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 |
|---|---|---|---|
| 15-12G | Deregistration | Jul 12, 2024 | — |
| 25-NSE | Delisting notice | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| S-8 POS | Filing | Jul 2, 2024 | — |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, Listing notice, Change to shareholder rights, Regulation FD disclosure, Other events
|
Jul 1, 2024 | Jul 1, 2024 |
| 425 | Filing | Jun 26, 2024 | — |
| 425 | Filing | Jun 26, 2024 | — |
| 8-K |
Current report
Other events
|
Jun 26, 2024 | Jun 26, 2024 |
| 425 | Filing | Jun 18, 2024 | — |
| 425 | Filing | Jun 18, 2024 | — |
| 8-K |
Current report
Other events
|
Jun 18, 2024 | Jun 18, 2024 |
| 10-Q | Quarterly report | May 9, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 9, 2024 | May 9, 2024 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
May 2, 2024 | May 2, 2024 |
| 10-K/A | Amended annual report | Apr 29, 2024 | Dec 31, 2023 |
| 425 | Filing | Apr 16, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 16, 2024 | Apr 16, 2024 |
| 425 | Filing | Apr 16, 2024 | — |
| 8-K |
Current report
Other events
|
Apr 16, 2024 | Apr 16, 2024 |
| 425 | Filing | Mar 12, 2024 | — |
| 425 | Filing | Mar 12, 2024 | — |
| 8-K |
Current report
Shareholder vote results
|
Mar 12, 2024 | Mar 12, 2024 |
| 425 | Filing | Mar 4, 2024 | — |
| 425 | Filing | Mar 4, 2024 | — |
| 8-K |
Current report
Other events
|
Mar 4, 2024 | Mar 4, 2024 |
| DEFA14A | Additional proxy material | Mar 4, 2024 | — |
| 10-K | Annual report | Feb 29, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 29, 2024 | Feb 29, 2024 |
| DEFM14A | Filing | Jan 31, 2024 | — |
| 425 | Filing | Jan 23, 2024 | — |
| 8-K |
Current report
Other events
|
Jan 23, 2024 | Jan 22, 2024 |
| 425 | Filing | Dec 22, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Dec 22, 2023 | Dec 20, 2023 |
| 425 | Filing | Nov 13, 2023 | — |
| 8-K |
Current report
Other events
|
Nov 13, 2023 | Nov 9, 2023 |
| 10-Q | Quarterly report | Nov 13, 2023 | Oct 1, 2023 |
| 425 | Filing | Nov 3, 2023 | — |
| 425 | Filing | Nov 3, 2023 | — |
| 425 | Filing | Nov 3, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 3, 2023 | Nov 3, 2023 |
| 425 | Filing | Nov 2, 2023 | — |
| 425 | Filing | Nov 2, 2023 | — |
| 425 | Filing | Nov 2, 2023 | — |
| 425 | Filing | Nov 2, 2023 | — |
| DEFA14A | Additional proxy material | Nov 2, 2023 | — |
| 425 | Filing | Nov 2, 2023 | — |
| 425 | Filing | Nov 2, 2023 | — |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure, Other events
|
Nov 2, 2023 | Nov 2, 2023 |
| 10-Q | Quarterly report | Aug 11, 2023 | Jul 2, 2023 |
| 8-K/A |
Amended current report
Results of operations
|
Aug 11, 2023 | Aug 10, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2023 | Aug 10, 2023 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 12, 2023 | May 10, 2023 |
| 10-Q | Quarterly report | May 8, 2023 | Apr 2, 2023 |
| 8-K |
Current report
Results of operations
|
May 8, 2023 | May 8, 2023 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
May 4, 2023 | May 4, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 26, 2023 | Apr 26, 2023 |
| ARS | Annual report to shareholders | Mar 28, 2023 | Jan 1, 2023 |
| DEFA14A | Additional proxy material | Mar 28, 2023 | — |
| DEF 14A | Proxy statement | Mar 28, 2023 | — |
| PRE 14A | Preliminary proxy statement | Mar 17, 2023 | — |
| 8-K/A |
Amended current report
Officer or director change
|
Mar 10, 2023 | Jan 31, 2023 |
| 10-K | Annual report | Mar 7, 2023 | Jan 1, 2023 |
| NT 10-K | Notification of inability to timely file form 10-k | Mar 2, 2023 | Mar 2, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 2, 2023 | Mar 2, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 31, 2023 | Jan 31, 2023 |
| 10-Q | Quarterly report | Nov 10, 2022 | Oct 2, 2022 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Nov 10, 2022 | Nov 10, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2022 | Nov 10, 2022 |
| 8-K/A |
Amended current report
Officer or director change
|
Oct 5, 2022 | Sep 19, 2022 |
| 8-K |
Current report
Officer or director change
|
