Six Flags Entertainment Corp/OLD SEC filings SIX
Six Flags Entertainment Corp/OLD has 1,001 filings in SEC EDGAR's recent list, going back to Jul 13, 2011. Its latest annual report, Form 10-K, was filed on Feb 29, 2024 for the period ended Dec 31, 2023. The latest quarterly report (Form 10-Q) was filed on May 9, 2024, covering the quarter ended Mar 31, 2024. The most recent current report (Form 8-K) was filed on Jul 1, 2024 (material agreement, agreement ended, acquisition or sale of assets, listing notice, change to shareholder rights, regulation fd disclosure, other events). The company's fiscal year ends on December 29.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | May 22, 2024 | May 21, 2024 |
| 144 | Notice of proposed sale | May 21, 2024 | — |
| 4 | Insider transaction | May 9, 2024 | May 8, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 8, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 8, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 8, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 8, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2024 | — |
| 4 | Insider transaction | Dec 26, 2023 | Dec 20, 2023 |
| 4 | Insider transaction | Dec 22, 2023 | Dec 20, 2023 |
| 4 | Insider transaction | Dec 22, 2023 | Dec 20, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 15, 2023 | — |
| 4 | Insider transaction | Sep 21, 2023 | Sep 20, 2023 |
| 144 | Notice of proposed sale | Sep 20, 2023 | — |
| 4 | Insider transaction | Sep 11, 2023 | Sep 8, 2023 |
| 144 | Notice of proposed sale | Sep 8, 2023 | — |
| 4 | Insider transaction | Aug 15, 2023 | Aug 11, 2023 |
| 4 | Insider transaction | Jun 14, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jun 12, 2023 | Jun 9, 2023 |
| 4 | Insider transaction | Jun 2, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | May 30, 2023 | May 25, 2023 |
| 4 | Insider transaction | May 16, 2023 | May 12, 2023 |
| 4 | Insider transaction | May 12, 2023 | May 10, 2023 |
| 4 | Insider transaction | May 12, 2023 | May 10, 2023 |
| 4 | Insider transaction | May 12, 2023 | May 10, 2023 |
| 4 | Insider transaction | May 12, 2023 | May 10, 2023 |
| 4 | Insider transaction | May 12, 2023 | May 10, 2023 |
| 4 | Insider transaction | May 11, 2023 | May 10, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Mar 8, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Mar 8, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Mar 8, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 4 | Insider transaction | Feb 2, 2023 | Jan 31, 2023 |
| 3 | Initial insider ownership | Feb 2, 2023 | Jan 31, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2023 | — |
| 4 | Insider transaction | Dec 16, 2022 | Dec 14, 2022 |
| 4 | Insider transaction | Dec 12, 2022 | Dec 8, 2022 |
| 4 | Insider transaction | Dec 8, 2022 | Dec 6, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 18, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 18, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 18, 2022 |
| SC 13G | Ownership over 5% (passive) | Nov 21, 2022 | — |
| 4 | Insider transaction | Nov 14, 2022 | Nov 11, 2022 |
| 4 | Insider transaction | Nov 14, 2022 | Nov 11, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 14, 2022 | — |
| 4 | Insider transaction | Sep 21, 2022 | Sep 19, 2022 |
| 3 | Initial insider ownership | Sep 21, 2022 | Sep 19, 2022 |
| 4 | Insider transaction | Sep 15, 2022 | Sep 13, 2022 |
| 4 | Insider transaction | Sep 14, 2022 | Sep 12, 2022 |
| 4 | Insider transaction | Sep 14, 2022 | Sep 12, 2022 |
| 4 | Insider transaction | Sep 8, 2022 | Sep 6, 2022 |
| 4 | Insider transaction | Sep 8, 2022 | Sep 6, 2022 |
| 4 | Insider transaction | Sep 8, 2022 | Sep 6, 2022 |
| 4 | Insider transaction | Aug 23, 2022 | Aug 19, 2022 |
