| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 4 | 03 Nov 2025 | 30 Oct 2025 | 000-22818 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Aug 2025 | 05 Aug 2025 | 001-32433 |
| 4 | Open Document | Open Filing | 4 | 12 May 2025 | 09 May 2025 | 000-22818 |
| 4 | Open Document | Open Filing | 4 | 04 Nov 2024 | 31 Oct 2024 | 000-22818 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Aug 2024 | 06 Aug 2024 | 001-32433 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Jan 2024 | 24 Jan 2024 | 001-35186 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Nov 2023 | 15 Nov 2023 | 000-22818 |
| 4 | Open Document | Open Filing | FORM 4 | 30 Oct 2023 | 26 Oct 2023 | 000-22818 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Aug 2023 | 01 Aug 2023 | 001-32433 |
| 4 | Open Document | Open Filing | 01 May 2023 | 27 Apr 2023 | 001-37523 | |
| 4 | Open Document | Open Filing | FORM 4 | 01 Feb 2023 | 30 Jan 2023 | 001-35186 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Nov 2022 | 17 Nov 2022 | 000-22818 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Aug 2022 | 02 Aug 2022 | 001-32433 |
| 4 | Open Document | Open Filing | 19 May 2022 | 17 May 2022 | 001-37523 | |
| 4 | Open Document | Open Filing | 07 Mar 2022 | 03 Mar 2022 | 001-37523 | |
| 4 | Open Document | Open Filing | FORM 4 | 18 Jan 2022 | 13 Jan 2022 | 001-35186 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Nov 2021 | 28 Oct 2021 | 000-22818 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Aug 2021 | 03 Aug 2021 | 001-32433 |
| 4 | Open Document | Open Filing | 25 May 2021 | 21 May 2021 | 001-37523 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Jan 2021 | 13 Jan 2021 | 001-35186 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Dec 2020 | 30 Nov 2020 | 001-37523 |
| 3 | Open Document | Open Filing | 01 Dec 2020 | 24 Nov 2020 | 001-37523 | |
| 4 | Open Document | Open Filing | FORM 4 | 25 Nov 2020 | 24 Nov 2020 | 000-22818 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Aug 2020 | 04 Aug 2020 | 001-32433 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 May 2020 | 04 May 2020 | 001-32433 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 May 2020 | 04 May 2020 | 001-32433 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 May 2020 | 04 May 2020 | 001-32433 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Jan 2020 | 14 Jan 2020 | 001-35186 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Nov 2019 | 19 Nov 2019 | 000-22818 |
| 4/A | Open Document | Open Filing | FORM 4/A | 24 Oct 2019 | 15 Oct 2019 | 000-19364 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Oct 2019 | 15 Oct 2019 | 000-19364 |
| 4 | Open Document | Open Filing | FORM 4 | 07 May 2019 | 11 Apr 2019 | 000-19364 |
| 4/A | Open Document | Open Filing | FORM 4/A | 12 Apr 2019 | 08 Mar 2019 | 000-19364 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Mar 2019 | 08 Mar 2019 | 000-19364 |
| 3 | Open Document | Open Filing | FORM 3 | 12 Mar 2019 | 08 Mar 2019 | 000-19364 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Mar 2019 | 08 Mar 2019 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Feb 2019 | 14 Feb 2019 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Jan 2019 | 11 Jan 2019 | 001-35186 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Jan 2019 | 07 Jan 2019 | 000-22818 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Jan 2019 | 03 Jan 2019 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Jan 2019 | 31 Dec 2018 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Apr 2018 | 02 Apr 2018 | 000-22818 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Mar 2018 | 20 Mar 2018 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Feb 2018 | 20 Feb 2018 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Feb 2018 | 12 Feb 2018 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Jan 2018 | 16 Jan 2018 | 001-35186 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Jan 2018 | 12 Jan 2018 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Jan 2018 | 03 Jan 2018 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Jan 2018 | 31 Dec 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Dec 2017 | 14 Dec 2017 | 000-28551 |
