Barry L. Biffle - 10 Dec 2025 Form 4 Insider Report for Frontier Group Holdings, Inc. (ULCC)

Reporting relationship: CEO, Director
Issuer ticker: ULCC
Reported as of: 10 Dec 2025
Net transaction value: -$582,097
SEC form: 4
Accepted by SEC: 12 Dec 2025, 16:55:32 UTC
Prior SEC filing: 08 Dec 2025
Source filing: View source filing
Reporting owner signature: /s/ Howard Diamond, as Attorney-in-fact for Barry L. Biffle

Key filing fact

Barry L. Biffle filed Form 4 for Frontier Group Holdings, Inc. (ULCC) on 12 Dec 2025.

Key facts

This page summarizes Barry L. Biffle's Form 4 filing for Frontier Group Holdings, Inc. (ULCC).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 12 Dec 2025, 16:55.

Change

Previous filing in this sequence was filed on 08 Dec 2025.
Current net transaction value: -$582,097.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001511298 Primary reporting owner

Biffle Barry

Relationship: CEO, Director
Address: C/O FRONTIER GROUP HOLDINGS INC., 4545 AIRPORT WAY, DENVER
Signature: /s/ Howard Diamond, as Attorney-in-fact for Barry L. Biffle
Signature date: 12 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ULCC transaction

Common Stock

Sale

Transaction value: $104,422
Shares: -17,373
Change %: -2.4%
Price: $6.01
Shares after: 714,463
Date: 10 Dec 2025
Ownership: Direct
Footnotes: F1, F2

ULCC transaction

Common Stock

Sale

Transaction value: $477,675
Shares: -82,627
Change %: -12%
Price: $5.78
Shares after: 631,836
Date: 11 Dec 2025
Ownership: Direct
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote F1

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

Footnote F2

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

Footnote F3

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