Six Flags Entertainment Corporation/NEW
Services-Amusement & Recreation Services
Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.
What Six Flags Entertainment Corporation/NEW reports
Revenue and net income below are for fiscal period FY2025, the period label carried by this company’s own annual XBRL filings to the SEC. Fiscal years do not line up between companies — one company’s FY2026 can cover much the same months as another’s FY2025 — so compare the periods, not just the numbers.
Where the employee count comes from
Headcount comes from Yahoo Finance, not from a filing. The date beside it is the day we retrieved the figure — it is not the date the company counted its staff, and Yahoo does not publish that date. Unlike the SEC filings behind the other figures on this page, this one carries no open licence, so we publish the number and nothing else from that source.
Insiders at Six Flags Entertainment Corporation/NEW
Shares is what each person last reported holding here.
Everyone below has filed at least one insider report against this company.
Value is that share count priced at the same closing price used everywhere else on this site. A row priced from only some of a person’s securities says so — we do not quietly present a partial sum as a complete one.
Rows are grouped by the role each person reports.
The role comes from the relationship boxes a person ticks on their own insider filings — officer, director, ten per cent owner — not from anything we infer. Somebody who is both an officer and a director appears once, in the combined group, so the row count still matches the figure at the top of this page. Where no filing states a role we say so instead of guessing one.
| Insider | Reported role | Shares | Value | Last action |
|---|---|---|---|---|
| Officers 4 | ||||
| Brian C Witherow | CFO | 300,164 | $4.66M | F Shares withheld for taxes Feb 23, 2026 position reported |
| Tim Fisher | COO | 222,242 | $3.45M | F Shares withheld for taxes Feb 23, 2026 position reported |
| David R Hoffman | Chief Accounting Officer | 86,178 | $1.34M | A Grant or award Jul 29, 2026 position reported |
| Brian Nurse | General Counsel | 79,092 | $1.23M | F Shares withheld for taxes Feb 23, 2026 position reported |
| Officers who also sit on the board 4 | ||||
| Richard Zimmerman | CEO | 770,577 | $11.95M | F Shares withheld for taxes Dec 5, 2025 position reported |
| Selim A. Bassoul | Executive Chairman | 537,223 | $8.33M | F Shares withheld for taxes Dec 31, 2025 position reported |
| John T Reilly | CEO | 159,847 | $2.48M | P Open-market purchase Aug 12, 2026 position reported |
| Jennifer Mason | CFO | 26,129 | $405.3K | A Grant or award Jan 2, 2026 position reported |
| Directors 1 | ||||
| Esi Eggleston Bracey | Board Member | 28,520 | $442.3K | A Grant or award Mar 26, 2025 position reported |
Recent insider transactions
Of the 44 rows we hold, 1 are open-market purchases (P) and 0 open-market sales — the only codes we count as buying or selling.
The rest — awards, shares withheld to pay tax, option exercises, gifts and so on — follow from an employment contract or a transfer arranged off-market, not from a decision to buy or sell, so counting them would turn this into a pay table.
A price of 0.00 is a real reported figure on gifts (G) and share awards (A) — not a gap in our data.
| Date | Insider | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|
| Aug 12, 2026 | John T Reilly | P Open-market purchase | 15,713 | $15.80 | $248.3K | SEC filing ↗ |
| Jul 29, 2026 | David R Hoffman | A Grant or award | 16,017 | $0.00 | $0 | SEC filing ↗ |
| Jun 25, 2026 | John T Reilly | A Grant or award | 122,176 | $0.00 | $0 | SEC filing ↗ |
| Jun 25, 2026 | David R Hoffman | A Grant or award | 13,032 | $0.00 | $0 | SEC filing ↗ |
| Feb 23, 2026 | Brian Nurse | F Shares withheld for taxes | 11,246 | $18.24 | $205.1K | SEC filing ↗ |
