| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Nov 2022 | 08 Nov 2022 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Aug 2022 | 08 Aug 2022 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 May 2022 | 10 May 2022 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Feb 2022 | 08 Feb 2022 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Nov 2021 | 09 Nov 2021 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Aug 2021 | 09 Aug 2021 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 May 2021 | 07 May 2021 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Feb 2021 | 09 Feb 2021 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Nov 2020 | 09 Nov 2020 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Aug 2020 | 07 Aug 2020 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 07 May 2020 | 07 May 2020 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Feb 2020 | 07 Feb 2020 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Nov 2019 | 07 Nov 2019 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Aug 2019 | 06 Aug 2019 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 May 2019 | 07 May 2019 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Feb 2019 | 07 Feb 2019 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Nov 2018 | 07 Nov 2018 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Sep 2018 | 07 Sep 2018 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Aug 2018 | 07 Aug 2018 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Jul 2018 | 09 Jul 2018 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Jun 2018 | 07 Jun 2018 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 May 2018 | 08 May 2018 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Apr 2018 | 09 Apr 2018 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Mar 2018 | 07 Mar 2018 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Feb 2018 | 07 Feb 2018 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Jan 2018 | 09 Jan 2018 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Dec 2017 | 07 Dec 2017 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Nov 2017 | 07 Nov 2017 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Oct 2017 | 09 Oct 2017 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Sep 2017 | 07 Sep 2017 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Aug 2017 | 07 Aug 2017 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Jul 2017 | 07 Jul 2017 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Jun 2017 | 07 Jun 2017 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 May 2017 | 09 May 2017 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Apr 2017 | 07 Apr 2017 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Mar 2017 | 07 Mar 2017 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Feb 2017 | 07 Feb 2017 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Jan 2017 | 09 Jan 2017 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Dec 2016 | 07 Dec 2016 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Nov 2016 | 07 Nov 2016 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Oct 2016 | 17 Oct 2016 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Sep 2016 | 15 Sep 2016 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Aug 2016 | 15 Aug 2016 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Jul 2016 | 18 Jul 2016 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Jun 2016 | 15 Jun 2016 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 20 May 2016 | 19 May 2016 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Apr 2016 | 07 Apr 2016 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Mar 2016 | 15 Mar 2016 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Feb 2016 | 16 Feb 2016 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Jan 2016 | 18 Jan 2016 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Dec 2015 | 16 Dec 2015 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Nov 2015 | 16 Nov 2015 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Oct 2015 | 15 Oct 2015 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Sep 2015 | 15 Sep 2015 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Aug 2015 | 17 Aug 2015 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Jul 2015 | 15 Jul 2015 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Jun 2015 | 15 Jun 2015 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 19 May 2015 | 15 May 2015 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Apr 2015 | 15 Apr 2015 | 000-31641 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Mar 2015 | 17 Mar 2015 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Feb 2015 | 17 Feb 2015 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Nov 2014 | 17 Nov 2014 | 000-31641 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Sep 2014 | 10 Sep 2014 | 000-31641 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 Sep 2014 | 25 Jul 2014 | 000-31641 |