# EDGAR Filing Document

**Accession Number:** 0000810332
**File Stem:** 0001193125-25-319406
**Filing Date:** 2025-12
**Character Count:** 7568
**Document Hash:** 0c602648d46f8caf8dcf78135753d95a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-319406.hdr.sgml**: 20251215

**ACCESSION NUMBER**: 0001193125-25-319406

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20251215

**ITEM INFORMATION**: Regulation FD Disclosure

**FILED AS OF DATE**: 20251215

**DATE AS OF CHANGE**: 20251215

**FILER**: 

**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

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38626
- **FILM NUMBER:** 251572449

**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

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 OR 15(d)

#### of The Securities Exchange Act of 1934

#### Date of Report (Date of earliest event reported): December 15, 2025

## Republic Airways Holdings Inc.

#### (Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-38626** | **85-0302351** |
| **(State or other jurisdiction**<br> **of incorporation)** | **(Commission**<br> **File Number)** | **(IRS Employer**<br> **Identification No.)** |
| **2 Brickyard Lane**<br> **Carmel, IN** | **2 Brickyard Lane**<br> **Carmel, IN** | **46032** |
| **(Address of principal executive offices)** | **(Address of principal executive offices)** | **(Zip Code)** |

---

(317) 484-6000

#### (Registrant's telephone number, including area code)

#### Not Applicable

#### (Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading<br>Symbol(s)** | **Name of each exchange<br>on which registered** |
| Common Stock, par value $0.001 per share | RJET | The Nasdaq Stock Market LLC |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

------

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| | |
|:---|:---|
| **Item 7.01.** | **Regulation FD Disclosure.**  |

---

David Grizzle, who has served as the non-executive Chairman of Republic Airways Holdings Inc. (the "Company") since 2017, was appointed Chairman and Chief Executive Officer ("CEO") in July 2025, following the unplanned departure of the Company's former CEO upon his appointment as Administrator of the Federal Aviation Administration. Mr. Grizzle is expected to serve as CEO while the Company proceeds in its integration of Mesa Airlines. The Board of Directors expects to promote Matthew Koscal, the Company's current President and Chief Commercial Officer, to the position of CEO within the year 2026, at which time, Mr. Grizzle will return to the position of non-executive Chairman of the Board of Directors. Any final succession decision will be determined at a future undetermined date, in the sole discretion of the Board of Directors and publicly announced as legally required.

The information set forth under this Item 7.01 shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that Section, nor shall it be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.

#### Forward Looking Statements
This Current Report on Form 8-K contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. These forward-looking statements include statements regarding CEO succession plans. Words such as "future," "anticipate," "believe," "estimate," "expect," "intend," "plan," "may," "might," "predict," "will," "would," "should," "could," "can," "may," or the negative or other variations thereof, and similar words or phrases or comparable terminology, are intended to identify forward-looking statements.

The forward-looking statements contained herein reflect the Company's current views about future events and are subject to numerous known and unknown risks, uncertainties, assumptions and changes in circumstances, many of which are beyond the Company's control, that may cause actual results and future events to differ significantly from those expressed in any forward-looking statement.

While forward-looking statements reflect the Company's good faith beliefs, they are not guarantees of future performance or events. Any forward-looking statement speaks only as of the date on which it was made. The Company disclaims any obligation to publicly update or revise any forward-looking statement to reflect changes in underlying assumptions or factors, of new information, data or methods, future events or other changes. For a further discussion of these and other factors that could cause the Company's future results to differ materially from any forward-looking statements, see the section entitled "Risk Factors" in the proxy statement/prospectus, related to the merger transaction between Mesa Air Group, Inc. and Republic Airways Holdings Inc., filed by the Company with the Securities and Exchange Commission (SEC) on October 2, 2025, as such factors may be updated from time to time in the Company's filings with the SEC, which are or will be accessible on the SEC's website at www.sec.gov.

------

#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
| Date: December 15, 2025 | **REPUBLIC AIRWAYS HOLDINGS INC.** | **REPUBLIC AIRWAYS HOLDINGS INC.** |
|  | By: | /s/ Joseph P. Allman |
|  | Name: | Joseph P. Allman |
|  | Title: | Senior Vice President and Chief Financial Officer |

---