---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-22-014954"
form_type: "8-K"
ticker: "HRGN"
cik: "0001563665"
company_name: "Harvard Apparatus Regenerative Technology, Inc."
filed_at: "2022-10-12T23:59:59+00:00"
generated_at: "2026-06-23T04:05:25.138044+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Biostage dismisses auditor Wei, Wei & Co. and engages Marcum LLP; prior FY2021 report had going concern

## Summary
- Dismissed Wei, Wei & Co. as independent auditor on Oct 10, 2022.
- FY2021 audit opinion included a going concern paragraph about substantial doubt.
- No disagreements with Wei on accounting principles or practices during recent years.
- Engaged Marcum LLP as new independent registered public accounting firm on Oct 10, 2022.
- No prior consultations with Marcum on accounting or audit matters.

## SEC filing metadata
- accession: 0001558370-22-014954
- form_type: 8-K
- ticker: HRGN
- cik: 0001563665
- company_name: Harvard Apparatus Regenerative Technology, Inc.
- filed_at: 2022-10-12T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1563665/000155837022014954/0001558370-22-014954-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1563665/000155837022014954/tmb-20221010x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-22-014954
- JSON: https://secwatch.observer/filing/0001558370-22-014954.json
- Plain text: https://secwatch.observer/filing/0001558370-22-014954.txt

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