| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | FORM 4/A | Jun 20, 2024 | May 30, 2024 | 000-22345 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 3, 2024 | May 30, 2024 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 9, 2023 | May 5, 2023 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 8, 2019 | Feb 7, 2019 | 000-22345 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 26, 2018 | Apr 26, 2018 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 28, 2017 | Apr 26, 2017 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 14, 2016 | Oct 12, 2016 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 12, 2016 | Jul 11, 2016 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 23, 2016 | May 19, 2016 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 29, 2016 | Apr 27, 2016 | 000-22345 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 25, 2016 | Apr 15, 2016 | 000-22345 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 25, 2016 | Feb 4, 2016 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 18, 2016 | Feb 15, 2016 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 8, 2016 | Feb 4, 2016 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 2, 2015 | Nov 30, 2015 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 2, 2015 | Oct 1, 2015 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 13, 2015 | Apr 29, 2015 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 29, 2014 | May 27, 2014 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 5, 2014 | Apr 30, 2014 | 000-22345 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 5, 2014 | Apr 30, 2014 | 000-22345 |