Frontier Group CFO receives 43,403 vested shares

Q: How many ULCC shares did Frontier CFO Mark Christopher Mitchell receive?

Mitchell acquired 43,403 shares of Frontier common stock when 43,403 previously granted restricted stock units vested on October 16, 2026. Each unit represented a contingent right to receive one share.

Q: Were ULCC shares sold by Mark Christopher Mitchell in the October 16 RSU transaction?

No. The issuer withheld 19,104 shares solely to satisfy tax withholding obligations in connection with the net issuance, and the footnote states this did not represent a sale by Mitchell.

The issuer withheld 19,104 shares at $5.03 each for tax obligations, and the footnote clarifies the withholding was not a sale.

Filing Impact

(Neutral)

Filing Sentiment

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Sentiment and the balance of points

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Form Type

Rhea-AI Filing Summary

Frontier Group Holdings, Inc. SVP & CFO Mark Christopher Mitchell reported the vesting and settlement of 43,403 restricted stock units into 43,403 shares of common stock on October 16, 2026. The issuer withheld 19,104 shares, reported at $5.03 per share, solely for tax withholding; the footnote says this was not a sale by Mitchell. The RSUs were fully vested as of that date, and no Rule 10b5-1 plan is reported.

Insider Trade Summary

43,403 shares exercised/converted

Exercise 3 txns

Insider Mitchell Mark Christopher

Role SVP & CFO

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units ^{F2, F4}	43,403	$0.00	$0.00
Exercise	Common Stock ^{F1, F2}	43,403	--	--
Tax Withholding	Common Stock ^F3	19,104	$5.03	$96K

Holdings After Transaction: Restricted Stock Units — 0 contracts (Direct); Common Stock — 78,084 shares (Direct)

Footnotes (4)

F1. Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person.
F2. Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.
F3. 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 October 16, 2026, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.
F4. The Restricted Stock Units have fully vested as of October 16, 2026.

Key Figures

Restricted stock units vested: 43,403 units Common shares acquired: 43,403 shares Shares withheld for tax withholding: 19,104 shares +1 more

4 metrics

Restricted stock units vested 43,403 units October 16, 2026

Common shares acquired 43,403 shares Upon vesting on October 16, 2026

Shares withheld for tax withholding 19,104 shares October 16, 2026

Price per share reported for withholding $5.03 per share Shares withheld for tax withholding on October 16, 2026

Key Terms

Restricted Stock Units, net issuance, tax withholding obligations

3 terms

Restricted Stock Units financial

"settlement of previously granted Restricted Stock Units upon vesting"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

net issuance financial

"in connection with the net issuance of shares"

tax withholding obligations financial

"solely to satisfy tax withholding obligations"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ULCC shares did Frontier CFO Mark Christopher Mitchell receive?

Mitchell acquired 43,403 shares of Frontier common stock when 43,403 previously granted restricted stock units vested on October 16, 2026. Each unit represented a contingent right to receive one share.

Were ULCC shares sold by Mark Christopher Mitchell in the October 16 RSU transaction?

No. The issuer withheld 19,104 shares solely to satisfy tax withholding obligations in connection with the net issuance, and the footnote states this did not represent a sale by Mitchell.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/20/2026 - 04:26 PM EDT Accepted by SEC EDGAR 10/20/2026 - 04:25 PM EDT

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
Estimated average burden
hours per response:			0.5

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

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^*

Mitchell Mark Christopher

(Last)

(First)

(Middle)

C/O FRONTIER GROUP HOLDINGS, INC.

4545 AIRPORT WAY

(Street)

DENVER

COLORADO

80239

(City)

(State)

(Zip)

UNITED STATES

(Country)

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

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP & CFO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/16/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	10/16/2026		M⁽¹⁾		43,403	A	⁽²⁾	97,188	D
Common Stock	10/16/2026		F		19,104⁽³⁾	D	$5.03	78,084	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽²⁾	10/16/2026		M			43,403	⁽⁴⁾	⁽²⁾	Common Stock	43,403	$0.00	0.00	D

Explanation of Responses:

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

2. Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date.

3. 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 October 16, 2026, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person.

4. The Restricted Stock Units have fully vested as of October 16, 2026.

Remarks:

	/s/ Howard Diamond, as Attorney-in-fact for Mark C. Mitchell	10/20/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR