HOLLYFRONTIER CORP Form SD: Specialized disclosure report (conflict minerals)
Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.
- 2021-05-28: Form SD; Description SD; Document a2020conflictmineralsrepor.htm.
- 2020-05-28: Form SD; Description SD; Document hollyfrontier-conflictmine.htm.
- 2019-05-28: Form SD; Description SD; Document hollyfrontier-conflictmine.htm.
- 2018-05-29: Form SD; Description SD; Document active_68303203x2xhollyfro.htm.
| Filed | Form | Period of report | Description | Document |
|---|---|---|---|---|
| 2021-05-28 | SD | SD | a2020conflictmineralsrepor.htm | |
| 2020-05-28 | SD | SD | hollyfrontier-conflictmine.htm | |
| 2019-05-28 | SD | SD | hollyfrontier-conflictmine.htm | |
| 2018-05-29 | SD | SD | active_68303203x2xhollyfro.htm | |
| 2017-05-25 | SD | SD | active_62196199x4xhollyfro.htm | |
| 2016-05-26 | SD | SD | hfc-2016sdcmrfinal2.htm | |
| 2015-05-29 | SD | SD | final-formsd.htm | |
| 2014-05-30 | SD | SD | formsd-final.htm |