| 4 | Insider transaction | Aug 23, 2022 | Aug 19, 2022 |
| 4 | Insider transaction | Aug 15, 2022 | Aug 12, 2022 |
| 4 | Insider transaction | Aug 15, 2022 | Aug 12, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 15, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Aug 9, 2022 | — |
| 4 | Insider transaction | Aug 3, 2022 | Aug 1, 2022 |
| 3 | Initial insider ownership | Aug 3, 2022 | Aug 1, 2022 |
| 4 | Insider transaction | Jun 16, 2022 | Jun 14, 2022 |
| 3 | Initial insider ownership | Jun 14, 2022 | Jun 13, 2022 |
| 4 | Insider transaction | Jun 14, 2022 | Jun 13, 2022 |
| 4 | Insider transaction | Jun 14, 2022 | Jun 10, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Jun 9, 2022 | — |
| 4 | Insider transaction | Jun 2, 2022 | Jun 1, 2022 |
| 3 | Initial insider ownership | Jun 2, 2022 | Jun 1, 2022 |
| 4 | Insider transaction | May 31, 2022 | May 26, 2022 |
| 4 | Insider transaction | May 31, 2022 | May 26, 2022 |
| 4 | Insider transaction | May 17, 2022 | May 13, 2022 |
| 4 | Insider transaction | May 17, 2022 | May 13, 2022 |
| 4 | Insider transaction | May 13, 2022 | May 11, 2022 |
| 4 | Insider transaction | May 13, 2022 | May 13, 2022 |
| 4 | Insider transaction | May 13, 2022 | May 13, 2022 |
| 4 | Insider transaction | May 13, 2022 | May 11, 2022 |
| 4 | Insider transaction | May 13, 2022 | May 13, 2022 |
| 4 | Insider transaction | May 9, 2022 | May 6, 2022 |
| 4 | Insider transaction | May 9, 2022 | May 6, 2022 |
| 3 | Initial insider ownership | Apr 1, 2022 | Mar 28, 2022 |
| 4 | Insider transaction | Mar 10, 2022 | Mar 8, 2022 |
| 3 | Initial insider ownership | Mar 4, 2022 | Feb 25, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2022 | — |
| 4 | Insider transaction | Dec 16, 2021 | Dec 14, 2021 |
| 4 | Insider transaction | Dec 15, 2021 | Dec 13, 2021 |
| 4 | Insider transaction | Dec 15, 2021 | Dec 13, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 15, 2021 | — |
| 4 | Insider transaction | Dec 13, 2021 | Dec 12, 2021 |
| 4 | Insider transaction | Dec 13, 2021 | Dec 10, 2021 |
| 4 | Insider transaction | Dec 6, 2021 | Dec 3, 2021 |
| 4 | Insider transaction | Dec 2, 2021 | Nov 30, 2021 |
| 4 | Insider transaction | Nov 30, 2021 | Nov 26, 2021 |
| 4 | Insider transaction | Nov 30, 2021 | Nov 30, 2021 |
| 3 | Initial insider ownership | Nov 30, 2021 | Nov 29, 2021 |
| 4 | Insider transaction | Nov 23, 2021 | Nov 19, 2021 |
| 4 | Insider transaction | Nov 22, 2021 | Nov 18, 2021 |
| 4 | Insider transaction | Nov 18, 2021 | Nov 16, 2021 |
| 4 | Insider transaction | Nov 16, 2021 | Nov 14, 2021 |
| 4 | Insider transaction | Nov 16, 2021 | Nov 15, 2021 |
| 4 | Insider transaction | Sep 7, 2021 | Sep 3, 2021 |
| 4 | Insider transaction | Sep 1, 2021 | Aug 30, 2021 |
| 4 | Insider transaction | Aug 23, 2021 | Aug 19, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 23, 2021 | — |
| 4 | Insider transaction | Aug 20, 2021 | Aug 19, 2021 |
| 4 | Insider transaction | Aug 3, 2021 | Aug 2, 2021 |
| 4 | Insider transaction | May 10, 2021 | May 6, 2021 |
| 4 | Insider transaction | May 10, 2021 | May 6, 2021 |
| 4 | Insider transaction | May 10, 2021 | May 6, 2021 |
| 4 | Insider transaction | May 7, 2021 | May 5, 2021 |
| 4 | Insider transaction | May 7, 2021 | May 5, 2021 |
| 4 | Insider transaction | May 7, 2021 | May 5, 2021 |
| 4 | Insider transaction | May 7, 2021 | May 5, 2021 |
| 3 | Initial insider ownership | May 7, 2021 | May 5, 2021 |
| 4 | Insider transaction | May 7, 2021 | May 5, 2021 |
| 4 | Insider transaction | May 7, 2021 | May 5, 2021 |
| 4 | Insider transaction | Mar 16, 2021 | Mar 15, 2021 |
| 4/A | Form 4/a - | Mar 12, 2021 | Mar 8, 2021 |
| 4 | Insider transaction | Mar 10, 2021 | Mar 8, 2021 |
| 4 | Insider transaction | Mar 10, 2021 | Mar 8, 2021 |
