| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 05 Apr 2024 | 01 Apr 2024 | 000-23575 |
| 4 | Open Document | Open Filing | 15 Dec 2023 | 06 Dec 2023 | 000-23575 | |
| 4 | Open Document | Open Filing | 16 Nov 2023 | 14 Nov 2023 | 000-23575 | |
| 4 | Open Document | Open Filing | 18 May 2023 | 16 May 2023 | 000-23575 | |
| 4 | Open Document | Open Filing | 10 May 2023 | 05 May 2023 | 000-23575 | |
| 4 | Open Document | Open Filing | FORM 4 | 02 Feb 2023 | 31 Jan 2023 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Jan 2023 | 05 Dec 2022 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Nov 2021 | 18 Nov 2021 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Nov 2021 | 19 Nov 2021 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Sep 2021 | 20 Sep 2021 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Sep 2021 | 17 Sep 2021 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Sep 2021 | 14 Sep 2021 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Aug 2021 | 25 Aug 2021 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Aug 2021 | 18 Aug 2021 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Mar 2021 | 03 Mar 2021 | 000-23575 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 26 May 2020 | ||
| 4 | Open Document | Open Filing | FORM 4 | 30 Apr 2020 | 29 Apr 2020 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Sep 2019 | 16 Sep 2019 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Sep 2019 | 11 Sep 2019 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Aug 2019 | 21 Aug 2019 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Jun 2019 | 11 Jun 2019 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Feb 2019 | 19 Feb 2019 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Dec 2018 | 11 Dec 2018 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Dec 2018 | 03 Dec 2018 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Oct 2018 | 25 Oct 2018 | 000-23575 |
| 4/A | Open Document | Open Filing | FORM 4/A | 07 Sep 2018 | 06 Sep 2018 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Sep 2018 | 06 Sep 2018 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Nov 2017 | 27 Nov 2017 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Aug 2017 | 24 Aug 2017 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Aug 2017 | 18 Aug 2017 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jun 2017 | 02 Jun 2017 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Dec 2016 | 13 Dec 2016 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Nov 2016 | 04 Nov 2016 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Jun 2016 | 01 Jun 2016 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Mar 2016 | 07 Mar 2016 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Sep 2015 | 09 Sep 2015 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Aug 2015 | 26 Aug 2015 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 11 May 2015 | 08 May 2015 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Apr 2015 | 23 Apr 2015 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Mar 2015 | 12 Mar 2015 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Feb 2015 | 25 Feb 2015 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Nov 2014 | 20 Nov 2014 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Sep 2014 | 08 Sep 2014 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Aug 2014 | 08 Aug 2014 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Jun 2014 | 10 Jun 2014 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jun 2014 | 06 Jun 2014 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 09 May 2014 | 08 May 2014 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Feb 2014 | 27 Feb 2014 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Feb 2014 | 12 Feb 2014 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Feb 2014 | 10 Feb 2014 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Feb 2014 | 03 Feb 2014 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Dec 2013 | 20 Dec 2013 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Dec 2013 | 12 Dec 2013 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Jun 2013 | 26 Jun 2013 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Mar 2013 | 15 Mar 2013 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Mar 2013 | 14 Mar 2013 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Mar 2013 | 07 Mar 2013 | 000-23575 |
| 4/A | Open Document | Open Filing | FORM 4/A | 28 Feb 2013 | 26 Dec 2012 | 000-23575 |
| 4/A | Open Document | Open Filing | FORM 4A | 28 Feb 2013 | 13 Dec 2012 | 000-23575 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 28 Feb 2013 | ||
| 4 | Open Document | Open Filing | FORM 4 | 28 Dec 2012 | 26 Dec 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Dec 2012 | 13 Dec 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Aug 2012 | 06 Aug 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Jun 2012 | 15 Jun 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Jun 2012 | 12 Jun 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 31 May 2012 | 30 May 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 22 May 2012 | 21 May 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 08 May 2012 | 07 May 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Mar 2012 | 07 Mar 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Mar 2012 | 07 Mar 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Feb 2012 | 22 Feb 2012 | 000-23575 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Feb 2012 | 09 Feb 2012 | 000-23575 |