# EDGAR Filing Document

**Accession Number:** 0000810332
**File Stem:** 9999999995-25-003186
**Filing Date:** 2025-9
**Character Count:** 1431
**Document Hash:** c4a12348f3cb93b3091e1b378b9466f3
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-25-003186.hdr.sgml**: 20251001

**ACCESSION NUMBER**: 9999999995-25-003186

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250930

**DATE AS OF CHANGE**: 20251001

**EFFECTIVENESS DATE**: 20250930

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MESA AIR GROUP INC
- **CENTRAL INDEX KEY:** 0000810332
- **STANDARD INDUSTRIAL CLASSIFICATION:** AIR TRANSPORTATION, SCHEDULED [4512]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 850302351
- **STATE OF INCORPORATION:** NV
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-288622
- **FILM NUMBER:** 251362328

**BUSINESS ADDRESS:**
- **STREET 1:** 410 NORTH 44TH STREET
- **STREET 2:** SUITE 700
- **CITY:** PHOENIX
- **STATE:** AZ
- **ZIP:** 85008
- **BUSINESS PHONE:** 602.685.4000

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

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

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

## Notice of Effectiveness

**Date:** September 30, 2025

**Time:** 16:00:00

**Form Type:** S-4

---

**CIK:** 0000810332

**Company Name:** MESA AIR GROUP INC

**File Number:** 333-288622