| 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 | 13 Sep 2023 | 12 Sep 2023 | 000-07928 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 15 Aug 2023 | 14 Aug 2023 | 000-07928 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 31 Jul 2023 | 27 Jul 2023 | 000-07928 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 14 Jun 2023 | 13 Jun 2023 | 000-07928 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 12 Jan 2023 | 11 Jan 2023 | 000-07928 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 13 Sep 2022 | 12 Sep 2022 | 000-07928 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 16 May 2022 | 05 May 2022 | 000-07928 |
| 3 | Open Document | Open Filing | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | 13 May 2022 | 05 May 2022 | 000-07928 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Dec 2020 | 17 Dec 2020 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Nov 2020 | 19 Nov 2020 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Nov 2020 | 17 Nov 2020 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Mar 2020 | 03 Mar 2020 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Dec 2019 | 19 Dec 2019 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Nov 2019 | 15 Nov 2019 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Apr 2019 | 01 Apr 2019 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Dec 2018 | 17 Dec 2018 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Nov 2018 | 17 Nov 2018 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Jun 2018 | 04 May 2018 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Mar 2018 | 15 Mar 2018 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Dec 2017 | 17 Dec 2017 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Nov 2017 | 17 Nov 2017 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Nov 2017 | 10 Nov 2017 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Aug 2017 | 14 Aug 2017 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Apr 2017 | 26 Apr 2017 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Dec 2016 | 17 Dec 2016 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Nov 2016 | 17 Nov 2016 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Nov 2016 | 09 Nov 2016 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Jul 2016 | 30 Jun 2016 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Apr 2016 | 26 Apr 2016 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Dec 2015 | 17 Dec 2015 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Dec 2015 | 03 Dec 2015 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Nov 2015 | 17 Nov 2015 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Nov 2015 | 10 Nov 2015 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Jun 2015 | 29 May 2015 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Apr 2015 | 27 Apr 2015 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Feb 2015 | 11 Feb 2015 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Dec 2014 | 10 Dec 2014 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Nov 2014 | 17 Nov 2014 | 000-21767 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 May 2014 | 27 May 2014 | 000-21767 |