---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-21-144727"
form_type: "8-K"
ticker: "HRGN"
cik: "0001563665"
company_name: "Harvard Apparatus Regenerative Technology, Inc."
filed_at: "2021-11-30T23:59:59+00:00"
generated_at: "2026-06-28T04:51:20.715301+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Biostage appoints David Green as interim CEO; he invests $250,000 in private placement

## Summary
- David Green appointed Interim CEO and Chairman; Jason Chen becomes Vice Chairman.
- Green invests $250,000 for 72,464 shares and warrant for 36,232 shares at $3.45 (50% premium to Nov 26 close).
- Green's salary set at Massachusetts minimum wage ($35,568) plus option grant of 374,094 shares (2/3 vest on milestones).
- Green previously served as CEO and Chairman until 2015; returns to lead Biostage's esophageal implant development.

## SEC filing metadata
- accession: 0001104659-21-144727
- form_type: 8-K
- ticker: HRGN
- cik: 0001563665
- company_name: Harvard Apparatus Regenerative Technology, Inc.
- filed_at: 2021-11-30T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 3.02, 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1563665/000110465921144727/0001104659-21-144727-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1563665/000110465921144727/tm2134175d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-21-144727
- JSON: https://secwatch.observer/filing/0001104659-21-144727.json
- Plain text: https://secwatch.observer/filing/0001104659-21-144727.txt

## Key facts
- Executive change
  David Green was appointed as Chairman of the Board at Harvard Apparatus Regenerative Technology, Inc..
  - Action: appointed
  - Role: Chairman of the Board
  source text: Mr. Green also joined the Board as a Class II director and was appointed Chairman of the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1563665/000110465921144727/0001104659-21-144727-index.htm
- Executive change
  David Green was appointed as Interim Chief Executive Officer at Harvard Apparatus Regenerative Technology, Inc..
  - Action: appointed
  - Role: Interim Chief Executive Officer
  source text: Effective as of November 26, 2021, the Company appointed Mr. Green as Interim Chief Executive Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1563665/000110465921144727/0001104659-21-144727-index.htm
- Executive change
  Jason Chen was appointed as Vice Chairman of the Board at Harvard Apparatus Regenerative Technology, Inc..
  - Action: appointed
  - Role: Vice Chairman of the Board
  source text: the Company’s existing Chairman, Jason Chen, was appointed Vice Chairman of the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1563665/000110465921144727/0001104659-21-144727-index.htm

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