| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM4-VAUGHN-120225 | 02 Dec 2025 | 28 Nov 2025 | 000-50175 |
| 4 | Open Document | Open Filing | FORM4-VAUGHN-112825 | 28 Nov 2025 | 25 Nov 2025 | 000-50175 |
| 4 | Open Document | Open Filing | FORM4-VAUGHN-030420 | 04 Mar 2020 | 04 Mar 2020 | 000-50175 |
| 4 | Open Document | Open Filing | 121917FORM4-VAUGHN | 20 Dec 2017 | 19 Dec 2017 | 000-50175 |
| 4 | Open Document | Open Filing | 120617FORM4-VAUGHN | 06 Dec 2017 | 05 Dec 2017 | 000-50175 |
| 4 | Open Document | Open Filing | VAUGHN-FORM4-070517 | 05 Jul 2017 | 30 Jun 2017 | 000-50175 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Aug 2015 | 12 Aug 2015 | 000-50175 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Dec 2014 | 10 Dec 2014 | 000-50175 |