# EDGAR Filing Document

**Accession Number:** 0001999001
**File Stem:** 0001193125-26-143825
**Filing Date:** 2026-4
**Character Count:** 13218
**Document Hash:** 09a59278bcc460ac3676ed9bee36d448
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-143825.hdr.sgml**: 20260406

**ACCESSION NUMBER**: 0001193125-26-143825

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20260406

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260406

**DATE AS OF CHANGE**: 20260406

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Six Flags Entertainment Corporation/NEW
- **CENTRAL INDEX KEY:** 0001999001
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-AMUSEMENT & RECREATION SERVICES [7900]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42157
- **FILM NUMBER:** 26841604

**BUSINESS ADDRESS:**
- **STREET 1:** 8701 RED OAK BLVD.
- **CITY:** CHARLOTTE
- **STATE:** NC
- **ZIP:** 28217
- **BUSINESS PHONE:** (419) 626-0830

**MAIL ADDRESS:**
- **STREET 1:** 8701 RED OAK BLVD.
- **CITY:** CHARLOTTE
- **STATE:** NC
- **ZIP:** 28217

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CopperSteel HoldCo, Inc.
- **DATE OF NAME CHANGE:** 20231027

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### WASHINGTON, D.C. 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 or 15(d)

#### of the Securities Exchange Act of 1934

#### Date of Report (Date of earliest event reported): April 6, 2026

## SIX FLAGS ENTERTAINMENT CORPORATION

#### (Exact name of Registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Delaware**  | **001-42157** | **93-4097909** |
| **(State or other jurisdiction<br>of incorporation)** | **(Commission**<br> **File No.)** | **(I.R.S. Employer**<br> **Identification No.)** |

---

#### 8701 Red Oak Blvd.,

#### Charlotte, North Carolina 28217

#### (Address of principal executive offices) (Zip Code)
(704) 414-4700

#### (Registrant's telephone number, including area code)

#### Not Applicable

#### (Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

#### Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading<br>Symbol(s)** | **Name of each exchange<br>on which registered** |
| Common Stock, par value $0.01 per share | FUN | New York Stock Exchange |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

------

#### Item 7.01. Regulation FD Disclosure.
On April 6, 2026, Six Flags Entertainment Corporation (the "**Company**") issued a press release announcing the consummation of the Transaction (as defined below). The press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

#### Item 8.01. Other Events.
As previously announced on March 5, 2026, the Company entered into that certain Equity Purchase Agreement (the "**Purchase Agreement**"), dated March 5, 2026, among the Company, EPR Properties, a Maryland real estate investment trust ("**Buyer**"), and EP OPCO WOFR, LLC, a Delaware limited liability company (the "**Operator**"), to sell the assets and certain liabilities associated with the following parks: Worlds of Fun (Kansas City, Missouri); Michigan's Adventure (Muskegon, Michigan); Valleyfair (Shakopee, Minnesota); Six Flags Great Escape (Queensbury, New York); Schlitterbahn Waterpark Galveston (Galveston, Texas); and Six Flags St. Louis (Eureka, Missouri) (collectively, the "**Parks**").

On April 6, 2026, the Company completed the sale of the Parks to Buyer and the Operator pursuant to the Purchase Agreement (the "**Transaction**").

#### Item 9.01. Financial Statements and Exhibits.
(d) Exhibits.

---

| | |
|:---|:---|
| Exhibit Number | Description of Exhibit |
| Exhibit (99.1) | [Press Release dated April 6, 2026](d130916dex991.htm) |
| Exhibit (104) | Cover Page Interactive Data File (embedded with the Inline XBRL document) |

---

------

#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
| Date: April 6, 2026 | **SIX FLAGS ENTERTAINMENT CORPORATION** | **SIX FLAGS ENTERTAINMENT CORPORATION** |
|  | By: | /s/ Brian C. Witherow |
|  | Name: Brian C. Witherow | Name: Brian C. Witherow |
|  | Title: Chief Financial Officer | Title: Chief Financial Officer |

---

## Exhibit 99.1

**Exhibit 99.1**![LOGO](g130916g0406194406937.jpg)

**NEWS RELEASE** 

---

| | |
|:---|:---|
| **FOR IMMEDIATE RELEASE** | **Investor Contact: Michael Russell, 419.627.2233** |
| **https://investors.sixflags.com** | **Media Contact: Gary Rhodes, 704.249.6119** |

---

**SIX FLAGS COMPLETES SALE OF SIX U.S. PARKS TO EPR PROPERTIES** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• *Sale of Canadian Property La Ronde Expected to Close in Second Quarter* 

**CHARLOTTE, N.C. (Apr. 6, 2026) –** Six Flags Entertainment Corporation (NYSE: FUN) ("Six Flags" or the "Company"), North America's largest regional amusement park operator, today announced the successful closing of the previously announced sale of six of its U.S. parks to EPR Properties (NYSE: EPR) ("EPR"), marking a significant milestone in the Company's ongoing portfolio optimization strategy.

The six U.S. parks now owned by EPR are Valleyfair (Minnesota), Worlds of Fun (Missouri), Michigan's Adventure (Michigan), Schlitterbahn Waterpark Galveston (Texas), Six Flags St. Louis (Missouri), and Six Flags Great Escape (New York). The sale of Six Flags La Ronde (Montreal, QC) is expected to close in the second quarter of 2026, following the satisfaction of applicable closing conditions and receipt of required approvals.