| 3 | Open Document | Open Filing | FORM 3 | 10 Oct 2017 | 27 Sep 2017 | 000-22818 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Sep 2017 | 12 Sep 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Aug 2017 | 10 Aug 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Jul 2017 | 12 Jul 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Jun 2017 | 28 Feb 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 May 2017 | 10 May 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Apr 2017 | 12 Apr 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Mar 2017 | 20 Mar 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2017 | 09 Mar 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2017 | 15 Feb 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Jan 2017 | 24 Jan 2017 | 001-35186 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Jan 2017 | 18 Jan 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jan 2017 | 04 Jan 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Jan 2017 | 02 Jan 2017 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Dec 2016 | 12 Dec 2016 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Nov 2016 | 21 Nov 2016 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Oct 2016 | 20 Oct 2016 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Sep 2016 | 20 Sep 2016 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Aug 2016 | 22 Aug 2016 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Jul 2016 | 20 Jul 2016 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Jun 2016 | 20 Jun 2016 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 May 2016 | 26 May 2016 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Mar 2016 | 20 Mar 2016 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Feb 2016 | 18 Feb 2016 | 001-35186 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Feb 2016 | 18 Feb 2016 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Jan 2016 | 31 Dec 2015 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Nov 2015 | 17 Nov 2015 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Aug 2015 | 04 Aug 2015 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Jun 2015 | 22 Jun 2015 | 001-35186 |
| 3 | Open Document | Open Filing | FORM 3 | 24 Jun 2015 | 16 Jun 2015 | 001-35186 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Jun 2015 | 10 Jun 2015 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Mar 2015 | 20 Mar 2015 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Mar 2015 | 27 Feb 2015 | 000-28551 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Jan 2015 | 02 Jan 2015 | 000-28551 |
| 4 | Open Document | Open Filing | RESTRICTED STOCK TAX LIABILITY FOR MS. ZIER. | 18 Nov 2014 | 15 Nov 2014 | 000-28551 |
| 4 | Open Document | Open Filing | STOCK PURCHASE BY MS. ZIER. | 04 Aug 2014 | 01 Aug 2014 | 000-28551 |
| 4 | Open Document | Open Filing | RESTRICTED STOCK TAX LIABILITY FOR MS. ZIER. | 16 May 2014 | 15 May 2014 | 000-28551 |
| 4 | Open Document | Open Filing | GRANT OF STOCK OPTIONS AND RESTRICTED STOCK TO MS. ZIER. | 24 Mar 2014 | 20 Mar 2014 | 000-28551 |
| 4 | Open Document | Open Filing | RESTRICTED STOCK TAX LIABILITY FOR MS. ZIER. | 19 Nov 2013 | 15 Nov 2013 | 000-28551 |
| 4 | Open Document | Open Filing | STOCK OPTION GRANT FOR MS. ZIER. | 23 May 2013 | 21 May 2013 | 000-28551 |
| 4/A | Open Document | Open Filing | AMENDMENT TO INITIAL STOCK OPTION GRANT FOR MS. ZIER. | 23 May 2013 | 15 Nov 2012 | 000-28551 |
| 4 | Open Document | Open Filing | RESTRICTED STOCK TAX LIABILITY FOR MS. ZIER. | 17 May 2013 | 15 May 2013 | 000-28551 |
| 4 | Open Document | Open Filing | GRANT OF STOCK OPTIONS AND RESTRICTED STOCK TO MS. ZIER. | 25 Mar 2013 | 21 Mar 2013 | 000-28551 |
| 3 | Open Document | Open Filing | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP FOR DAWN M. ZIER. | 21 Nov 2012 | 15 Nov 2012 | 000-28551 |
| 4 | Open Document | Open Filing | SHARES GRANTED TO DAWN M. ZIER UPON COMMENCEMENT OF EMPLOYMENT. | 21 Nov 2012 | 15 Nov 2012 | 000-28551 |