Sep 22, 2022 | Sep 19, 2022 |
| UPLOAD | Letter from the SEC | Sep 22, 2022 | — |
| CORRESP | Letter to the SEC | Sep 14, 2022 | — |
| UPLOAD | Letter from the SEC | Aug 19, 2022 | — |
| 8-K/A |
Amended current report
Officer or director change
|
Aug 17, 2022 | Jul 22, 2022 |
| 10-Q | Quarterly report | Aug 11, 2022 | Jul 3, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2022 | Aug 11, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jul 28, 2022 | Jul 22, 2022 |
| 8-K |
Current report
Officer or director change
|
Jun 23, 2022 | Jun 20, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 14, 2022 | Jun 13, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
May 31, 2022 | May 31, 2022 |
| 10-Q | Quarterly report | May 12, 2022 | Apr 3, 2022 |
| 8-K |
Current report
Results of operations
|
May 12, 2022 | May 12, 2022 |
| 8-K |
Current report
Shareholder vote results
|
May 11, 2022 | May 11, 2022 |
| DEFA14A | Additional proxy material | Mar 29, 2022 | — |
| DEF 14A | Proxy statement | Mar 29, 2022 | May 11, 2022 |
| PRE 14A | Preliminary proxy statement | Mar 18, 2022 | Mar 18, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 28, 2022 | Feb 25, 2022 |
| 10-K | Annual report | Feb 24, 2022 | Jan 2, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 24, 2022 | Feb 24, 2022 |
| 8-K |
Current report
Officer or director change
|
Dec 3, 2021 | Dec 1, 2021 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 15, 2021 | Nov 13, 2021 |
| 10-Q | Quarterly report | Oct 27, 2021 | Oct 3, 2021 |
| 8-K |
Current report
Results of operations
|
Oct 27, 2021 | Oct 27, 2021 |
| 10-Q | Quarterly report | Jul 28, 2021 | Jul 4, 2021 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2021 | Jul 28, 2021 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 6, 2021 | May 6, 2021 |
| 10-Q | Quarterly report | Apr 28, 2021 | Apr 4, 2021 |
| 8-K |
Current report
Results of operations
|
Apr 28, 2021 | Apr 28, 2021 |
| DEFA14A | Additional proxy material | Apr 21, 2021 | — |
| 8-A12B/A | Filing | Apr 1, 2021 | — |
| DEFA14A | Additional proxy material | Mar 30, 2021 | — |
| 8-K |
Current report
Other events
|
Mar 29, 2021 | Mar 29, 2021 |
| DEFA14A | Additional proxy material | Mar 23, 2021 | — |
| DEF 14A | Proxy statement | Mar 23, 2021 | May 5, 2021 |
| 8-K |
Current report
Other events
|
Mar 12, 2021 | Mar 12, 2021 |
| PRE 14A | Preliminary proxy statement | Mar 12, 2021 | May 5, 2021 |
| 10-K | Annual report | Feb 25, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 24, 2021 | Feb 24, 2021 |
| 8-K |
Current report
Officer or director change
|
Feb 12, 2021 | Feb 9, 2021 |
| 8-K |
Current report
Material agreement, Officer or director change, Bylaw or fiscal year change
|
Dec 28, 2020 | Dec 28, 2020 |
| 10-Q | Quarterly report | Oct 28, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2020 | Oct 28, 2020 |
| 8-K |
Current report
Other events
|
Oct 13, 2020 | Oct 13, 2020 |
| 8-K/A |
Amended current report
Officer or director change
|
Sep 11, 2020 | Aug 4, 2020 |
| 8-K/A |
Amended current report
Regulation FD disclosure
|
Aug 27, 2020 | Aug 26, 2020 |
| 8-K |
Current report
Officer or director change
|
Aug 27, 2020 | Jul 23, 2020 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Aug 26, 2020 | Aug 26, 2020 |
| 8-K |
Current report
Officer or director change
|
Aug 5, 2020 | Aug 4, 2020 |
| 10-Q | Quarterly report | Jul 29, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2020 | Jul 29, 2020 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 24, 2020 | Jun 21, 2020 |
| 8-K |
Current report
Shareholder vote results
|
May 8, 2020 | May 6, 2020 |
| 10-Q | Quarterly report | Apr 30, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2020 | Apr 30, 2020 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Apr 23, 2020 | Apr 22, 2020 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 15, 2020 | Apr 14, 2020 |
| DEFA14A | Additional proxy material | Apr 13, 2020 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure, Other events
|
Apr 8, 2020 | Apr 8, 2020 |
| CERT | Nyse certification | Apr 1, 2020 | — |
| 8-A12B | Filing | Mar 31, 2020 | — |
