CopperSteel HoldCo, Inc.
SEC Filing List
CIK: 0001999001
| Form | Description | Owner/Filer | Filing Agent | Date | Actions |
|---|---|---|---|---|---|
| 4 | Statement of changes in beneficial owner... | Spiegel Marilyn G | Six Flags Entertainment Corporation/new | 05/26/2026 | |
| 8-K | Current report filing | Six Flags Entertainment Corporation/new | DONNELLEY FINANCIAL SOLUTIONS /FA/ | 05/20/2026 | |
| SCHEDULE 13G/A | SHARTSIS FRIESE LLP /fa | 05/15/2026 | |||
| 4 | Statement of changes in beneficial owner... | Haddrill Richard M | Six Flags Entertainment Corporation/new | 05/14/2026 | |
| 4 | Statement of changes in beneficial owner... | Spiegel Marilyn G | Six Flags Entertainment Corporation/new | 05/14/2026 | |
| SCHEDULE 13G/A | 05/12/2026 | ||||
| 10-Q | Quarterly report pursuant to Section 13 ... | Six Flags Entertainment Corporation/new | 05/07/2026 | ||
| 8-K | Current report filing | Six Flags Entertainment Corporation/new | DONNELLEY FINANCIAL SOLUTIONS /FA/ | 05/07/2026 | |
| 8-K | Current report filing | Six Flags Entertainment Corporation/new | 05/07/2026 | ||
| SCHEDULE 13G | 04/29/2026 | ||||
| No record found. | |||||
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