"This divestiture reflects Six Flags' disciplined approach to portfolio optimization and the decisive action we are taking to concentrate our capital and operational focus on properties with the greatest long-term growth potential," said Six Flags President and CEO John Reilly. "This portfolio refinement further positions Six Flags to execute more effectively in 2026 and beyond, and I am confident in the opportunities ahead as we continue taking steps to drive improved operating performance, margin expansion, free cash flow generation, and earnings growth."

EPR intends to partner with Enchanted Parks to run the six domestic properties. EPR will retain the right to utilize the Six Flags brand through the end of 2026, subject to certain requirements, and no significant impact on guests is expected during this transition. The parks will continue their regular operating schedules, and all season passes sold will be recognized through the 2026 operating season, including multi-park pass privileges at other parks within the Six Flags' portfolio.

**Six Flags Entertainment Corporation – 8701 Red Oak Boulevard, Charlotte, NC 28217 – Phone: 704.414.4700**

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***SIX FLAGS COMPLETES SALE OF SIX U.S. PARKS TO EPR PROPERTIES*** 

***Apr. 6, 2026*** 

***Page 2***

**ABOUT SIX FLAGS ENTERTAINMENT CORPORATION** 

Six Flags Entertainment Corporation (NYSE: FUN) is North America's largest regional amusement-resort operator, with 21 amusement parks, 14 water parks and nine resort properties across 13 states in the U.S., Canada, and Mexico. The Company also manages an amusement park in Saudi Arabia. Focused on its purpose of making people happy, Six Flags provides fun, immersive and memorable experiences to millions of guests every year with world-class coasters, themed rides, thrilling water parks, resorts and a portfolio of beloved intellectual property such as Looney Tunes<sup>®</sup>, DC Comics<sup>®</sup> and PEANUTS<sup>®</sup>.

**FORWARD-LOOKING STATEMENTS** 

Some of the statements contained in this news release that are not historical in nature are forward-looking statements within the meaning of the federal securities laws, including Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, including statements as to our expectations, beliefs, goals and strategies regarding the future. Words such as "anticipate," "believe," "create," "expect," "future," "guidance," "intend," "plan," "potential," "seek," "synergies," "target," "objective," "will," "would," similar expressions, and variations or negatives of these words identify forward-looking statements. However, the absence of these words does not mean that the statements are not forward-looking. Forward-looking statements by their nature address matters that are, to different degrees, uncertain. These forward-looking statements may involve current plans, estimates, expectations and ambitions that are subject to risks, uncertainties and assumptions that are difficult to predict, may be beyond our control and could cause actual results to differ materially from those described in such statements. Although we believe that the expectations reflected in such forward-looking statements are reasonable, we can give no assurance that such expectations will prove to be correct, or that our growth and operational strategies will achieve the target results. Important risks and uncertainties that may cause such a difference and could adversely affect attendance at our parks, our future financial performance, and/or our growth strategies, and could cause actual results to differ materially from our expectations or otherwise to fluctuate or decrease, include, but are not limited to: failure to realize the anticipated benefits of the merger between Cedar Fair and legacy Six Flags, including difficulty in integrating the businesses of legacy Six Flags and legacy Cedar Fair; failure to realize the expected amount and timing of cost savings and operating synergies related to the merger; adverse weather conditions; general economic, political and market conditions, including global trade; the impacts of pandemics or

**Six Flags Entertainment Corporation – 8701 Red Oak Boulevard, Charlotte, NC 28217 – Phone: 704.414.4700**

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***SIX FLAGS COMPLETES SALE OF SIX U.S. PARKS TO EPR PROPERTIES*** 

***Apr. 6, 2026*** 

***Page 3***

other public health crises, including the effects of government responses on people and economies; competition for consumer leisure time and spending or other changes in consumer behavior or sentiment for discretionary spending; unanticipated construction delays or increases in construction or supply costs; changes in capital investment plans and projects; anticipated tax treatment, unforeseen liabilities, future capital expenditures, revenues, expenses, earnings, synergies, economic performance, indebtedness, financial condition, losses, future prospects, business and management strategies for the management, expansion and growth of our operations; the impact of any potential shareholder activism; failure to attract, motivate and retain qualified domestic and international employees and key personnel; legislative, regulatory and economic developments and changes in laws, regulations, and policies affecting us; acts of terrorism or outbreak of war, hostilities, civil unrest, and other political or security disturbances; and other risks and uncertainties we discuss under the heading "Risk Factors" within our Annual Report on Form 10-K and in the other filings we make from time to time with the Securities and Exchange Commission. Readers are urged not to place undue reliance on these forward-looking statements, which speak only as of the date of this document and are based on information currently and reasonably known to us. We do not undertake any obligation to publicly update or revise any forward-looking statements to reflect future events, information or circumstances that arise after publication of this news release.

*This news release and prior releases are available under the News tab at <u>https://investors.sixflags.com</u>* 

*# # #* 

**Six Flags Entertainment Corporation – 8701 Red Oak Boulevard, Charlotte, NC 28217 – Phone: 704.414.4700**