Six Flags Entertainment 401(k) and pension plans

Six Flags Entertainment Corporation, Arlington, TX. EIN 13-3995059. Annual reports 2009–2024. Also filed as Six Flags, Inc.

Six Flags Entertainment Corporation has 2 active retirement plans on file. The largest is the Six Flags 401(k) Plan, with 27,330 participants and $176 million in assets in 2024. Fidelity has been its recordkeeper since 2013.

Active plans: 2
Participants: 29,367
Plan assets: $338 million
401(k) recordkeeper: Fidelity
Plans on file: 2
Industry: Arts and recreation

All 2 plans

Active plans first

Six Flags 401(k) Plan

401(k)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 002Employer EIN 13-3995059
Participants (2024): 27,330
Net assets (2024): $176 million
Recordkeeper: FidelityEarlier: Schwab (2009–2012)
Plan administrator: Six Flags Entertainment Corporation
1000 Ballpark Way, Suite 400
Arlington, TX 76011
(972) 595-5000As filed for 2024
In effect since: July 1, 1988

Earlier sponsor: Six Flags, Inc. (2009).

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	27,330	$176 million	Fidelity
2023	7,852	$167 million	Fidelity
2022	7,134	$161 million	Fidelity
2021	9,202	$213 million	Fidelity
2020	7,307	$197 million	Fidelity
2019	6,729	$194 million	Fidelity
2018	6,324	$163 million	Fidelity
2017	6,407	$169 million	Fidelity
2016	6,819	$143 million	Fidelity
2015	5,964	$129 million	Fidelity
2014	5,602	$126 million	Fidelity
2013	4,894	$115 million	Fidelity
2012	12,151	$98.4 million	Schwab
2011	5,890	$89.0 million	Schwab
2010	4,255	$89.6 million	Schwab
2009	2,553	$85.9 million	Schwab

Six Flags, Inc. Pension Plan

Pension (defined benefit), frozenActive

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 001Employer EIN 13-3995059
Participants (2024): 2,037
Net assets (2024): $162 million
Administered by: Sei Private TrustEarlier: Sei Investments (2009–2010)
Plan administrator: Pension Committee of Six Flags, Inc
1000 Ballpark Way, Suite 400
Arlington, TX 76011
(972) 595-5000As filed for 2024
In effect since: May 20, 1987

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	2,037	$162 million	Sei Private Trust
2023	2,091	$173 million	Sei Private Trust
2022	2,119	$173 million	Sei Private Trust
2021	2,187	$220 million	Sei Private Trust
2020	2,223	$220 million	Sei Private Trust
2019	2,249	$208 million	Sei Private Trust
2018	2,369	$190 million	Sei Private Trust
2017	2,387	$197 million	Sei Private Trust
2016	2,912	$185 million	Sei Private Trust
2015	3,075	$179 million	Sei Private Trust
2014	3,376	$192 million	Sei Private Trust
2013	4,431	$179 million	Sei Private Trust
2012	4,514	$166 million	Sei Private Trust
2011	4,604	$150 million	Sei Private Trust
2010	4,686	$146 million	Sei Investments
2009	4,781	$132 million	Sei Investments

If you had money in one of these plans

Call Fidelity (fidelity.com), which runs the Six Flags 401(k) Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((972) 595-5000). That number was filed for 2024; ask for the benefits or retirement plan office.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.

All 2 plans

Six Flags 401(k) Plan

Six Flags, Inc. Pension Plan

If you had money in one of these plans

What these numbers are

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