FUN · Six Flags Entertainment Corporation · Insider Trading

The purchase reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2026.

These awards were granted pursuant to the Company's 2024 Omnibus Incentive Plan.

These awards were granted pursuant to the Company's 2024 Omnibus Incentive Plan.

These awards were granted pursuant to the Company's 2024 Omnibus Incentive Plan.

These awards were granted pursuant to the Company's 2024 Omnibus Incentive Plan.

These awards were granted pursuant to the Company's 2024 Omnibus Incentive Plan.

These awards were granted pursuant to the Company's 2024 Omnibus Incentive Plan.

These awards were granted pursuant to the Company's 2024 Omnibus Incentive Plan.

These awards were granted pursuant to the Company's 2024 Omnibus Incentive Plan.

These awards were granted pursuant to the Company's 2024 Omnibus Incentive Plan.

The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $23.0900 to $23.7700, inclusive. The reporting person undertakes to provide Issuer, any security holder of Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

Funds owned and managed by H Partners Management, LLC ("H Management") directly own the reported securities. As a result, the Reporting Person, as Founder and Managing Member of H Management, may be deemed to have voting and dispositive power with respect to the shares of common stock held by the managed funds. Mr. Jaffer disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such reporting person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $23.4500 to $24.0650, inclusive. The reporting person undertakes to provide Issuer, any security holder of Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

Funds owned and managed by H Partners Management, LLC ("H Management") directly own the reported securities. As a result, the Reporting Person, as Founder and Managing Member of H Management, may be deemed to have voting and dispositive power with respect to the shares of common stock held by the managed funds. Mr. Jaffer disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that such reporting person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Reflects a reduction of one share from prior reports due to rounding error.

This award was granted pursuant to the Company's 2024 Omnibus Incentive Plan.

Shares withheld in payment of tax liability in connection with the vesting of a previously reported awards of restricted stock and restricted stock units, which vested February 23, 2026.

Shares withheld in payment of tax liability in connection with the vesting of a previously reported awards of restricted stock and restricted stock units, which vested February 23, 2026.

Shares withheld in payment of tax liability in connection with the vesting of a previously reported awards of restricted stock and restricted stock units, which vested February 23, 2026.

Shares withheld in payment of tax liability in connection with the vesting of a previously reported awards of restricted stock and restricted stock units, which vested February 23, 2026.

Shares withheld in payment of tax liability in connection with the vesting of a previously reported awards of restricted stock and restricted stock units, which vested February 23, 2026.

Shares withheld in payment of tax liability in connection with the vesting of a previously reported awards of restricted stock and restricted stock units, which vested February 23, 2026.

Represents deferred stock units acquired by the reporting person (in an exempt transaction) as deferred compensation pursuant to the Company's omnibus plan. Each deferred stock unit is the economic equivalent of one share of common stock.

Deferred stock units granted in connection with service to the Board for 2026.

These deferred stock units are payable in cash, shares of common stock, or a combination of cash and shares of common stock when the individual's service to the Company ends.

Represents deferred stock units acquired by the reporting person (in an exempt transaction) as deferred compensation pursuant to the Company's omnibus plan. Each deferred stock unit is the economic equivalent of one share of common stock.

Deferred stock units granted in connection with service to the Board for 2026.

These deferred stock units are payable in cash, shares of common stock, or a combination of cash and shares of common stock when the individual's service to the Company ends.

Represents deferred stock units acquired by the reporting person (in an exempt transaction) as deferred compensation pursuant to the Company's omnibus plan. Each deferred stock unit is the economic equivalent of one share of common stock.

Deferred stock units granted in connection with service to the Board for 2026.

These deferred stock units are payable in cash, shares of common stock, or a combination of cash and shares of common stock when the individual's service to the Company ends.

Restricted stock granted in connection with service to the Board for 2026.

Represents deferred stock units acquired by the reporting person (in an exempt transaction) as deferred compensation pursuant to the Company's omnibus plan. Each deferred stock unit is the economic equivalent of one share of common stock.

