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2019 | 02 Jan 2019 | 001-07533 |
| 4 | Open Document | Open Filing | 05 Jun 2018 | 04 Jun 2018 | 001-10948 | |
| 4 | Open Document | Open Filing | 08 May 2018 | 04 May 2018 | 001-10948 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2018 | 02 Jan 2018 | 001-07533 |
| 4 | Open Document | Open Filing | 21 Jul 2017 | 20 Jul 2017 | 001-10948 | |
| 4 | Open Document | Open Filing | 17 Mar 2017 | 15 Mar 2017 | 001-10948 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2017 | 03 Jan 2017 | 001-07533 |
| 4 | Open Document | Open Filing | 15 Jul 2016 | 13 Jul 2016 | 001-10948 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2016 | 04 Jan 2016 | 001-07533 |
| 4 | Open Document | Open Filing | 23 Jun 2015 | 19 Jun 2015 | 001-10948 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Jun 2015 | 10 Jun 2015 | 001-32230 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jan 2015 | 02 Jan 2015 | 001-07533 |
| 4 | Open Document | Open Filing | 12 May 2014 | 08 May 2014 | 001-10948 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 May 2014 | 29 Apr 2014 | 001-32230 |
| 4 | Open Document | Open Filing | 14 Mar 2014 | 14 Mar 2014 | 001-10948 | |
| 4 | Open Document | Open Filing | 10 Jan 2014 | 08 Jan 2014 | 001-10948 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2014 | 02 Jan 2014 | 001-07533 |