| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 21 Nov 2025 | 20 Nov 2025 | 000-14942 | |
| 4 | Open Document | Open Filing | 22 Nov 2024 | 20 Nov 2024 | 000-14942 | |
| 4 | Open Document | Open Filing | 19 Nov 2021 | 19 Nov 2021 | 000-14942 | |
| 4 | Open Document | Open Filing | 25 Feb 2021 | 23 Feb 2021 | 000-14942 | |
| 4 | Open Document | Open Filing | 12 Feb 2021 | 12 Feb 2021 | 000-14942 | |
| 144 | Open Document | Open Filing | NOTICE OF PROPOSED SALE OF SECURITIES | 12 Feb 2021 | ||
| 4 | Open Document | Open Filing | 28 Jan 2021 | 07 Dec 2020 | 000-14942 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Nov 2020 | 10 Nov 2020 | 000-14942 |
| 144 | Open Document | Open Filing | NOTICE OF PROPOSED SALE OF SECURITIES | 10 Nov 2020 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Feb 2018 | 12 Feb 2018 | 000-14942 |
| 5 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Oct 2016 | 30 Jun 2016 | 000-14942 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Mar 2016 | 09 Mar 2016 | 000-14942 |