---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-047927"
form_type: "8-K"
ticker: "RJET"
cik: "0000810332"
company_name: "REPUBLIC AIRWAYS HOLDINGS INC."
filed_at: "2023-09-13T23:59:59+00:00"
generated_at: "2026-06-10T19:39:26.371084+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# CFO Daniel Zubeck resigns; President Michael Lotz named interim CFO

## Summary
- Daniel Zubeck resigns as CFO of Mesa Air Group, effective September 15, 2023.
- Resignation not due to any disagreement over financial statements, internal controls, or operations.
- President Michael J. Lotz appointed interim CFO; served as CFO from 2008 to 2021 and President since 2000.

## SEC filing metadata
- accession: 0000950170-23-047927
- form_type: 8-K
- ticker: RJET
- cik: 0000810332
- company_name: REPUBLIC AIRWAYS HOLDINGS INC.
- filed_at: 2023-09-13T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/810332/000095017023047927/0000950170-23-047927-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/810332/000095017023047927/mesa-20230913.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-047927
- JSON: https://secwatch.observer/filing/0000950170-23-047927.json
- Plain text: https://secwatch.observer/filing/0000950170-23-047927.txt

## Key facts
- Executive change
  Daniel Zubeck departed as Chief Financial Officer at REPUBLIC AIRWAYS HOLDINGS INC..
  - Action: resign
  - Role: Chief Financial Officer
  source text: effective September 15, 2023, Daniel Zubeck, the Company’s Chief Financial Officer, will resign from the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/810332/000095017023047927/0000950170-23-047927-index.htm
- Executive change
  Michael J. Lotz was appointed as interim Chief Financial Officer at REPUBLIC AIRWAYS HOLDINGS INC..
  - Action: appointed
  - Role: interim Chief Financial Officer
  source text: Michael J. Lotz, the Company’s President, will serve as interim Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/810332/000095017023047927/0000950170-23-047927-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.