[144] Sun Country Airlines Holdings, Inc. SEC Filing

Rhea-AI Filing Summary

Form 144 notice for Sun Country Airlines Holdings, Inc. (SNCY) reports a proposed sale of 704 common shares through Fidelity Brokerage Services LLC with an aggregate market value of $9,384.32. The shares are scheduled for sale on 09/03/2025 on NASDAQ. The 704 shares were acquired by restricted stock vesting as 8 shares on 03/31/2025 and 696 shares on 06/30/2025, with the acquisition characterized as compensation. The filing also discloses prior sales by John M. Gyurci of 3,150 shares on 06/12/2025 (gross proceeds $36,193.50) and 309 shares on 07/01/2025 (gross proceeds $3,619.62). The filer certifies no undisclosed material adverse information and includes the required representations for Rule 144 compliance.

Positive

• Disclosure appears complete for the proposed sale: acquisition dates, nature (compensation), broker, and sale date are provided
• Securities originate from restricted stock vesting, which clarifies the basis for sale and is a routine compensation outcome

Negative

• Insider executed prior sales in the past three months (3,150 shares on 06/12/2025 and 309 shares on 07/01/2025), which increases recent insider selling activity disclosure requirements

Insights

Securities Compliance Analyst

TL;DR: Routine Rule 144 filing documenting sale of recently vested restricted stock; appears procedural and compliant.

The notice records a proposed sale of 704 shares derived entirely from restricted stock vesting, with clear acquisition dates and compensation as the payment nature. The use of a registered broker and the Rule 144 disclosure language indicate the filer is following standard insider-sale procedures. The filing includes recent prior sales by the same individual, which is relevant for aggregation under Rule 144 but does not itself indicate noncompliance. No material undisclosed information is asserted in the form.

Equity Research Analyst

TL;DR: Small insider sale relative to company size; informational for share-supply tracking but not material.

The 704-share proposed sale represents a very small volume versus the reported 53,316,378 shares outstanding. The shares originate from compensation-related vesting rather than open-market purchases, which clarifies the supply source. Prior sales of 3,150 and 309 shares are disclosed; while useful for monitoring insider activity, these transactions are minor in absolute terms and unlikely to affect company valuation materially.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	704	9384.32	53316378	09/03/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/31/2025	Restricted Stock Vesting	Issuer			8	03/31/2025	Compensation
Common	06/30/2025	Restricted Stock Vesting	Issuer			696	06/30/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
John M. Gyurci 2005 Cargo Road Minneapolis MN 55450	Common	06/12/2025	3150	36193.50
John M. Gyurci 2005 Cargo Road Minneapolis MN 55450	Common	07/01/2025	309	3619.62

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many shares does the Form 144 propose to sell for SNCY?

The notice proposes the sale of 704 common shares.

When is the approximate sale date listed on the Form 144 for SNCY?

The filing lists the approximate sale date as 09/03/2025.

What is the aggregate market value of the shares to be sold under the Form 144?

The aggregate market value is reported as $9,384.32.

How were the 704 shares acquired according to the filing?

The shares were acquired by restricted stock vesting: 8 shares on 03/31/2025 and 696 shares on 06/30/2025, recorded as compensation.

Which broker is handling the proposed sale in the Form 144?

The broker named is Fidelity Brokerage Services LLC located at 900 Salem Street, Smithfield RI 02917.

Were there any sales by the same person in the past three months disclosed in the filing?

Yes. The filing discloses sales by John M. Gyurci of 3,150 shares on 06/12/2025 (gross proceeds $36,193.50) and 309 shares on 07/01/2025 (gross proceeds $3,619.62).