ULCC

SEC source: 0002007448-26-000001 · primarydocument.xml · derivative · entry 6

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,417

Underlying: Common Stock · 9,416 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F5 · derivative.exercise_date: The remaining Restricted Stock Units fully vest on January 8, 2027.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0002007448-26-000001 · primarydocument.xml · derivative · entry 5

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 94,162

Underlying: Common Stock · 47,081 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F4 · derivative.exercise_date: The remaining Restricted Stock Units vest in two substantially equal annual installments beginning on January 8, 2027.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0002007448-26-000001 · primarydocument.xml · nonDerivative · entry 4

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,676

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting Person on January 8, 2026, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0002007448-26-000001 · primarydocument.xml · nonDerivative · entry 3

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,383

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0002007448-26-000001 · primarydocument.xml · nonDerivative · entry 2

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,967

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting Person on January 8, 2026, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0002007448-26-000001 · primarydocument.xml · nonDerivative · entry 1

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,708

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001854054-26-000001 · primarydocument.xml · derivative · entry 1

Dempsey James G. · CIK 0001854054 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,371

Underlying: Common Stock · 117,371 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Performance Stock Unit represents a contingent right to receive one share of Issuer Common Stock.

F2 · derivative.exercise_date: The Performance Stock Units will cliff vest on the fourth annual anniversary of the grant date, subject to the reporting person's continuing service to the Issuer through the date. The number of shares of Common Stock that will be earned, if any, is determined by a performance multiplier by dividing the average closing price of the Issuer's Common Stock as of the end of the four-year performance period (with a maximum capped at $30.00 per share) by the average closing price of the Issuer's Common Stock as of the beginning of the performance period. In addition, there will be no payout at the end of the performance period if the average share price is below 50% of the average share price as of the beginning of the performance period.

F2 · derivative.expiration_date: The Performance Stock Units will cliff vest on the fourth annual anniversary of the grant date, subject to the reporting person's continuing service to the Issuer through the date. The number of shares of Common Stock that will be earned, if any, is determined by a performance multiplier by dividing the average closing price of the Issuer's Common Stock as of the end of the four-year performance period (with a maximum capped at $30.00 per share) by the average closing price of the Issuer's Common Stock as of the beginning of the performance period. In addition, there will be no payout at the end of the performance period if the average share price is below 50% of the average share price as of the beginning of the performance period.

SEC source: 0001511298-25-000008 · primarydocument.xml · nonDerivative · entry 2

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 631,836

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 8, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.72 to $5.87, inclusive. The Reporting Person undertakes to provide to Frontier Group Holdings, Inc., any security holder of Frontier Group Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the price range set forth in this footnote.

SEC source: 0002011128-25-000004 · primarydocument.xml · nonDerivative · entry 1

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 77,312

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2024.

SEC source: 0001511298-25-000008 · primarydocument.xml · nonDerivative · entry 1

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 714,463

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 8, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.01 to $6.02, inclusive. The Reporting Person undertakes to provide to Frontier Group Holdings, Inc., any security holder of Frontier Group Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the price range set forth in this footnote.

SEC source: 0001511298-25-000007 · primarydocument.xml · nonDerivative · entry 3

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 731,836

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 8, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.53 to $5.58, inclusive. The Reporting Person undertakes to provide to Frontier Group Holdings, Inc., any security holder of Frontier Group Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the price range set forth in this footnote.

SEC source: 0001511298-25-000007 · primarydocument.xml · nonDerivative · entry 2

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 831,836

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 8, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.03 to $5.09, inclusive. The Reporting Person undertakes to provide to Frontier Group Holdings, Inc., any security holder of Frontier Group Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the price range set forth in this footnote.

SEC source: 0001511298-25-000007 · primarydocument.xml · nonDerivative · entry 1

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 876,649

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 8, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.03 to $5.06, inclusive. The Reporting Person undertakes to provide to Frontier Group Holdings, Inc., any security holder of Frontier Group Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the price range set forth in this footnote.

SEC source: 0002088895-25-000001 · primarydocument.xml · derivative · entry 1

Mathew Jeffrey · CIK 0002088895 · SVP, Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 261,780

Underlying: Common Stock · 261,780 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F2 · derivative.exercise_date: The Restricted Stock Units vest in four substantially equal annual installments beginning on September 22, 2026.

F1 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0002011128-25-000003 · primarydocument.xml · derivative · entry 3

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,042

Underlying: Common Stock · 26,042 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F4 · derivative.exercise_date: The remaining Restricted Stock Units fully vest on October 25, 2026.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0002011128-25-000003 · primarydocument.xml · nonDerivative · entry 2

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,312

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting on October 25, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0002011128-25-000003 · primarydocument.xml · nonDerivative · entry 1

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,372

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001854386-25-000003 · primarydocument.xml · derivative · entry 3

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,084

Underlying: Common Stock · 52,083 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F4 · derivative.exercise_date: The remaining Restricted Stock Units fully vest on October 25, 2026.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001854386-25-000003 · primarydocument.xml · nonDerivative · entry 2

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 165,798

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting on October 25, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001854386-25-000003 · primarydocument.xml · nonDerivative · entry 1

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 188,584

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001854054-25-000003 · primarydocument.xml · derivative · entry 3

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,250

Underlying: Common Stock · 156,250 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F4 · derivative.exercise_date: The remaining Restricted Stock Units fully vest on October 25, 2026.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001854054-25-000003 · primarydocument.xml · nonDerivative · entry 2

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 296,617

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting Person on October 25, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001854054-25-000003 · primarydocument.xml · nonDerivative · entry 1

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 364,976

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001853409-25-000002 · primarydocument.xml · derivative · entry 3

Stedke Trevor J. · CIK 0001853409 · Sr. Vice President, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,764

