Insider Ledger
FUN insider buying and SEC filings, explained
Six Flags Entertainment Corporation · CIK 1999001
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- NYSE
- Industry (SIC)
- Services-Amusement & Recreation Services
- State of incorporation
- DE
- Fiscal year end
- Dec 31
- Former names
- CopperSteel HoldCo, Inc.
Insider activity in the last 12 months
Bought
$6.2M
Insiders who bought
3
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 12, 2026 | Purchase (code P) | John T Reilly (CEO and Director) bought 15,713 shares at $15.80 ($248K), reported as a purchase (code P). Holdings up 6% to 297,736 shares. | SEC filing Filed Aug 12, 2026 |
| Jun 12–15, 2026 | Purchase (code P) | Rehan Jaffer (Director) bought 250,000 shares indirectly between Jun 12 and Jun 15 at about $23.55 ($5.9M), reported as a purchase (code P). Indirect holdings up 5% to 4,900,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 16, 2026 |
| May 21, 2026 | Purchase (code P) | Marilyn G Spiegel (Director) bought 2,500 shares at $19.10 ($48K), reported as a purchase (code P). Holdings up 20% to 15,161 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 26, 2026 |
| May 12, 2026 | Purchase (code P) | Richard M. Haddrill (Chair and Director) bought 10,000 shares at $19.08 ($191K), reported as a purchase (code P). Holdings up 5% to 230,117 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 14, 2026 |
| May 12, 2026 | Purchase (code P) | Marilyn G Spiegel (Director) bought 2,500 shares at $19.13 ($48K), reported as a purchase (code P). Holdings up 25% to 12,661 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 14, 2026 |
28 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
3 insiders bought in 30 days
$6.2M in purchases since May 12, 2026 · Purchases traded May 12, 2026 to Jun 15, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Marilyn G Spiegel (Director) | $48K | May 12, 2026 | SEC filing |
| Richard M. Haddrill (Chair) | $191K | May 12, 2026 | SEC filing |
| Marilyn G Spiegel (Director) | $48K | May 21, 2026 | SEC filing |
| Rehan Jaffer (Director) | $5.9M | Jun 15, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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