{"transactions":[{"id":775802,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":46594,"kind":"person","name":"FRANKE WILLIAM A","position":1,"cik":"0000929613","reported_name":"FRANKE WILLIAM A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"Chair of the Board"}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-18T16:15:07.000Z","date":"2026-05-14","kind":"grant","planned":false,"acquired":true,"shares":32990,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs will vest in full on the earlier of May 14, 2027 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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date."}],"balance_after":32990,"derivative":{"underlying":"Common Stock","underlying_shares":32990},"source":{"system":"sec-edgar","filing":"0001193125-26-228942","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/929613/000119312526228942/ownership.xml","form_type":"4"}},{"id":775801,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":46594,"kind":"person","name":"FRANKE WILLIAM A","position":1,"cik":"0000929613","reported_name":"FRANKE WILLIAM A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"Chair of the Board"}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-18T16:15:07.000Z","date":"2026-05-14","kind":"exercise","planned":false,"acquired":false,"shares":34230,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSUs have fully vested as of May 14, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":34230},"source":{"system":"sec-edgar","filing":"0001193125-26-228942","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/929613/000119312526228942/ownership.xml","form_type":"4"}},{"id":775800,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":46594,"kind":"person","name":"FRANKE WILLIAM A","position":1,"cik":"0000929613","reported_name":"FRANKE WILLIAM A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"Chair of the Board"}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-05-18T16:15:07.000Z","date":"2026-05-14","kind":"exercise","planned":false,"acquired":true,"shares":34230,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date."}],"balance_after":67362528,"source":{"system":"sec-edgar","filing":"0001193125-26-228942","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/929613/000119312526228942/ownership.xml","form_type":"4"}},{"id":1143724,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":46594,"kind":"person","name":"FRANKE WILLIAM A","position":1,"cik":"0000929613","reported_name":"FRANKE WILLIAM A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"Chair of the Board"}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-05-19T16:05:30.000Z","date":"2025-05-15","kind":"grant","planned":false,"acquired":true,"shares":34230,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date."}],"balance_after":34230,"derivative":{"underlying":"Common Stock","underlying_shares":34230},"source":{"system":"sec-edgar","filing":"0000950170-25-074326","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/929613/000095017025074326/ownership.xml","form_type":"4"}},{"id":1143723,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":46594,"kind":"person","name":"FRANKE WILLIAM A","position":1,"cik":"0000929613","reported_name":"FRANKE WILLIAM A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"Chair of the Board"}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-05-19T16:05:30.000Z","date":"2025-05-15","kind":"exercise","planned":false,"acquired":false,"shares":24955,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSUs have fully vested as of May 15, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":24955},"source":{"system":"sec-edgar","filing":"0000950170-25-074326","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/929613/000095017025074326/ownership.xml","form_type":"4"}},{"id":1143722,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":46594,"kind":"person","name":"FRANKE WILLIAM A","position":1,"cik":"0000929613","reported_name":"FRANKE WILLIAM A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"Chair of the Board"}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-05-19T16:05:30.000Z","date":"2025-05-15","kind":"exercise","planned":false,"acquired":true,"shares":24955,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date."}],"balance_after":67328298,"source":{"system":"sec-edgar","filing":"0000950170-25-074326","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/929613/000095017025074326/ownership.xml","form_type":"4"}},{"id":1500998,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":46594,"kind":"person","name":"FRANKE WILLIAM A","position":1,"cik":"0000929613","reported_name":"FRANKE WILLIAM A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"Chair of the Board"}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-05-28T18:29:05.000Z","date":"2024-05-23","kind":"grant","planned":false,"acquired":true,"shares":24955,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs will vest in full on the earlier of May 23, 2025 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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date."}],"balance_after":24955,"derivative":{"underlying":"Common Stock","underlying_shares":24955},"source":{"system":"sec-edgar","filing":"0000950170-24-065488","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/929613/000095017024065488/ownership.xml","form_type":"4"}},{"id":1500997,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":46594,"kind":"person","name":"FRANKE WILLIAM A","position":1,"cik":"0000929613","reported_name":"FRANKE WILLIAM A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"Chair of the Board"}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Restricted Stock Units","published_at":"2024-05-28T18:29:05.000Z","date":"2024-05-23","kind":"exercise","planned":false,"acquired":false,"shares":17722,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSUs have fully vested as of May 23, 2024."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":17722},"source":{"system":"sec-edgar","filing":"0000950170-24-065488","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/929613/000095017024065488/ownership.xml","form_type":"4"}},{"id":1500996,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":46594,"kind":"person","name":"FRANKE WILLIAM A","position":1,"cik":"0000929613","reported_name":"FRANKE WILLIAM A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"Chair of the Board"}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-05-28T18:29:05.000Z","date":"2024-05-23","kind":"exercise","planned":false,"acquired":true,"shares":17722,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Issuer Common Stock. The RSUs have no expiration date."}],"balance_after":67303343,"source":{"system":"sec-edgar","filing":"0000950170-24-065488","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/929613/000095017024065488/ownership.xml","form_type":"4"}},{"id":1544841,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":46594,"kind":"person","name":"FRANKE WILLIAM A","position":1,"cik":"0000929613","reported_name":"FRANKE WILLIAM A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":true,"other_text":"Chair of the Board"}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-04-09T16:05:13.000Z","date":"2024-04-05","kind":"other","planned":false,"acquired":false,"shares":178834034,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Indigo Frontier Holdings Company, LLC"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents a pro-rata distribution in-kind by Indigo Frontier Holdings Company, LLC to its members for no consideration (the \"Distribution\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are held directly by Indigo Frontier Holdings Company, LLC. William A. Franke is the sole member of Indigo Denver Management Company, LLC, which is the managing member of Indigo Frontier Holdings Company, LLC, and as such, Mr. Franke may be deemed to have voting and dispositive power over these shares. Mr. Franke disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-24-042959","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/929613/000095017024042959/ownership.xml","form_type":"4"}},{"id":2755943,"issuer":{"id":4796,"kind":"organization","name":"Frontier Group Holdings, Inc.","symbol":"ULCC"},"owners":[{"id":92121,"kind":"organization","name":"Indigo Frontier Holdings Company, LLC","position":1,"cik":"0001854047","reported_name":"Indigo Frontier Holdings Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46595,"kind":"organization","name":"Indigo Denver Management Company, LLC","position":2,"cik":"0001854279","reported_name":"Indigo Denver Management Company, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common","published_at":"2021-04-06T21:13:29.000Z","date":"2021-04-06","kind":"sale","acquired":false,"shares":18765966,"price":19,"value":356553354.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These shares were sold by the reporting persons as a selling stockholder in conjuction with the Issuer's Form S-1 filing, Registration Number 333-254004. The offering closed on April 6, 2021. The reported sale price reflects the price at which the reporting persons sold shares to the underwriter."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These shares were sold by the reporting persons as a selling stockholder in conjuction with the Issuer's Form S-1 filing, Registration Number 333-254004. The offering closed on April 6, 2021. The reported sale price reflects the price at which the reporting persons sold shares to the underwriter."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are held directly by Indigo Frontier Holdings Company, LLC.   William A. Franke is a member of the Issuer's Board of Directors and the sole member of Indigo Denver Management Company, LLC, which is the managing member of Indigo Frontier Holdings Company, LLC."}],"balance_after":178834034,"source":{"system":"sec-edgar","filing":"0000899243-21-015112","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1854279/000089924321015112/doc4.xml","form_type":"4"}}]}