| 8-K |
Current report
Material agreement, Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Mar 31, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Mar 30, 2020 | Mar 30, 2020 |
| DEFA14A | Additional proxy material | Mar 19, 2020 | — |
| DEF 14A | Proxy statement | Mar 19, 2020 | May 6, 2020 |
| 8-K |
Current report
Other events
|
Mar 13, 2020 | Mar 13, 2020 |
| 8-K |
Current report
Officer or director change, Other events
|
Feb 25, 2020 | Feb 21, 2020 |
| 10-K | Annual report | Feb 20, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations, Other events
|
Feb 20, 2020 | Feb 20, 2020 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Jan 31, 2020 | Jan 30, 2020 |
| 8-K |
Current report
Other events
|
Jan 10, 2020 | Jan 10, 2020 |
| 8-K |
Current report
Other events
|
Nov 18, 2019 | Nov 18, 2019 |
| 8-K |
Current report
Officer or director change
|
Nov 15, 2019 | Nov 13, 2019 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 24, 2019 | Oct 24, 2019 |
| 10-Q | Quarterly report | Oct 23, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Oct 22, 2019 | Oct 22, 2019 |
| 8-K |
Current report
Material agreement
|
Oct 18, 2019 | Oct 18, 2019 |
| 8-K |
Current report
Other events
|
Aug 23, 2019 | Aug 23, 2019 |
| 10-Q | Quarterly report | Jul 24, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Jul 24, 2019 | Jul 24, 2019 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 3, 2019 | May 1, 2019 |
| 10-Q | Quarterly report | Apr 24, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Results of operations
|
Apr 23, 2019 | Apr 23, 2019 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 17, 2019 | Apr 17, 2019 |
| DEFA14A | Additional proxy material | Mar 19, 2019 | — |
| DEF 14A | Proxy statement | Mar 19, 2019 | May 1, 2019 |
| 8-K |
Current report
Officer or director change
|
Mar 7, 2019 | Mar 7, 2019 |
| 10-K | Annual report | Feb 20, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Feb 14, 2019 | Feb 14, 2019 |
| 8-K |
Current report
Other events
|
Feb 6, 2019 | Feb 6, 2019 |
| 8-K |
Current report
Other events
|
Nov 14, 2018 | Nov 14, 2018 |
| UPLOAD | Letter from the SEC | Oct 29, 2018 | — |
| 10-Q | Quarterly report | Oct 24, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Oct 24, 2018 | Oct 23, 2018 |
| CORRESP | Letter to the SEC | Sep 27, 2018 | — |
| UPLOAD | Letter from the SEC | Sep 17, 2018 | — |
| 8-K |
Current report
Other events
|
Aug 16, 2018 | Aug 16, 2018 |
| CORRESP | Letter to the SEC | Aug 7, 2018 | — |
| 10-Q | Quarterly report | Jul 25, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Results of operations
|
Jul 25, 2018 | Jul 25, 2018 |
| CORRESP | Letter to the SEC | Jul 20, 2018 | — |
| UPLOAD | Letter from the SEC | Jul 9, 2018 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
May 22, 2018 | May 22, 2018 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 4, 2018 | May 2, 2018 |
| 10-Q | Quarterly report | Apr 25, 2018 | Mar 31, 2018 |
| 8-K |
Current report
Results of operations
|
Apr 24, 2018 | Apr 24, 2018 |
| 8-K |
Current report
Material agreement
|
Mar 26, 2018 | Mar 26, 2018 |
| DEFA14A | Additional proxy material | Mar 20, 2018 | — |
| DEF 14A | Proxy statement | Mar 20, 2018 | May 2, 2018 |
| PRE 14A | Preliminary proxy statement | Mar 9, 2018 | May 2, 2018 |
| 10-K | Annual report | Feb 20, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Results of operations
|
Feb 20, 2018 | Feb 20, 2018 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Feb 7, 2018 | Feb 7, 2018 |
| 8-K |
Current report
Other events
|
Dec 22, 2017 | Dec 22, 2017 |
| 8-K |
Current report
Other events
|
Nov 8, 2017 | Nov 8, 2017 |
| 10-Q | Quarterly report | Oct 25, 2017 | Sep 30, 2017 |
| 8-K |
Current report
Results of operations
|
Oct 25, 2017 | Oct 25, 2017 |
| 8-K |
Current report
Other events
|
Aug 17, 2017 | Aug 17, 2017 |
| S-8 | Employee stock plan registration | Jul 28, 2017 | — |
| 10-Q | Quarterly report | Jul 26, 2017 | Jun 30, 2017 |
| 8-K |
Current report
Results of operations
|
Jul 26, 2017 | Jul 26, 2017 |
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.