---
schema_version: "secwatch.filing_event.v1"
accession: "0001641172-25-016833"
form_type: "8-K"
ticker: "CLCS"
cik: "0001569340"
company_name: "Cell Source, Inc."
filed_at: "2025-06-27T23:59:59+00:00"
generated_at: "2026-05-18T15:50:12.047063+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Cell Source replaces auditor Marcum with CBIZ CPAs after acquisition; going concern noted in prior reports

## Summary
- Marcum resigned as auditor on June 26, 2025; CBIZ CPAs engaged for year ended Dec 31, 2024.
- Audit reports for 2022 and 2023 included a going-concern emphasis but no adverse opinion.
- No disagreements or reportable events occurred with Marcum during the relevant periods.
- Change triggered by CBIZ's November 1, 2024 acquisition of Marcum's attest business.

## SEC filing metadata
- accession: 0001641172-25-016833
- form_type: 8-K
- ticker: CLCS
- cik: 0001569340
- company_name: Cell Source, Inc.
- filed_at: 2025-06-27T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1569340/000164117225016833/0001641172-25-016833-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1569340/000164117225016833/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001641172-25-016833
- JSON: https://secwatch.observer/filing/0001641172-25-016833.json
- Plain text: https://secwatch.observer/filing/0001641172-25-016833.txt

## Key facts
- Auditor Changes
  Marcum LLP resigned as auditor of Cell Source, Inc..
  - Action: resignation
  - Auditor: Marcum LLP
  - Successor: CBIZ CPAs P.C.
  source text: on June 26, 2025, Marcum resigned as the independent registered public accounting firm of Cell Source, Inc. (the “Company”)
  evidence_url: https://www.sec.gov/Archives/edgar/data/1569340/000164117225016833/0001641172-25-016833-index.htm
- Auditor Changes
  Cell Source, Inc. engaged CBIZ CPAs P.C. as its auditor.
  - Action: engagement
  - Auditor: CBIZ CPAs P.C.
  source text: with the approval of the Audit Committee of the Company’s Board of Directors, CBIZ CPAs was engaged as the Company’s independent registered public accounting firm
  evidence_url: https://www.sec.gov/Archives/edgar/data/1569340/000164117225016833/0001641172-25-016833-index.htm

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