ULCC

SEC source: 0001562180-25-001472 · primarydocument.xml · nonDerivative · entry 2

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,086

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.00 to $9.18, 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: 0001562180-25-001472 · primarydocument.xml · nonDerivative · entry 1

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 190,410

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.

SEC source: 0001562180-25-001402 · primarydocument.xml · nonDerivative · entry 1

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 172,105

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.00 to $9.25, 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: 0001562180-25-001403 · primarydocument.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 307,592

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.75 to $9.20, 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: 0001562180-25-001401 · primarydocument.xml · nonDerivative · entry 1

Wetzel Josh A · CIK 0001911236 · VP & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,198

SEC source: 0001562180-25-001277 · primarydocument.xml · nonDerivative · entry 1

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 490,419

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.67 to $8.87, 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: 0001562180-25-001100 · primarydocument.xml · derivative · entry 6

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,299

Underlying: Common Stock · 2,644 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 on February 8, 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: 0001562180-25-001100 · primarydocument.xml · derivative · entry 5

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,055

Underlying: Common Stock · 6,054 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 on February 8, 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: 0001562180-25-001100 · primarydocument.xml · nonDerivative · entry 4

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,330

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001100 · primarydocument.xml · nonDerivative · entry 3

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,090

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: 0001562180-25-001100 · primarydocument.xml · nonDerivative · entry 2

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,446

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001100 · primarydocument.xml · nonDerivative · entry 1

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,186

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: 0001562180-25-001099 · primarydocument.xml · derivative · entry 6

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,471

Underlying: Common Stock · 3,706 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 on February 8, 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: 0001562180-25-001099 · primarydocument.xml · derivative · entry 5

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,657

Underlying: Common Stock · 3,657 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 on February 8, 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: 0001562180-25-001099 · primarydocument.xml · nonDerivative · entry 4

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,086

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001099 · primarydocument.xml · nonDerivative · entry 3

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,707

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: 0001562180-25-001099 · primarydocument.xml · nonDerivative · entry 2

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,001

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001099 · primarydocument.xml · nonDerivative · entry 1

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 111,600

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: 0001562180-25-001097 · primarydocument.xml · derivative · entry 6

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,262

Underlying: Common Stock · 5,262 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 on February 8, 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: 0001562180-25-001097 · primarydocument.xml · derivative · entry 5

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,150

Underlying: Common Stock · 24,150 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 on February 8, 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: 0001562180-25-001097 · primarydocument.xml · nonDerivative · entry 4

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 790,419

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001097 · primarydocument.xml · nonDerivative · entry 3

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 792,427

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: 0001562180-25-001097 · primarydocument.xml · nonDerivative · entry 2

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 787,165

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001097 · primarydocument.xml · nonDerivative · entry 1

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 794,108

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: 0001562180-25-001101 · 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: 12,255

Underlying: Common Stock · 12,255 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 on February 8, 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: 0001562180-25-001101 · 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: 191,436

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001101 · 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: 194,959

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: 0001562180-25-001098 · primarydocument.xml · derivative · entry 6

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,442

Underlying: Common Stock · 11,331 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 on February 8, 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: 0001562180-25-001098 · primarydocument.xml · derivative · entry 5

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,328

Underlying: Common Stock · 11,328 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 on February 8, 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: 0001562180-25-001098 · primarydocument.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 634,173

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001098 · primarydocument.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 637,430

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: 0001562180-25-001098 · primarydocument.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 626,099

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001098 · primarydocument.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 630,104

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: 0001562180-25-001102 · primarydocument.xml · derivative · entry 6

Wetzel Josh A · CIK 0001911236 · VP & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,337

Underlying: Common Stock · 3,337 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 on February 8, 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: 0001562180-25-001102 · primarydocument.xml · derivative · entry 5

Wetzel Josh A · CIK 0001911236 · VP & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,902

Underlying: Common Stock · 4,902 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 on February 8, 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: 0001562180-25-001102 · primarydocument.xml · nonDerivative · entry 4

Wetzel Josh A · CIK 0001911236 · VP & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,198

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001102 · primarydocument.xml · nonDerivative · entry 3

Wetzel Josh A · CIK 0001911236 · VP & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,156

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: 0001562180-25-001102 · primarydocument.xml · nonDerivative · entry 2

Wetzel Josh A · CIK 0001911236 · VP & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,819

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 February 8, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-001102 · primarydocument.xml · nonDerivative · entry 1

Wetzel Josh A · CIK 0001911236 · VP & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,349

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: 0001562180-25-001096 · primarydocument.xml · derivative · entry 9

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,897

Underlying: Common Stock · 9,897 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.

F4 · 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.

F7 · derivative.exercise_date: The remaining Restricted Stock Units vest on February 8, 2026.

F4 · 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: 0001562180-25-001096 · primarydocument.xml · derivative · entry 8

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 56,280

Underlying: Common Stock · 56,280 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.

F4 · 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.

F7 · derivative.exercise_date: The remaining Restricted Stock Units vest on February 8, 2026.

F4 · 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: 0001562180-25-001096 · primarydocument.xml · nonDerivative · entry 4

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,223,882

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.

F3 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F4 · 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: 0001562180-25-001096 · primarydocument.xml · nonDerivative · entry 3

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,213,985

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.

F3 · kind: Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.

F4 · 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: 0001562180-25-001096 · primarydocument.xml · derivative · entry 7

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 309,580 shares

Expires 2026-03-15

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.

F6 · derivative.exercise_date: The stock options are fully vested and exercisable.

SEC source: 0001562180-25-001096 · primarydocument.xml · nonDerivative · entry 2

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,157,705

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 14, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.38 to $9.44, 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: 0001562180-25-001096 · primarydocument.xml · nonDerivative · entry 1

Biffle Barry · CIK 0001511298 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,590,705

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.

SEC source: 0001562180-25-001062 · primarydocument.xml · derivative · entry 1

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,263

Underlying: Common Stock · 43,263 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 three substantially equal annual installments beginning on February 6, 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: 0001562180-25-001063 · primarydocument.xml · derivative · entry 1

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,263

Underlying: Common Stock · 43,263 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 three substantially equal annual installments beginning on February 6, 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: 0001562180-25-001061 · primarydocument.xml · derivative · entry 1

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,263

Underlying: Common Stock · 43,263 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 three substantially equal annual installments beginning on February 6, 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: 0001562180-25-001065 · primarydocument.xml · derivative · entry 1

Dempsey James G. · CIK 0001854054 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 111,248

Underlying: Common Stock · 111,248 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 three substantially equal annual installments beginning on February 6, 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.