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Six Flags Entertainment Corporation/NEW — All Filings

184 total filings on record

Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-Q 144 3 4 424B3 425 8-K 8-K/A 8-K12B 8-K12B/A ARS CORRESP DEF 14A EFFECT S-4 S-4/A S-8 SC 13D SCHEDULE 13D/A SCHEDULE 13G SCHEDULE 13G/A UPLOAD
Form Description Accession Number Filed Period
SCHEDULE 13G/A 0000102909-26-002251 Mar 27, 2026
8-K 8-K 0001193125-26-124392 Mar 25, 2026 Mar 24, 2026
8-K 8-K 0001193125-26-106226 Mar 13, 2026 Mar 10, 2026
8-K 8-K 0001193125-26-092688 Mar 5, 2026
10-K ANNUAL REPORT ON FORM 10-K 0001999001-26-000048 Feb 26, 2026 Dec 31, 2025
4 FORM 4 0001999001-26-000043 Feb 25, 2026 Feb 23, 2026
4 FORM 4 0001999001-26-000042 Feb 25, 2026 Feb 23, 2026
4 FORM 4 0001999001-26-000041 Feb 25, 2026 Feb 23, 2026
4 FORM 4 0001999001-26-000040 Feb 25, 2026 Feb 23, 2026
4 FORM 4 0001999001-26-000039 Feb 25, 2026 Feb 23, 2026
4 FORM 4 0001999001-26-000038 Feb 25, 2026 Feb 23, 2026
8-K Q4 2025 EARNINGS RELEASE ON FORM 8-K 0001999001-26-000022 Feb 19, 2026
SCHEDULE 13G/A 0000935836-26-000085 Feb 13, 2026
8-K 8-K 0001193125-26-021051 Jan 23, 2026 Jan 21, 2026
8-K 8-K 0001193125-26-012924 Jan 14, 2026
4 FORM 4 0001999001-26-000019 Jan 6, 2026 Jan 2, 2026
4 FORM 4 0001999001-26-000018 Jan 6, 2026 Jan 2, 2026
4 FORM 4 0001999001-26-000017 Jan 6, 2026 Jan 2, 2026
4 FORM 4 0001999001-26-000016 Jan 6, 2026 Jan 2, 2026
4 FORM 4 0001999001-26-000015 Jan 6, 2026 Jan 2, 2026
4 FORM 4 0001999001-26-000014 Jan 6, 2026 Jan 2, 2026
4 FORM 4 0001999001-26-000013 Jan 6, 2026 Jan 2, 2026
8-K 8-K 0001193125-26-003472 Jan 6, 2026
8-K 8-K 0001193125-26-002779 Jan 5, 2026
8-K 8-K 0001193125-26-002477 Jan 5, 2026 Dec 29, 2025
4 FORM 4 0001999001-26-000005 Jan 5, 2026 Dec 31, 2025
4 FORM 4 0001999001-26-000002 Jan 5, 2026 Dec 31, 2025
4 FORM 4 0001999001-25-000183 Dec 29, 2025 Dec 24, 2025
8-K 8-K 0001193125-25-330990 Dec 23, 2025 Dec 17, 2025
4 FORM 4 0001999001-25-000181 Dec 9, 2025 Dec 8, 2025
3 FORM 3 0001999001-25-000180 Dec 9, 2025 Dec 8, 2025
4 FORM 4 0001999001-25-000179 Dec 9, 2025 Dec 5, 2025
8-K 8-K 0001193125-25-293793 Nov 24, 2025 Nov 21, 2025
10-Q 10-Q 0001999001-25-000175 Nov 7, 2025 Sep 28, 2025
8-K Q3 2025 EARNINGS RELEASE ON FORM 8-K 0001999001-25-000171 Nov 7, 2025
3 OWNERSHIP DOCUMENT 0001104659-25-102675 Oct 27, 2025 Oct 17, 2025
8-K 8-K 0001193125-25-242513 Oct 17, 2025
8-K 8-K 0001193125-25-237126 Oct 10, 2025
8-K 8-K 0001999001-25-000164 Sep 12, 2025
4 FORM 4 0001999001-25-000161 Aug 25, 2025 Aug 22, 2025
8-K/A 8-K/A 0001999001-25-000159 Aug 22, 2025 Jun 25, 2025
SCHEDULE 13G/A 0000935836-25-000523 Aug 14, 2025
4 FORM 4 0001999001-25-000156 Aug 8, 2025 Aug 7, 2025
10-Q 10-Q 0001999001-25-000154 Aug 6, 2025 Jun 29, 2025
8-K 8-K 0001193125-25-174048 Aug 6, 2025
8-K Q2 2025 EARNINGS RELEASE ON FORM 8-K 0001999001-25-000152 Aug 6, 2025
4 FORM 4 0001999001-25-000147 Jun 27, 2025 Jun 25, 2025
3 FORM 3 0001999001-25-000145 Jun 27, 2025 Jun 25, 2025
4 FORM 4 0001999001-25-000143 Jun 27, 2025 Jun 25, 2025
4 FORM 4 0001999001-25-000141 Jun 27, 2025 Jun 25, 2025