ULCC

SEC source: 0001677476-25-000002 · primarydocument.xml · nonDerivative · entry 1

Schroeter Robert · CIK 0001677476 · SVP, Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,914

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.75 to $4.77, 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.

SEC source: 0001562180-25-006032 · primarydocument.xml · nonDerivative · entry 1

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,427

SEC source: 0001562180-25-004443 · primarydocument.xml · nonDerivative · entry 1

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,912

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.88 to $3.91, 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: 0000950170-25-074326 · ownership.xml · derivative · entry 6

FRANKE WILLIAM A · CIK 0000929613 · Director · 10% owner · Chair of the Board

Indigo Denver Management Company, LLC · CIK 0001854279 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,230

Underlying: Common Stock · 34,230 shares

Expires not disclosed

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

F4 · derivative.exercise_date: The RSUs will vest in full on the earlier of May 15, 2026 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date.

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

SEC source: 0000950170-25-074326 · ownership.xml · derivative · entry 5

FRANKE WILLIAM A · CIK 0000929613 · Director · 10% owner · Chair of the Board

Indigo Denver Management Company, LLC · CIK 0001854279 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,955 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.

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

F3 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0000950170-25-074326 · ownership.xml · nonDerivative · entry 1

FRANKE WILLIAM A · CIK 0000929613 · Director · 10% owner · Chair of the Board

Indigo Denver Management Company, LLC · CIK 0001854279 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,328,298

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-003987 · primarydocument.xml · derivative · entry 3

Kumpf Ofelia · CIK 0001871709 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,230

Underlying: Common Stock · 34,230 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The RSUs will vest in full on the earlier of May 15, 2026 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date.

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

SEC source: 0001562180-25-003987 · primarydocument.xml · derivative · entry 2

Kumpf Ofelia · CIK 0001871709 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,955 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.

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

F2 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0001562180-25-003987 · primarydocument.xml · nonDerivative · entry 1

Kumpf Ofelia · CIK 0001871709 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,179

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-003991 · primarydocument.xml · derivative · entry 3

Connor Josh T. · CIK 0001853987 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,230

Underlying: Common Stock · 34,230 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The RSUs will vest in full on the earlier of May 15, 2026 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date.

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

SEC source: 0001562180-25-003991 · primarydocument.xml · derivative · entry 2

Connor Josh T. · CIK 0001853987 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,955 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.

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

F2 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0001562180-25-003991 · primarydocument.xml · nonDerivative · entry 1

Connor Josh T. · CIK 0001853987 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 141,505

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-003989 · primarydocument.xml · derivative · entry 3

Broderick Andrew S. · CIK 0001853369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,230

Underlying: Common Stock · 34,230 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The RSUs will vest in full on the earlier of May 15, 2026 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date.

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

SEC source: 0001562180-25-003989 · primarydocument.xml · derivative · entry 2

Broderick Andrew S. · CIK 0001853369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,955 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.

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

F2 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0001562180-25-003989 · primarydocument.xml · nonDerivative · entry 1

Broderick Andrew S. · CIK 0001853369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 848,441

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-003992 · primarydocument.xml · derivative · entry 3

Genise Robert J. · CIK 0001853399 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,230

Underlying: Common Stock · 34,230 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The RSUs will vest in full on the earlier of May 15, 2026 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date.

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

SEC source: 0001562180-25-003992 · primarydocument.xml · derivative · entry 2

Genise Robert J. · CIK 0001853399 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,955 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.

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

F2 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0001562180-25-003992 · primarydocument.xml · nonDerivative · entry 1

Genise Robert J. · CIK 0001853399 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 360,534

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-003995 · primarydocument.xml · derivative · entry 4

Franke Brian H. · CIK 0001853437 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,230

Underlying: Common Stock · 34,230 shares

Expires not disclosed

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

F4 · derivative.exercise_date: The RSUs will vest in full on the earlier of May 15, 2026 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date.

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

SEC source: 0001562180-25-003995 · primarydocument.xml · derivative · entry 3

Franke Brian H. · CIK 0001853437 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,955 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.

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

F3 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0001562180-25-003995 · primarydocument.xml · nonDerivative · entry 1

Franke Brian H. · CIK 0001853437 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,495,115

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-003990 · primarydocument.xml · derivative · entry 3

Lipson Nancy · CIK 0001778040 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,230

Underlying: Common Stock · 34,230 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The RSUs will vest in full on the earlier of May 15, 2026 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date.

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

SEC source: 0001562180-25-003990 · primarydocument.xml · derivative · entry 2

Lipson Nancy · CIK 0001778040 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 26,294 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.

