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Company · FUN

Six Flags Entertainment Corporation

Name as listed on its exchange; filed with the SEC as Six Flags Entertainment Corporation/NEW.

Nasdaq's symbol directory lists FUN on the New York Stock Exchange as “Six Flags Entertainment Corporation Common Stock New”.

In the 12 months to Nov 8, 2026: insiders bought on 3 occasions ($6.1M); 2 filings by holders of 5% or more; 1 company report (Form 8-K, since May 26, 2026).

All insider filings at the SEC

Insider purchases and sales, by month (last 12 months)Insider purchases: $6.1M in total; Insider sales: $0 in total.Jun: Insider purchases $5.9MAug: Insider purchases $248KDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $6.1MInsider sales below: $0
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.

Insider trades · SEC Form 4

Those inside the hall

Open-market purchases and sales only. Legs one person filed for one day are combined.

Who traded

  1. Rehan Jaffer bought on 2 days latest Jun 15, 2026 bought $5.9M
  2. John T. Reilly, President & CEO bought on 1 day latest Aug 12, 2026 bought $248K
Every trade (3)
  1. BUYJohn T. Reilly, President & CEO bought Aug 12, 2026 15,713 shares 10b5-1 plan (scheduled) filing $248K
  2. BUYRehan Jaffer bought Jun 15, 2026 125,000 shares filing $2.9M
  3. BUYRehan Jaffer bought Jun 12, 2026 125,000 shares filing $3.0M

Large holders · SEC Schedules 13D and 13G

Five percent and over

Anyone who comes to hold more than 5% of a company's voting shares must tell the SEC. A Schedule 13D is filed by a holder who may seek to influence the company; a 13G by one who states it is a passive investor. An amendment updates an earlier filing, and a stake reported as 0% means the holder says it has sold all, or nearly all, of its shares. Every recent 13D and 13G

  1. Darlington Partners Capital Management, LP filed Aug 14, 2026 Schedule 13G/A passive filing 7.5%
  2. BlackRock, Inc. filed Jul 30, 2026 Schedule 13G/A passive 14,734,649 shares filing 14.4%

Company reports · SEC Form 8-K

In its own words

Current reports the company filed with the SEC; most items are due within four business days of the event. Each line lists the report's items by the SEC's own titles; the filing says what happened. Reports collected since May 26, 2026; every 8-K at the SEC.

  1. Results of operations and financial condition; Regulation FD disclosure filing Nov 5, 2026

Sources: SEC EDGAR (Forms 4, 144 and 8-K) and STOCK Act periodic transaction reports. Filings can be late, amended or wrong at the source; see methodology.