| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jan 6, 2023 | Jan 5, 2023 | 001-02451 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 6, 2022 | Jan 6, 2022 | 001-02451 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 12, 2021 | Jan 11, 2021 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 16, 2018 | May 15, 2018 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 20, 2018 | Mar 20, 2018 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 15, 2017 | Nov 14, 2017 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 16, 2017 | Aug 15, 2017 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 18, 2016 | May 17, 2016 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 17, 2016 | Mar 17, 2016 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 18, 2015 | Nov 17, 2015 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 18, 2015 | Aug 18, 2015 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 18, 2015 | Mar 18, 2015 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 12, 2014 | Nov 11, 2014 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 14, 2014 | Aug 12, 2014 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2014 | May 13, 2014 | 001-02451 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 19, 2014 | Mar 19, 2014 | 001-02451 |