---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-084340"
form_type: "8-K"
ticker: "RNTX"
cik: "0001420565"
company_name: "Rein Therapeutics, Inc."
filed_at: "2025-04-17T23:59:59+00:00"
generated_at: "2026-05-23T11:43:37.639430+00:00"
event_type: "other"
sentiment: "negative"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Rein Therapeutics auditor Marcum resigns, CBIZ appointed; going concern noted

## Summary
- Marcum LLP resigned as independent auditor on April 16, 2025; CBIZ CPAs P.C. engaged by Audit Committee.
- Marcum's reports for 2024 and 2023 included a going concern explanatory paragraph for Rein Therapeutics.
- No disagreements on accounting principles or practices between Marcum and the company.
- Material weaknesses in internal controls over financial reporting were reported for both 2024 and 2023.
- Company authorized Marcum to fully respond to successor auditor inquiries.

## SEC filing metadata
- accession: 0001193125-25-084340
- form_type: 8-K
- ticker: RNTX
- cik: 0001420565
- company_name: Rein Therapeutics, Inc.
- filed_at: 2025-04-17T23:59:59+00:00
- event_type: other
- sentiment: negative
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1420565/000119312525084340/0001193125-25-084340-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1420565/000119312525084340/d940643d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-084340
- JSON: https://secwatch.observer/filing/0001193125-25-084340.json
- Plain text: https://secwatch.observer/filing/0001193125-25-084340.txt

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