Christopher Michael Mangione - 16 Nov 2025 Form 3 Insider Report for Sun Country Airlines Holdings, Inc. (SNCY)

Role: Chief Acct. Off. & VP, Finance
Signature: /s/ Rose Neale, as attorney-in-fact for Christopher Mangione
Issuer symbol: SNCY
Transactions as of: 16 Nov 2025
Net transactions value: $0
Form type: 3
Filing time: 06 Jan 2026, 18:43:19 UTC
Next filing: 06 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Mangione Christopher Michael	Chief Acct. Off. & VP, Finance	C/O SUN COUNTRY AIRLINES HOLDINGS, INC., 2005 CARGO ROAD, MINNEAPOLIS	/s/ Rose Neale, as attorney-in-fact for Christopher Mangione	06 Jan 2026	0002103680

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	SNCY	Common Stock, par value $0.01 per share						6,871	16 Nov 2025	Direct	F1
holding	SNCY	Common Stock, par value $0.01 per share						237	16 Nov 2025	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents time-based restricted stock units previously granted to the reporting person, which are currently unvested. Grants have a graded vesting schedule. Vesting date varies for each grant.