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

F2 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0001562180-25-003990 · primarydocument.xml · nonDerivative · entry 1

Lipson Nancy · CIK 0001778040 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,294

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-003996 · primarydocument.xml · derivative · entry 3

Pineda Patricia Salas · CIK 0001769208 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,230

Underlying: Common Stock · 34,230 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The RSUs will vest in full on the earlier of May 15, 2026 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date.

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

SEC source: 0001562180-25-003996 · primarydocument.xml · derivative · entry 2

Pineda Patricia Salas · CIK 0001769208 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,955 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.

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

F2 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0001562180-25-003996 · primarydocument.xml · nonDerivative · entry 1

Pineda Patricia Salas · CIK 0001769208 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,533

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-003994 · primarydocument.xml · derivative · entry 2

MacDonald Michael R · CIK 0001460635 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,955 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.

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

F2 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0001562180-25-003994 · primarydocument.xml · nonDerivative · entry 1

MacDonald Michael R · CIK 0001460635 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,227

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-003993 · primarydocument.xml · derivative · entry 3

HAN BERNARD L · CIK 0001245319 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,230

Underlying: Common Stock · 34,230 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The RSUs will vest in full on the earlier of May 15, 2026 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date.

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

SEC source: 0001562180-25-003993 · primarydocument.xml · derivative · entry 2

HAN BERNARD L · CIK 0001245319 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,955 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.

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

F2 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0001562180-25-003993 · primarydocument.xml · nonDerivative · entry 1

HAN BERNARD L · CIK 0001245319 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 414,627

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-003988 · primarydocument.xml · derivative · entry 3

Wolff Alejandro Daniel · CIK 0001585657 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,230

Underlying: Common Stock · 34,230 shares

Expires not disclosed

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

F3 · derivative.exercise_date: The RSUs will vest in full on the earlier of May 15, 2026 or immediately prior to the next annual meeting of stockholders after the grant date, subject to continued service of the Reporting Person through the vesting date.

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

SEC source: 0001562180-25-003988 · primarydocument.xml · derivative · entry 2

Wolff Alejandro Daniel · CIK 0001585657 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,955 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.

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

F2 · derivative.exercise_date: The RSUs have fully vested as of May 15, 2025.

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

SEC source: 0001562180-25-003988 · primarydocument.xml · nonDerivative · entry 1

Wolff Alejandro Daniel · CIK 0001585657 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,183

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 · price: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date.

SEC source: 0001562180-25-002755 · primarydocument.xml · derivative · entry 6

Schroeter Robert · CIK 0001677476 · SVP, Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,909

Underlying: Common Stock · 39,954 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 vest in two substantially equal annual installments beginning on March 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: 0001562180-25-002755 · primarydocument.xml · derivative · entry 5

Schroeter Robert · CIK 0001677476 · SVP, Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,425

Underlying: Common Stock · 42,808 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 three substantially equal annual installments beginning on March 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: 0001562180-25-002755 · primarydocument.xml · nonDerivative · entry 4

Schroeter Robert · CIK 0001677476 · SVP, Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,969

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 March 25, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-002755 · primarydocument.xml · nonDerivative · entry 3

Schroeter Robert · CIK 0001677476 · SVP, Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,455

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: 0001562180-25-002755 · primarydocument.xml · nonDerivative · entry 2

Schroeter Robert · CIK 0001677476 · SVP, Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,501

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 Person on March 25, 2025, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

SEC source: 0001562180-25-002755 · primarydocument.xml · nonDerivative · entry 1

Schroeter Robert · CIK 0001677476 · SVP, Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,808

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: 0001562180-25-002284 · primarydocument.xml · nonDerivative · entry 1

Clerc Alexandre · CIK 0002007448 · SVP, Customers

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,912

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.63 to $6.65, 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: 0001562180-25-002257 · primarydocument.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 167,405

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.11 to $7.12, 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 · derivative · entry 6

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 80,479 shares

Expires 2025-09-18

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

SEC source: 0001562180-25-001472 · 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

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.45 to $8.56, 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 3

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 192,565

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: 0001562180-25-001536 · primarydocument.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,886

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.70 to $8.84, 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 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 263,716

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.15 to $9.23, 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: 0001562180-25-001471 · primarydocument.xml · nonDerivative · entry 1

Schuller Steve · CIK 0002011128 · SVP, Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,330

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.07 to $9.11, 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 · derivative · entry 5

Mitchell Mark Christopher · CIK 0001854386 · SVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,479

Underlying: Common Stock · 78,324 shares

Expires 2025-09-18

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