Underlying: Common Stock · 60,764 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F4 · derivative.exercise_date: The remaining Restricted Stock Units fully vest on October 25, 2026.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001853409-25-000002 · primarydocument.xml · nonDerivative · entry 2

Stedke Trevor J. · CIK 0001853409 · Sr. Vice President, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 233,954

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting on October 25, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001853409-25-000002 · primarydocument.xml · nonDerivative · entry 1

Stedke Trevor J. · CIK 0001853409 · Sr. Vice President, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 252,200

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001511298-25-000006 · primarydocument.xml · derivative · entry 3

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 234,375

Underlying: Common Stock · 234,375 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F4 · derivative.exercise_date: The remaining Restricted Stock Units fully vest on October 25, 2026.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001511298-25-000006 · primarydocument.xml · nonDerivative · entry 2

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 931,836

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting on October 25, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001511298-25-000006 · primarydocument.xml · nonDerivative · entry 1

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,034,375

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001671358-25-000004 · primarydocument.xml · derivative · entry 3

Diamond Howard · CIK 0001671358 · EVP, Legal & Corporate Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,934

Underlying: Common Stock · 62,934 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F4 · derivative.exercise_date: The remaining Restricted Stock Units fully vest on October 25, 2026.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001671358-25-000004 · primarydocument.xml · nonDerivative · entry 2

Diamond Howard · CIK 0001671358 · EVP, Legal & Corporate Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,596

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting on October 25, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001671358-25-000004 · primarydocument.xml · nonDerivative · entry 1

Diamond Howard · CIK 0001671358 · EVP, Legal & Corporate Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,129

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001911236-25-000003 · primarydocument.xml · derivative · entry 3

Wetzel Josh A · CIK 0001911236 · VP & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,361

Underlying: Common Stock · 17,361 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F4 · derivative.exercise_date: The remaining Restricted Stock Units fully vest on October 25, 2026.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001911236-25-000003 · primarydocument.xml · nonDerivative · entry 2

Wetzel Josh A · CIK 0001911236 · VP & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,568

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting on October 25, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001911236-25-000003 · primarydocument.xml · nonDerivative · entry 1

Wetzel Josh A · CIK 0001911236 · VP & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,559

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001854386-25-000002 · primarydocument.xml · derivative · entry 3

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,403

Underlying: Common Stock · 43,403 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F4 · derivative.exercise_date: The remaining Restricted Stock Units fully vest on October 16, 2026.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001854386-25-000002 · primarydocument.xml · nonDerivative · entry 2

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 136,501

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting on October 16, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001854386-25-000002 · primarydocument.xml · nonDerivative · entry 1

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 155,489

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001854054-25-000002 · primarydocument.xml · derivative · entry 3

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,105

Underlying: Common Stock · 65,104 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

F4 · derivative.exercise_date: The remaining Restricted Stock Units fully vest on October 16, 2026.

F2 · derivative.expiration_date: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0001854054-25-000002 · primarydocument.xml · nonDerivative · entry 2

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 208,726

F3 · shares: Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting on October 16, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001854054-25-000002 · primarydocument.xml · nonDerivative · entry 1

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 237,209

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F2 · price: Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

SEC source: 0002007448-25-000002 · primarydocument.xml · nonDerivative · entry 1

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,627

SEC source: 0001671358-25-000003 · primarydocument.xml · nonDerivative · entry 1

Diamond Howard · CIK 0001671358 · EVP, Legal & Corporate Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,195

SEC source: 0001671358-25-000002 · primarydocument.xml · nonDerivative · entry 2

Diamond Howard · CIK 0001671358 · EVP, Legal & Corporate Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,596

SEC source: 0002011128-25-000002 · primarydocument.xml · nonDerivative · entry 1

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 64,330

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2024.

SEC source: 0001853399-25-000002 · primarydocument.xml · nonDerivative · entry 1

Genise Robert J. · CIK 0001853399 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 330,534

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.51 to $5.53, inclusive. The Reporting Person undertakes to provide to Frontier Group Holdings, Inc., any security holder of Frontier Group Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the price range set forth in this footnote.

SEC source: 0001511298-25-000005 · primarydocument.xml · nonDerivative · entry 3

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spouse

Disclosed balance after: 0

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.55 to $5.64, inclusive. The Reporting Person undertakes to provide to Frontier Group Holdings, Inc., any security holder of Frontier Group Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the price range set forth in this footnote.

SEC source: 0001511298-25-000005 · primarydocument.xml · nonDerivative · entry 2

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Family Trust

Disclosed balance after: 0

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.51 to $5.99, inclusive. The Reporting Person undertakes to provide to Frontier Group Holdings, Inc., any security holder of Frontier Group Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the price range set forth in this footnote.

F3 · ownership.nature: These shares of Issuer Common Stock are held in a trust for the benefit of the Reporting Person's child. The Reporting Person's spouse is the trustee of the trust. The Reporting Person disclaims beneficial ownership of these shares of Issuer Common Stock, and the filing of this report is not an admission that the Reporting Person is the beneficial owner of these shares of Issuer Common Stock for purposes of Section 16 or for any other purpose.

SEC source: 0001511298-25-000005 · primarydocument.xml · nonDerivative · entry 1

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 800,000

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.50 to $6.04, inclusive. The Reporting Person undertakes to provide to Frontier Group Holdings, Inc., any security holder of Frontier Group Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the price range set forth in this footnote.

SEC source: 0001671358-25-000002 · primarydocument.xml · nonDerivative · entry 1

Diamond Howard · CIK 0001671358 · EVP, Legal & Corporate Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 141,099

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.63 to $5.77, inclusive. The Reporting Person undertakes to provide to Frontier Group Holdings, Inc., any security holder of Frontier Group Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the price range set forth in this footnote.