Frontier Group Holdings (ULCC) CEO Barry Biffle discloses insider share sales

Rhea-AI Filing Summary

Frontier Group Holdings, Inc. CEO and director Barry L. Biffle reported open-market sales of company common stock. On 12/10/2025 he sold 17,373 shares at a weighted average price of $6.0106, and on 12/11/2025 he sold 82,627 shares at a weighted average price of $5.7811. After these transactions, he beneficially owned 631,836 shares of Frontier common stock directly. The sales were made under a Rule 10b5-1 trading plan adopted on August 8, 2025.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Biffle Barry

(Last) (First) (Middle)

C/O FRONTIER GROUP HOLDINGS INC.

4545 AIRPORT WAY

(Street)

DENVER CO 80239

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Frontier Group Holdings, Inc. [ ULCC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CEO

3. Date of Earliest Transaction (Month/Day/Year)
12/10/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/10/2025		S(1)		17,373	D	$6.0106(2)	714,463	D
Common Stock	12/11/2025		S(1)		82,627	D	$5.7811(3)	631,836	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. 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.

3. 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.

Remarks:

	/s/ Howard Diamond, as Attorney-in-fact for Barry L. Biffle	12/12/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Frontier Group Holdings (ULCC) disclose?

Frontier Group Holdings, Inc. disclosed that CEO and director Barry L. Biffle sold shares of the company’s common stock in open-market transactions on 12/10/2025 and 12/11/2025.

How many ULCC shares did CEO Barry L. Biffle sell in this filing?

Barry L. Biffle sold 17,373 shares of Frontier Group Holdings common stock on 12/10/2025 and 82,627 shares on 12/11/2025.

At what prices were the Frontier Group Holdings (ULCC) shares sold?

The 12/10/2025 sale was at a weighted average price of $6.0106, with individual trades ranging from $6.01 to $6.02. The 12/11/2025 sale was at a weighted average price of $5.7811, with trades ranging from $5.72 to $5.87.

Does Barry L. Biffle still hold Frontier Group Holdings (ULCC) stock after these sales?

Yes. After the reported transactions, Barry L. Biffle beneficially owned 631,836 shares of Frontier Group Holdings common stock directly.

Were the ULCC insider sales made under a Rule 10b5-1 trading plan?

Yes. The filing states that the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Barry L. Biffle on August 8, 2025.

Who is the reporting person in this ULCC insider transaction?

The reporting person is Barry L. Biffle, who is identified as both a director and an officer (CEO) of Frontier Group Holdings, Inc.