What SEC filings does Six Flags Entertainment Corporation submit to the SEC?

Six Flags Entertainment Corporation (FUN) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about FUN?

A Form 4 for FUN discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Six Flags Entertainment Corporation?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for FUN?

The 10-K is Six Flags Entertainment Corporation's annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all FUN SEC filings directly on EDGAR?

You can view all historical Six Flags Entertainment Corporation filings on the SEC EDGAR company page for FUN. Each filing card on this page links directly to the original SEC document.

How often does Six Flags Entertainment Corporation file with the SEC?

Six Flags Entertainment Corporation files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling FUN shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

FUN SEC Filing News — Six Flags Entertainment Corporation

Latest SEC filings for Six Flags Entertainment Corporation (FUN) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-08-12.

Six Flags Entertainment Corporation operates amusement parks and resort properties in North America. It operates amusement parks, water parks, and resorts in the United States, Mexico, and Canada. The company was formerly known as Cedar Fair, L.P. and changed its name to Six Flags Entertainment Corporation in July 2024. The company was founded in 1983 and is headquartered in Charlotte, North Carolina.

Sector: Consumer Cyclical Industry: Leisure Market Cap: $847.2M CIK: 1999001

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for FUN currently lean bullish. Of the 20 displayed SEC filing records, 4 carry bullish classifications versus 0 bearish classifications. These labels summarize filing attributes; they are not recommendations, probabilities, or evidence of future price direction. There were 13 insider transactions (Form 4) in this period.

FUN Filing Activity Snapshot 2026-05-14 — 2026-08-12

Insider Transactions (Form 4)

4 buys vs 0 sells

Net insider buying in this period — more purchases than sales reported.

Largest Form 144 Filing

$5.89M

JAFFER REHAN (Director) · 2026-06-16

250,000 shares · Form 4

Insider Transactions 13 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 13 filings in this group are Form 4s for Six Flags Entertainment Corporation.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 13 insider filings shown, the breakdown is 9 compensation award and 4 open-market purchase. 4 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Compensation award ×9: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Open-market purchase ×4: The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Form 4 Open-market purchase Insider Buying 2026-08-12

FUN insider Reilly John T (Director, President & CEO) bought 15,713 shares (~$248.3K)

Reilly John T, listed as Director, President & CEO at Six Flags Entertainment Corporation/NEW, reported an open-market purchase of 15,713 FUN shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	15,713	$15.80	$248.3K

Filing: Form 4 (Insider Transaction) Insider: Reilly John T (Director, President & CEO) Shares: 15,713 Est. Value: $248.3K

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-31

FUN insider Form 4 filed for equity award, exercise, or tax withholding

Walia Ashok (Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	66,738	—	—

Filing: Form 4 (Insider Transaction) Insider: Walia Ashok (Chief Financial Officer) Shares: 66,738

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-31

FUN insider Form 4 filed for equity award, exercise, or tax withholding

Hoffman David R. (Chief Accounting Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	16,017	—	—

Filing: Form 4 (Insider Transaction) Insider: Hoffman David R. (Chief Accounting Officer) Shares: 16,017

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-31

FUN insider Form 4 filed for equity award, exercise, or tax withholding

Bennett Christopher Lawrence (Chief Legal Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	9,343	—	—

Filing: Form 4 (Insider Transaction) Insider: Bennett Christopher Lawrence (Chief Legal Officer) Shares: 9,343

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

FUN insider Form 4 filed for equity award, exercise, or tax withholding

Walia Ashok (Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	40,595	—	—

Filing: Form 4 (Insider Transaction) Insider: Walia Ashok (Chief Financial Officer) Shares: 40,595

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

FUN insider Form 4 filed for equity award, exercise, or tax withholding

Tastepe Tayfun (Chief Digital & Tech Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	13,032	—	—

Filing: Form 4 (Insider Transaction) Insider: Tastepe Tayfun (Chief Digital & Tech Officer) Shares: 13,032

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

FUN insider Form 4 filed for equity award, exercise, or tax withholding

Martin Ziegenfuss Amy (Chief Marketing Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	18,788	—	—

Filing: Form 4 (Insider Transaction) Insider: Martin Ziegenfuss Amy (Chief Marketing Officer) Shares: 18,788

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

FUN insider Form 4 filed for equity award, exercise, or tax withholding

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	13,032	—	—

Filing: Form 4 (Insider Transaction) Insider: Hoffman David R. (Chief Accounting Officer) Shares: 13,032

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

FUN insider Form 4 filed for equity award, exercise, or tax withholding

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	37,337	—	—

Filing: Form 4 (Insider Transaction) Insider: Bennett Christopher Lawrence (Chief Legal Officer) Shares: 37,337

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-29

FUN insider Form 4 filed for equity award, exercise, or tax withholding

Reilly John T (Director, President & CEO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	122,176	—	—

Filing: Form 4 (Insider Transaction) Insider: Reilly John T (Director, President & CEO) Shares: 122,176

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-06-16

FUN insider JAFFER REHAN (Director) bought 250,000 shares (~$5.89M)

JAFFER REHAN, listed as Director at Six Flags Entertainment Corporation/NEW, reported an open-market purchase of 250,000 FUN shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	125,000	$23.69	$2.96M
`P`	Open-market purchase	125,000	$23.41	$2.93M

Filing: Form 4 (Insider Transaction) Insider: JAFFER REHAN (Director) Shares: 250,000 Est. Value: $5.89M

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-05-26

FUN insider Spiegel Marilyn G (Director) bought 2,500 shares (~$47.8K)

Spiegel Marilyn G, listed as Director at Six Flags Entertainment Corporation/NEW, reported an open-market purchase of 2,500 FUN shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	2,500	$19.10	$47.8K

Filing: Form 4 (Insider Transaction) Insider: Spiegel Marilyn G (Director) Shares: 2,500 Est. Value: $47.8K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-05-14

FUN insider Spiegel Marilyn G (Director) bought 2,500 shares (~$47.8K)

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	2,500	$19.12	$47.8K

Filing: Form 4 (Insider Transaction) Insider: Spiegel Marilyn G (Director) Shares: 2,500 Est. Value: $47.8K

View on SEC EDGAR → Open Filing Document →

Material Events 6 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 6 in this period for Six Flags Entertainment Corporation. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-08-06

FUN filed 8-K — material company event

Six Flags Entertainment Corporation/NEW filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-07-02

FUN filed 8-K — material company event

Six Flags Entertainment Corporation/NEW filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-07-01

FUN filed 8-K — material company event

Six Flags Entertainment Corporation/NEW filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-05-27

FUN filed 8-K — material company event

Six Flags Entertainment Corporation/NEW filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-05-27

FUN filed 8-K — material company event

Six Flags Entertainment Corporation/NEW filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-05-20

FUN filed 8-K — material company event

Six Flags Entertainment Corporation/NEW filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Periodic Reports 1 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 quarterly report (10-Q) for Six Flags Entertainment Corporation.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-06

FUN filed Quarterly Report (10-Q)

Six Flags Entertainment Corporation/NEW filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

How we classify Six Flags Entertainment Corporation's filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on FUN. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — FUN SEC Filings

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Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.

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