| 4 | Insider transaction | Mar 10, 2021 | Mar 8, 2021 |
| 4 | Insider transaction | Mar 10, 2021 | Mar 8, 2021 |
| 4 | Insider transaction | Mar 10, 2021 | Mar 8, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2021 | — |
| 4 | Insider transaction | Feb 2, 2021 | Jan 29, 2021 |
| 4 | Insider transaction | Feb 2, 2021 | Jan 29, 2021 |
| 4 | Insider transaction | Feb 2, 2021 | Jan 29, 2021 |
| 4 | Insider transaction | Feb 2, 2021 | Jan 29, 2021 |
| 4 | Insider transaction | Feb 2, 2021 | Jan 29, 2021 |
| 5 | Annual insider ownership | Feb 2, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Feb 2, 2021 | Jan 29, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2021 | — |
| 4 | Insider transaction | Nov 25, 2020 | Nov 23, 2020 |
| 4 | Insider transaction | Nov 20, 2020 | Nov 18, 2020 |
| 4 | Insider transaction | Nov 12, 2020 | Oct 8, 2020 |
| 4 | Insider transaction | Oct 6, 2020 | Oct 2, 2020 |
| 4 | Insider transaction | Oct 6, 2020 | Oct 2, 2020 |
| 4 | Insider transaction | Sep 8, 2020 | Sep 4, 2020 |
| 4 | Insider transaction | Sep 8, 2020 | Sep 4, 2020 |
| 4 | Insider transaction | Sep 1, 2020 | Aug 30, 2020 |
| 4 | Insider transaction | Sep 1, 2020 | Aug 30, 2020 |
| 4 | Insider transaction | Sep 1, 2020 | Aug 30, 2020 |
| 4 | Insider transaction | Aug 28, 2020 | Aug 27, 2020 |
| 4 | Insider transaction | Aug 28, 2020 | Aug 27, 2020 |
| 4 | Insider transaction | Aug 26, 2020 | Aug 24, 2020 |
| 4 | Insider transaction | Aug 26, 2020 | Aug 24, 2020 |
| 4 | Insider transaction | Aug 26, 2020 | Aug 24, 2020 |
| 4 | Insider transaction | Aug 7, 2020 | Aug 5, 2020 |
| 4 | Insider transaction | Aug 7, 2020 | Aug 5, 2020 |
| 3 | Initial insider ownership | Aug 7, 2020 | Aug 5, 2020 |
| 3 | Initial insider ownership | Aug 7, 2020 | Aug 5, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Aug 7, 2020 | — |
| 4 | Insider transaction | Jul 7, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jul 1, 2020 |
| 3 | Initial insider ownership | Jul 2, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | May 13, 2020 | May 11, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | Apr 3, 2020 | Apr 1, 2020 |
| 4 | Insider transaction | Mar 19, 2020 | Mar 17, 2020 |
| 4 | Insider transaction | Mar 11, 2020 | Mar 9, 2020 |
| 3 | Initial insider ownership | Mar 9, 2020 | Mar 9, 2020 |
| 4 | Insider transaction | Mar 5, 2020 | Mar 3, 2020 |
| 4 | Insider transaction | Mar 2, 2020 | Feb 27, 2020 |
| 4 | Insider transaction | Feb 27, 2020 | Feb 27, 2020 |
| 4 | Insider transaction | Feb 26, 2020 | Feb 24, 2020 |
| 4 | Insider transaction | Feb 26, 2020 | Feb 24, 2020 |
| 4 | Insider transaction | Feb 26, 2020 | Feb 24, 2020 |
| 3 | Initial insider ownership | Feb 26, 2020 | Feb 24, 2020 |
| 3 | Initial insider ownership | Feb 26, 2020 | Feb 24, 2020 |
| 3 | Initial insider ownership | Feb 26, 2020 | Feb 24, 2020 |
| 4 | Insider transaction | Feb 26, 2020 | Feb 24, 2020 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 26, 2020 | — |
| 4 | Insider transaction | Feb 21, 2020 | Feb 19, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2020 | — |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Services-Miscellaneous Amusement & Recreation (SIC 7990)
- Fiscal year ends
- December 29
- Headquarters
- Arlington, TX
- SEC filer status
- Large accelerated filer
- SEC CIK
- 701374
- Former names
- Six Flags Entertainment Corp (until Jun 26, 2024); SIX FLAGS, INC. (until May 11, 2010); SIX FLAGS INC (until Mar 16, 2007); PREMIER PARKS INC (until Mar 10, 2000); TIERCO GROUP INC/DE/ (until Feb 2, 1994)
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All 34 Services-Miscellaneous Amusement & Recreation companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.