| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 14 Aug 2025 | 12 Aug 2025 | 000-28132 | |
| 4 | Open Document | Open Filing | 22 Jul 2024 | 18 Jul 2024 | 000-28132 | |
| 4 | Open Document | Open Filing | 10 Feb 2023 | 07 Feb 2023 | 000-20728 | |
| 4 | Open Document | Open Filing | 28 Oct 2022 | 26 Oct 2022 | 000-28132 | |
| 4 | Open Document | Open Filing | 09 Jun 2022 | 01 Jun 2022 | 000-20728 | |
| 3 | Open Document | Open Filing | 10 Feb 2022 | 01 Feb 2022 | 000-21121 | |
| 4 | Open Document | Open Filing | 20 Dec 2021 | 16 Dec 2021 | 000-28132 | |
| 4 | Open Document | Open Filing | 13 Aug 2021 | 11 Aug 2021 | 000-20728 | |
| 4 | Open Document | Open Filing | 10 May 2021 | 06 May 2021 | 000-20728 | |
| 4 | Open Document | Open Filing | 17 Mar 2021 | 15 Mar 2021 | 001-09974 | |
| 4 | Open Document | Open Filing | 04 Mar 2021 | 02 Mar 2021 | 000-28132 | |
| 4 | Open Document | Open Filing | 21 Dec 2020 | 21 Dec 2020 | 000-20206 | |
| 4 | Open Document | Open Filing | 03 Dec 2020 | 01 Dec 2020 | 000-20206 | |
| 4 | Open Document | Open Filing | 01 Oct 2020 | 29 Sep 2020 | 000-20728 | |
| 4 | Open Document | Open Filing | 03 Sep 2020 | 01 Sep 2020 | 000-20206 | |
| 4 | Open Document | Open Filing | 03 Jun 2020 | 01 Jun 2020 | 000-20206 | |
| 4 | Open Document | Open Filing | 04 Mar 2020 | 02 Mar 2020 | 000-20206 | |
| 4 | Open Document | Open Filing | 04 Dec 2019 | 02 Dec 2019 | 000-20206 | |
| 4 | Open Document | Open Filing | 12 Nov 2019 | 07 Nov 2019 | 000-20728 | |
| 3 | Open Document | Open Filing | 18 Oct 2019 | 16 Oct 2019 | 000-28132 | |
| 4 | Open Document | Open Filing | 18 Oct 2019 | 16 Oct 2019 | 000-28132 | |
| 4 | Open Document | Open Filing | 05 Sep 2019 | 03 Sep 2019 | 000-20206 | |
| 4 | Open Document | Open Filing | 20 Aug 2019 | 16 Aug 2019 | 001-09974 | |
| 4 | Open Document | Open Filing | 24 Jul 2019 | 22 Jul 2019 | 001-09974 | |
| 4 | Open Document | Open Filing | 18 Jun 2019 | 14 Jun 2019 | 000-20206 | |
| 3 | Open Document | Open Filing | 14 Jun 2019 | 13 Jun 2019 | 000-20206 | |
| 4 | Open Document | Open Filing | 30 May 2019 | 28 May 2019 | 001-09974 | |
| 4 | Open Document | Open Filing | 22 May 2019 | 20 May 2019 | 001-09974 | |
| 3 | Open Document | Open Filing | 22 May 2019 | 20 May 2019 | 001-09974 | |
| 4 | Open Document | Open Filing | 10 May 2019 | 08 May 2019 | 000-20728 | |
| 4 | Open Document | Open Filing | 13 Nov 2018 | 08 Nov 2018 | 000-20728 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 May 2018 | 21 May 2018 | 000-20728 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 14 May 2018 | 10 May 2018 | 000-20728 |
| 3 | Open Document | Open Filing | KENAN/STRM | 23 Jan 2018 | 18 Jan 2018 | 000-28132 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Nov 2017 | 09 Nov 2017 | 000-20728 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Nov 2017 | 01 Nov 2017 | 000-20728 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Nov 2017 | 01 Nov 2017 | 000-20728 |
| 3 | Open Document | Open Filing | HARBERT/PRCP | 05 Jul 2016 | 28 Jun 2016 | 000-20206 |