| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Aug 2024 | 19 Aug 2024 | 001-32587 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 29 Sep 2023 | 28 Sep 2023 | 001-32587 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Aug 2023 | 15 Aug 2023 | 001-32587 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 Mar 2023 | 23 Mar 2023 | 001-32587 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Nov 2022 | 18 Nov 2022 | 001-32587 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Sep 2022 | 29 Sep 2022 | 001-32587 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Jun 2022 | 15 Jun 2022 | 001-32587 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 25 May 2022 | 24 May 2022 | 001-32587 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Feb 2022 | 25 Jan 2022 | 001-32587 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Jan 2022 | 25 Jan 2022 | 001-32587 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Dec 2021 | 14 Dec 2021 | 001-32587 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Nov 2021 | 19 Nov 2021 | 001-32587 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Sep 2021 | 23 Sep 2021 | 001-32587 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Nov 2020 | 13 Nov 2020 | 001-32587 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Oct 2020 | 24 Sep 2020 | 001-32587 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Sep 2020 | 24 Sep 2020 | 001-32587 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Jun 2020 | 25 Jun 2020 | 001-32587 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2019 | 02 Jan 2019 | 001-32587 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Oct 2017 | 13 Oct 2017 | 001-32587 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Aug 2017 | 22 Aug 2017 | 001-32587 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 May 2017 | 04 May 2017 | 001-32587 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 08 May 2017 | 04 May 2017 | 001-32587 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2015 | 04 Dec 2015 | 000-23776 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2015 | 19 May 2015 | 000-23776 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Feb 2015 | 09 Feb 2015 | 000-23776 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jun 2014 | 04 Jun 2014 | 000-23776 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Mar 2014 | 04 Mar 2014 | 000-23776 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2013 | 17 May 2013 | 000-23776 |
| 4 | Open Document | Open Filing | FEBRUARY 2013 OPTION AWARD | 04 Mar 2013 | 28 Feb 2013 | 000-23776 |
| 4 | Open Document | Open Filing | OPTION AWARD | 22 Jan 2013 | 18 Jan 2013 | 000-23776 |
| 4 | Open Document | Open Filing | FORM4-STOCKPURCHASE | 17 Sep 2012 | 17 Sep 2012 | 000-23776 |
| 4 | Open Document | Open Filing | FORM4-STOCKPURCHASE | 11 Jun 2012 | 08 Jun 2012 | 000-23776 |
| 4 | Open Document | Open Filing | FORM4-STOCKPURCHASE | 30 May 2012 | 29 May 2012 | 000-23776 |
| 4 | Open Document | Open Filing | MAY 2012 OPTION AWARD | 17 May 2012 | 15 May 2012 | 000-23776 |
| 5 | Open Document | Open Filing | SEPT. 2011 OPTION AWARD | 06 Feb 2012 | 31 Dec 2011 | 000-23776 |
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | 30 Jan 2012 |