---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-24-021310"
form_type: "8-K"
ticker: null
cik: "0000811212"
company_name: "ThermoGenesis Holdings, Inc."
filed_at: "2024-06-26T23:59:59+00:00"
generated_at: "2026-06-01T02:00:54.644141+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Three directors resign from ThermoGenesis board, citing disagreement on strategic transactions and conflicts of interest

## Summary
- Russell Medford, Joseph Thomis, and James Xu resigned from the Board effective June 22, 2024.
- Medford and Thomis cited disagreement over potential strategic transactions and conflicts of interest involving Chairman/CEO.
- Medford chaired Audit and Governance; Thomis chaired Compensation; Xu served on Governance Committee.
- James Xu submitted a follow-up letter on June 24 expressing potential disagreement with the initial resignation letter.

## SEC filing metadata
- accession: 0001437749-24-021310
- form_type: 8-K
- cik: 0000811212
- company_name: ThermoGenesis Holdings, Inc.
- filed_at: 2024-06-26T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/811212/000143774924021310/0001437749-24-021310-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/811212/000143774924021310/thmo20240626_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-24-021310
- JSON: https://secwatch.observer/filing/0001437749-24-021310.json
- Plain text: https://secwatch.observer/filing/0001437749-24-021310.txt

## Key facts
- Executive change
  Russell Medford resigned as Director at ThermoGenesis Holdings, Inc..
  - Action: resigned
  - Role: Director
  source text: On June 22, 2024, Russell Medford, Joseph Thomis, and James Xu resigned, effective immediately, from their positions as members of the Board of Directors (the “Board”) of ThermoGenesis Holdings, Inc. (the “Company”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/811212/000143774924021310/0001437749-24-021310-index.htm
- Executive change
  Joseph Thomis resigned as Director at ThermoGenesis Holdings, Inc..
  - Action: resigned
  - Role: Director
  source text: On June 22, 2024, Russell Medford, Joseph Thomis, and James Xu resigned, effective immediately, from their positions as members of the Board of Directors (the “Board”) of ThermoGenesis Holdings, Inc. (the “Company”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/811212/000143774924021310/0001437749-24-021310-index.htm
- Executive change
  James Xu resigned as Director at ThermoGenesis Holdings, Inc..
  - Action: resigned
  - Role: Director
  source text: On June 22, 2024, Russell Medford, Joseph Thomis, and James Xu resigned, effective immediately, from their positions as members of the Board of Directors (the “Board”) of ThermoGenesis Holdings, Inc. (the “Company”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/811212/000143774924021310/0001437749-24-021310-index.htm

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