| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 07 Jul 2023 | 06 Jul 2023 | 001-11476 |
| 4 | Open Document | Open Filing | 16 May 2023 | 14 May 2023 | 001-11476 | |
| 4 | Open Document | Open Filing | 16 May 2022 | 12 May 2022 | 001-11476 | |
| 4 | Open Document | Open Filing | 24 Sep 2021 | 23 Sep 2021 | 001-11476 | |
| 4 | Open Document | Open Filing | 21 Jul 2021 | 01 Jul 2021 | 001-11476 | |
| 4 | Open Document | Open Filing | CARLSON - CHANGES IN BENEFICIAL OWNERSHIP | 28 Jun 2021 | 24 Jun 2021 | 001-11476 |
| 4 | Open Document | Open Filing | CHANGES IN BENEFICIAL OWNERSHIP | 24 May 2021 | 14 May 2021 | 001-11476 |
| 4 | Open Document | Open Filing | 07 Apr 2021 | 07 Apr 2021 | 001-11476 | |
| 4 | Open Document | Open Filing | CHANGES IN BENEFICIAL OWNERSHIP | 21 Jan 2021 | 14 Jan 2021 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Oct 2020 | 02 Oct 2020 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 25 Aug 2020 | 02 Jul 2020 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Jun 2020 | 19 Jun 2020 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Apr 2020 | 31 Mar 2020 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 25 Feb 2020 | 06 Jan 2020 | 001-11476 |
| 4 | Open Document | Open Filing | 24 Feb 2020 | 02 Oct 2019 | 001-11476 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Jul 2019 | 09 Jul 2019 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 May 2019 | 20 May 2019 | 001-11476 |
| 4 | Open Document | Open Filing | 29 Apr 2019 | 31 Mar 2019 | 001-11476 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 14 Feb 2019 | 31 Dec 2018 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Oct 2018 | 30 Jun 2018 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Apr 2018 | 31 Mar 2018 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Jan 2018 | 30 Sep 2017 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Aug 2017 | 20 Aug 2017 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Jul 2017 | 31 Mar 2017 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Feb 2017 | 31 Dec 2016 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Oct 2016 | 30 Sep 2016 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Jul 2016 | 30 Jun 2016 | 001-11476 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 May 2016 | 13 May 2016 | 001-11476 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jul 2015 | 24 Jun 2015 | 001-11476 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Apr 2014 | 24 Apr 2014 | 001-11476 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Sep 2013 | 27 Sep 2013 | 001-11476 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Sep 2012 | 11 Sep 2012 | 000-53619 |
| SC 13D/A | Open Document | Open Filing | 12 Sep 2012 |