# EDGAR Filing Document

**Accession Number:** 0001054973
**File Stem:** 0001193125-25-302638
**Filing Date:** 2025-11
**Character Count:** 7006
**Document Hash:** 6aa0d4dc1f3ece7e7bedccbf0ea73688
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-302638.hdr.sgml**: 20251128

**ACCESSION NUMBER**: 0001193125-25-302638

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251125

**FILED AS OF DATE**: 20251128

**DATE AS OF CHANGE**: 20251128

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** ORNSTEIN JONATHAN G
- **CENTRAL INDEX KEY:** 0001054973

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38626
- **FILM NUMBER:** 251536521

**MAIL ADDRESS:**
- **STREET 1:** 410 N. 44TH STREET
- **STREET 2:** SUITE 700
- **CITY:** PHOENIX
- **STATE:** AZ
- **ZIP:** 85008
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** REPUBLIC AIRWAYS HOLDINGS INC.
- **CENTRAL INDEX KEY:** 0000810332
- **STANDARD INDUSTRIAL CLASSIFICATION:** AIR TRANSPORTATION, SCHEDULED [4512]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 850302351
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 2 BRICKYARD LANE
- **CITY:** CARMEL
- **STATE:** IN
- **ZIP:** 46032
- **BUSINESS PHONE:** 317-484-6000

**MAIL ADDRESS:**
- **STREET 1:** 2 BRICKYARD LANE
- **CITY:** CARMEL
- **STATE:** IN
- **ZIP:** 46032

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MESA AIR GROUP INC
- **DATE OF NAME CHANGE:** 19950426

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MESA AIRLINES INC
- **DATE OF NAME CHANGE:** 19950426

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[x] 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**<sup>*</sup><br>ORNSTEIN JONATHAN G<br><sub>(Last) (First) (Middle)</sub><br>410 N. 44TH STREET, SUITE 700<br><sub>(Street)</sub><br>PHOENIX, AZ 85008<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-11-25 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Executive Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>REPUBLIC AIRWAYS HOLDINGS INC. [ MESA ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-11-25 |  | A |  | 25851<sup>(1)(2)</sup> | A | $0.00 | 93186<sup>(1)</sup> | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) The reporting person has reported prior restricted stock awards ("RSA") in Table II of Form 4.  The total reported in Column 5 includes 25,851 RSA's previously reported in Table II and 67,335 shares of common stock. On November 25, 2025, Issuer and Republic Airways Holdings Inc. ("Republic") completed a stock-for-stock merger transaction (the "Merger"), pursuant to which Republic merged with and into Issuer and changed its name from Mesa Air Group, Inc to Republic Airways Holdings Inc. Prior to the closing of the Merger, Issuer effected a 15 to 1 stock split (the "Stock Split") of its common stock.

(2) Pursuant to an Agreement, Plan of Conversion and Plan of Merger (the "Merger Agreement") dated April 4, 2025, by and between the Republic and Issuer, Republic merged with and into Mesa. Upon the Merger, the combined company was renamed to Republic Airways Holdings Inc. and now trades under the new ticker symbol RJET. In connection with the Merger, each outstanding restricted stock unit and RSA in respect of shares of Issuer's common stock, whether vested or unvested, accelerated in full and was cancelled and converted into the right to receive a number of shares of Issuer's common stock, less any applicable withholding taxes.

**Signature:** /s/ Jonathan G. Ornstein  
**Date:** 2025-11-28

### Remarks:

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.**