| Feb 23, 2026 | David R Hoffman | F Shares withheld for taxes | 4,788 | $18.24 | $87.3K | SEC filing ↗ |
| Feb 23, 2026 | Tim Fisher | F Shares withheld for taxes | 19,092 | $18.24 | $348.2K | SEC filing ↗ |
| Feb 23, 2026 | Brian C Witherow | F Shares withheld for taxes | 16,469 | $18.24 | $300.4K | SEC filing ↗ |
| Jan 2, 2026 | Jennifer Mason | A Grant or award | 13,038 | $0.00 | $0 | SEC filing ↗ |
| Dec 31, 2025 | Selim A. Bassoul | F Shares withheld for taxes | 110,955 | $15.34 | $1.70M | SEC filing ↗ |
| Dec 31, 2025 | Selim A. Bassoul | A Grant or award | 261,000 | $0.00 | $0 | SEC filing ↗ |
| Dec 8, 2025 | John T Reilly | A Grant or award | 159,847 | $0.00 | $0 | SEC filing ↗ |
| Dec 5, 2025 | Richard Zimmerman | F Shares withheld for taxes | 130,310 | $15.32 | $2.00M | SEC filing ↗ |
| Dec 5, 2025 | Richard Zimmerman | F Shares withheld for taxes | 114,531 | $15.32 | $1.75M | SEC filing ↗ |
| Dec 5, 2025 | Richard Zimmerman | A Grant or award | 298,190 | $0.00 | $0 | SEC filing ↗ |
| Aug 22, 2025 | Tim Fisher | F Shares withheld for taxes | 21,850 | $25.59 | $559.1K | SEC filing ↗ |
| Jun 4, 2025 | Brian Nurse | F Shares withheld for taxes | 6,508 | $33.11 | $215.5K | SEC filing ↗ |
| Jun 4, 2025 | David R Hoffman | F Shares withheld for taxes | 3,374 | $33.11 | $111.7K | SEC filing ↗ |
| Jun 4, 2025 | Tim Fisher | F Shares withheld for taxes | 11,143 | $33.11 | $368.9K | SEC filing ↗ |
| Jun 4, 2025 | Richard Zimmerman | F Shares withheld for taxes | 25,071 | $33.11 | $830.1K | SEC filing ↗ |
| Jun 4, 2025 | Brian C Witherow | F Shares withheld for taxes | 11,245 | $33.11 | $372.3K | SEC filing ↗ |
| Mar 31, 2025 | Brian Nurse | F Shares withheld for taxes | 1,232 | $35.42 | $43.6K | SEC filing ↗ |
| Mar 31, 2025 | David R Hoffman | F Shares withheld for taxes | 441 | $35.42 | $15.6K | SEC filing ↗ |
| Mar 31, 2025 | Tim Fisher | F Shares withheld for taxes | 1,750 | $35.42 | $62.0K | SEC filing ↗ |
| Mar 31, 2025 | Richard Zimmerman | F Shares withheld for taxes | 5,269 | $35.42 | $186.6K | SEC filing ↗ |
From SEC Form 4 filings. Every row links to the filing it came from. How we calculate this.
What a Form 4 is
The report an officer, director or large shareholder must file after trading their own company’s stock.
Corporate ownership links — 3 filers hold a position
Who owns Six Flags Entertainment Corporation/NEW
Each row is one filer naming this company.
Funds, trusts and other companies file the same ownership forms that executives do. Everything below is taken from those filings, with the position exactly as the filing states it.
Do not add these figures together. 3 of the positions below were reported on filings shared by several filers at once.
Why the same shares appear twice
On a joint filing every named filer is listed against the whole position, so the same block of stock appears under each name. Those rows are marked joint.
Filers holding a position in Six Flags Entertainment Corporation/NEW
| Owner | Reported role | Shares | Filed |
|---|---|---|---|
| Sachem Head Capital Management LP | Director,Other | 5,030,000 joint | |
| Sachem Head GP LLC | Director,Other | 5,030,000 joint | |
| Uncas GP LLC | Director,Other | 5,030,000 joint |
See the full ownership map — every entity that files as an owner of a US public company.
Subsidiaries — 90 legal entities
Subsidiaries of Six Flags Entertainment Corporation/NEW
90 legal entities named in the subsidiary exhibit filed with this company’s most recent 10-K. . Filing on SEC.gov.
This is not the full list. SEC rules only require a company to name its significant subsidiaries.
What that leaves out
Smaller entities are left out of the exhibit entirely. A short list here means a short exhibit — it does not mean the company owns nothing else. Nothing on this page is inferred: every name below is copied from the filing.
