---
schema_version: "secwatch.filing_event.v1"
accession: "0001641172-25-005547"
form_type: "8-K"
ticker: "NVNO"
cik: "0001661053"
company_name: "enVVeno Medical Corp"
filed_at: "2025-04-21T23:59:59+00:00"
generated_at: "2026-05-23T10:18:10.238819+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# enVVeno Medical replaces auditor Marcum with CBIZ CPAs after acquisition of Marcum's attest business

## Summary
- Marcum resigned as auditor effective April 17, 2025; CBIZ CPAs engaged with Audit Committee approval.
- No adverse opinions, disagreements, or reportable events in Marcum's reports for FY 2024 and 2023.
- Change results from CBIZ's acquisition of Marcum's attest business on November 1, 2024.
- Marcum provided a letter agreeing with the company's statements (Exhibit 16.1).

## SEC filing metadata
- accession: 0001641172-25-005547
- form_type: 8-K
- ticker: NVNO
- cik: 0001661053
- company_name: enVVeno Medical Corp
- filed_at: 2025-04-21T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1661053/000164117225005547/0001641172-25-005547-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1661053/000164117225005547/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001641172-25-005547
- JSON: https://secwatch.observer/filing/0001641172-25-005547.json
- Plain text: https://secwatch.observer/filing/0001641172-25-005547.txt

## Key facts
- Auditor Changes
  enVVeno Medical Corp engaged CBIZ CPAs P.C. as its auditor.
  - Action: engagement
  - Auditor: CBIZ CPAs P.C.
  source text: On November 1, 2024, CBIZ CPAs P.C. acquired the attest business of Marcum LLP ("Marcum") which was engaged as the independent registered public accounting firm of enVVeno Medical Corporation (the "Company"). As a result of this transaction, on April 17, 2025, Marcum resigned as auditors of the Company, and with the approval of the Audit Committee of the Company’s Board of Directors, CBIZ CPAs P.C. was engaged as the Company’s new independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1661053/000164117225005547/0001641172-25-005547-index.htm
- Auditor Changes
  Marcum LLP resigned as auditor of enVVeno Medical Corp.
  - Action: resignation
  - Auditor: Marcum LLP
  - Successor: CBIZ CPAs P.C.
  source text: On November 1, 2024, CBIZ CPAs P.C. acquired the attest business of Marcum LLP ("Marcum") which was engaged as the independent registered public accounting firm of enVVeno Medical Corporation (the "Company"). As a result of this transaction, on April 17, 2025, Marcum resigned as auditors of the Company, and with the approval of the Audit Committee of the Company’s Board of Directors, CBIZ CPAs P.C. was engaged as the Company’s new independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1661053/000164117225005547/0001641172-25-005547-index.htm

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