Deferred stock units granted in connection with service to the Board for 2026.

These deferred stock units are payable in cash, shares of common stock, or a combination of cash and shares of common stock when the individual's service to the Company ends.

Represents deferred stock units acquired by the reporting person (in an exempt transaction) as deferred compensation pursuant to the Company's omnibus plan. Each deferred stock unit is the economic equivalent of one share of common stock.

Deferred stock units granted in connection with service to the Board for 2026.

These deferred stock units are payable in cash, shares of common stock or a combination of cash and shares of common stock when the individual's service to the Company ends.

Restricted stock granted in connection with service to the Board for 2026.

Each deferred share was the economic equivalent of one common share. On December 31, 2025, the reporting person's 7,162 deferred shares were settled for cash based on the closing price of Company's Common Stock on that date.

Each deferred share was the economic equivalent of one common share. On December 31, 2025, the reporting person's 7,162 deferred shares were settled for cash based on the closing price of Company's Common Stock on that date.

Represents shares withheld for payment of tax liability resulting from the accelerated vesting and settlement of the PSUs described in footnote 1 above.

Shares earned upon accelerated vesting and settlement of previously unreported Performance Stock Units ("PSUs"), in connection with the reporting person's departure from Six Flags Entertainment Corporation (the "Company").

Each deferred share was the economic equivalent of one common share. On December 24, 2025, the reporting person's 3,581 deferred shares were settled for cash based on the closing price of Company's Common Stock on that date.

Each deferred share was the economic equivalent of one common share. On December 24, 2025, the reporting person's 3,581 deferred shares were settled for cash based on the closing price of Company's Common Stock on that date.

Award of restricted stock units ("RSUs") under the Issuer's 2024 Omnibus Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest in three equal annual installments on each of the first three anniversaries of the grant date based on the continued service of the Reporting Person.

Represents shares withheld in payment of tax liability resulting from the accelerated vesting of previously reported restricted stock awards and restricted stock units, in connection with the reporting person's departure from Six Flags Entertainment Corporation (the "Company").

Represents shares withheld for payment of tax liability resulting from the accelerated vesting and settlement of the PSUs described in footnote 2 above.

Shares earned upon accelerated vesting and settlement of previously unreported Performance Stock Units ("PSUs"), in connection with the reporting person's departure from the Company.

Shares withheld in payment of tax liability in connection with the vesting of previously reported award of restricted stock, which vested August 22, 2025.

The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $24.4046 to $24.9775, inclusive. The reporting person undertakes to provide Issuer, any security holder of Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $24.00 to $24.93, inclusive. The reporting person undertakes to provide Issuer, any security holder of Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

Represents the settlement of deferred stock units granted to the reporting person on March 26, 2025, which settled upon the completion of his service to the Company.

Represents deferred stock units acquired by the reporting person (in an exempt transaction) as deferred compensation pursuant to the Company's omnibus plan. Each deferred stock unit is the economic equivalent of one share of common stock.

These deferred stock units are payable in shares of common stock, cash, or a combination of cash and shares of common stock when the individual's service to the Company ends.

Represents deferred stock units acquired by the reporting person (in an exempt transaction) as deferred compensation pursuant to the Company's omnibus plan. Each deferred stock unit is the economic equivalent of one share of common stock.

Deferred stock units granted in connection with prorated service to the Board in 2025.

These deferred stock units are payable in shares of common stock, cash, or a combination of cash and shares of common stock when the reporting person's service to the Company ends.

Restricted stock granted in connection with prorated service to the Board in 2025.

Represents deferred stock units acquired by the reporting person (in an exempt transaction) as deferred compensation pursuant to the Company's omnibus plan. Each deferred stock unit is the economic equivalent of one share of common stock.

Deferred stock units granted in connection with prorated service to the Board in 2025.

These deferred stock units are payable in shares of common stock, cash, or a combination of cash and shares of common stock when the reporting person's service to the Company ends.

Restricted stock granted in connection with prorated service to the Board in 2025.