| Subsidiary | Organised in |
|---|---|
| 9103-2359 Quebec Inc. | Canada |
| Assenzio S.r.l. | Italy |
| California's Great America LLC | Delaware |
| Canada's Wonderland Company | Canada (Nova Scotia) |
| Carowinds LLC | Delaware |
| Cedar Fair Southwest LLC | Delaware |
| Cedar Point Park LLC | Delaware |
| Cedar Point Sports Park LLC | Delaware |
| Dorney Park LLC | Delaware |
| Entertainment Services Latam S.A. de C.V. | Mexico |
| Fiesta Texas Hospitality LLC | Texas |
| Fiesta Texas, Inc. | Texas |
| Flags Beverages, Inc. | Texas |
| Funtime Parks, Inc. | Delaware |
| Funtime, Inc. | Ohio |
| Galveston Waterpark LLC | Delaware |
| Geauga Lake LLC | Delaware |
| GP Holdings Inc. | Delaware |
| Great America LLC | Illinois |
| Great Escape Holding Inc. | New York |
| Great Escape Rides L.P. | New York |
| Great Escape Theme Park L.P. | New York |
| Hurricane Harbor LLC | Texas |
| HWP Development LLC | New York |
| Kings Dominion LLC | Delaware |
| Kings Island Company | Delaware |
| Kings Island Park LLC | Delaware |
| Knott's Berry Farm LLC | Delaware |
| Magic Mountain LLC | California |
| Magnum Management Corporation | Ohio |
| Michigan's Adventure Park LLC | Delaware |
| Millennium Operations LLC | Delaware |
| New Braunfels Waterpark LLC | Delaware |
| Parc Six Flags Montreal Inc. | Canada |
| Parc Six Flags Montreal, S.E.C. | Canada |
| Park Management Corp. | California |
| PP Data Services Inc. | Texas |
| Premier International Holdings Inc. | Delaware |
| Premier Parks Holdings Inc. | Delaware |
| Riverside Park Enterprises, Inc. | Massachusetts |
| Sawmill Creek LLC | Delaware |
| SFG Holdings, Inc. | Delaware |
| SFOG Acquisition A Holdings, Inc. | Delaware |
| SFOG Acquisition A, Inc. | Delaware |
| SFOG Acquisition B Holdings, Inc. | Delaware |
| SFOG Acquisition B, L.L.C. | Delaware |
| SFOG Acquisition Company LLC | Delaware |
| SFOG II Employee, Inc. | Delaware |
| SFOG II, Inc. | Delaware |
| SFOT Acquisition I Holdings, Inc. | Delaware |
| SFOT Acquisition I, Inc. | Delaware |
| SFOT Acquisition II Holdings, Inc. | Delaware |
| SFOT Acquisition II, Inc. | Delaware |
| SFOT Employee, Inc. | Delaware |
| SFOT II Holdings, LLC | Delaware |
| SFT Holdings, Inc. | Delaware |
| Six Flags America Inc. | Colorado |
| Six Flags America LP | Maryland |
| Six Flags America Property Corporation | Maryland |
| Six Flags Associates, Inc. | Ohio |
| Six Flags Concord LLC | California |
| Six Flags Darien LLC | New York |
| Six Flags Darien Seasonal LLC | New York |
| Six Flags eCommerce LLC | Maryland |
| Six Flags Frontier LLC | Oklahoma |
| Six Flags Great Adventure LLC | New Jersey |
| Six Flags Great America Holding LLC | Illinois |
| Six Flags Great Escape L.P. | New York |
| Six Flags International Development Co. | Texas |
| Six Flags International Management Company | Saudi Arabia |
| Six Flags Mexico S.A. de C.V. | Mexico |
| Six Flags MW LLC | Illinois |
| Six Flags Oaxtepec S.A. de C.V. | Mexico |
| Six Flags Operations Inc. | Delaware |
| Six Flags Over Georgia II, L.P. | Delaware |
| Six Flags Over Georgia, Inc. | Delaware |
| Six Flags Over Texas, Inc. | Delaware |
| Six Flags Phoenix LLC | Arizona |
| Six Flags Services of Illinois, Inc. | Delaware |
| Six Flags Services, Inc. | Delaware |
| Six Flags Splashtown LLC | Texas |
| Six Flags St. Louis LLC | Missouri |
| Six Flags Theme Parks Inc. | Delaware |
| Six Flags WW Bay LLC | Oklahoma |
| Stuart Amusement Company | Massachusetts |
| Texas Flags, Ltd. | Texas |
| Valleyfair LLC | Delaware |
| Ventas y Servicios al Consumidor S.A. de C.V. | Mexico |
| Wonderland Company Inc. | Delaware |
| Worlds of Fun LLC | Delaware |
What counts as a subsidiary
A subsidiary is a separate legal entity this company controls; it is not the same thing as a brand, a division or an office. These entities do not file with the SEC in their own right, so there is no separate page to open for them.
Think a number here is wrong? Open the linked filing and compare — how to report it.
Sources and technical notes
Every figure on this page comes from filings to the U.S. SEC via EDGAR. Nothing here is estimated, and nothing is taken from press coverage or company websites.
Share count: cover page of the latest filing (dei:EntityCommonStockSharesOutstanding), taken from
Six Flags Entertainment Corporation/NEW’s own filings and multiplied by our closing price.
Full method.
What that share count means
the share count the company itself prints on the cover of its most recent filing, as of the date it signed that filing.
We do not take a market cap from a data vendor, and we do not estimate one: the figure is a share count from Six Flags Entertainment Corporation/NEW’s own SEC filings multiplied by the closing price we hold for the same stock.
Logo: Six Flags / Public domain , via Wikimedia Commons ↗ — used here to identify the company. Trademarks remain the property of their owner.