---
schema_version: "secwatch.filing_event.v1"
accession: "0001420720-24-000008"
form_type: "8-K"
ticker: "IBIO"
cik: "0001420720"
company_name: "iBio, Inc."
filed_at: "2024-02-21T23:59:59+00:00"
generated_at: "2026-06-05T21:53:51.699247+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# iBio replaces auditor CohnReznick with Grassi; prior audit included going concern note

## Summary
- Audit Committee approved Grassi & Co. as new auditor for FY ending June 30, 2024; engagement effective Feb 20, 2024.
- CohnReznick resigned effective Feb 15, 2024; its FY2023 report included a going concern explanatory paragraph.
- No disagreements or reportable events, apart from a remediated material weakness in stock-based compensation accounting.
- Resignation not initiated by Audit Committee; competitive process led to selection of Grassi.

## SEC filing metadata
- accession: 0001420720-24-000008
- form_type: 8-K
- ticker: IBIO
- cik: 0001420720
- company_name: iBio, Inc.
- filed_at: 2024-02-21T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1420720/000142072024000008/0001420720-24-000008-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1420720/000142072024000008/ibio-20240215x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001420720-24-000008
- JSON: https://secwatch.observer/filing/0001420720-24-000008.json
- Plain text: https://secwatch.observer/filing/0001420720-24-000008.txt

## Key facts
- Auditor Changes
  iBio, Inc. engaged Grassi & Co., CPAs, P.C. as its auditor.
  - Action: engagement
  - Auditor: Grassi & Co., CPAs, P.C.
  source text: On February 20, 2024, the Company entered into an engagement letter with Grassi and engaged Grassi as the Company’s independent registered public accounting firm effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1420720/000142072024000008/0001420720-24-000008-index.htm
- Auditor Changes
  CohnReznick LLP resigned as auditor of iBio, Inc..
  - Action: resignation
  - Auditor: CohnReznick LLP
  source text: On February 15, 2024, the Company was notified that its independent registered public accounting firm, CohnReznick LLP ("CohnReznick"), is resigning its engagement with the Company effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1420720/000142072024000008/0001420720-24-000008-index.htm

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