| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 8, 2023 | May 4, 2023 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | May 2, 2023 | Apr 30, 2023 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 20, 2023 | Mar 16, 2023 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 10, 2023 | Feb 8, 2023 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 16, 2022 | Dec 14, 2022 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | May 9, 2022 | May 5, 2022 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | May 3, 2022 | Apr 30, 2022 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 7, 2022 | Feb 3, 2022 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 14, 2021 | Nov 23, 2021 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 3, 2021 | Jun 2, 2021 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | May 12, 2021 | May 10, 2021 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | May 10, 2021 | May 6, 2021 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | May 4, 2021 | Apr 30, 2021 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 18, 2021 | Feb 16, 2021 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 30, 2020 | Nov 25, 2020 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 12, 2020 | Nov 9, 2020 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | May 12, 2020 | May 10, 2020 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | May 6, 2020 | May 2, 2020 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 | May 4, 2020 | Apr 30, 2020 | 000-19406 |
| 4/A | Open Document | Open Filing | FORM 4/A | May 4, 2020 | Jun 22, 2018 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 10, 2020 | Feb 6, 2020 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 13, 2019 | May 10, 2019 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 6, 2019 | May 2, 2019 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 7, 2019 | Feb 6, 2019 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 13, 2018 | Nov 8, 2018 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 14, 2018 | Aug 14, 2018 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 25, 2018 | Jun 22, 2018 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 17, 2018 | May 15, 2018 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 14, 2018 | May 10, 2018 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 9, 2018 | Feb 8, 2018 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 15, 2017 | May 11, 2017 | 000-19406 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | May 16, 2016 | May 12, 2016 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 16, 2016 | May 12, 2016 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 10, 2016 | Mar 8, 2016 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 15, 2015 | Dec 15, 2015 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 16, 2015 | Nov 12, 2015 | 000-19406 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 17, 2015 | Aug 13, 2015 | 000-19406 |
| 4 | Open Document | Open Filing | HEEL - ANNUAL GRANT 5-15-15 | May 19, 2015 | May 15, 2015 | 000-19406 |
| 4 | Open Document | Open Filing | HEEL - FORM 4 INITIAL GRANTS | Sep 17, 2014 | Sep 15, 2014 | 000-19406 |
| 3 | Open Document | Open Filing | HEEL - FORM 3 | Sep 16, 2014 | Sep 15, 2014 | 000-19406 |