---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-25-021870"
form_type: "8-K"
ticker: "NUWE"
cik: "0001506492"
company_name: "Nuwellis, Inc."
filed_at: "2025-06-09T23:59:59+00:00"
generated_at: "2026-05-19T17:03:46.859738+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Nuwellis exchanges CEO's Series F preferred for new Series F-1 with 19.99% conversion cap

## Summary
- CEO John L. Erb exchanged 100 shares of Series F Preferred for 100 shares of newly designated Series F-1 Convertible Preferred on June 9, 2025.
- Series F-1 includes a beneficial ownership limitation of 19.99% upon conversion, unlike the original Series F.
- CEO agreed to convert all Series F-1 shares to common by a deadline tied to the underwriting agreement for S-1 public offering (333-287663).
- CEO also agreed to vote in favor of shareholder approval for warrants in that offering as required by Nasdaq rules.

## SEC filing metadata
- accession: 0001140361-25-021870
- form_type: 8-K
- ticker: NUWE
- cik: 0001506492
- company_name: Nuwellis, Inc.
- filed_at: 2025-06-09T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 5.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1506492/000114036125021870/0001140361-25-021870-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1506492/000114036125021870/ef20050313_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-25-021870
- JSON: https://secwatch.observer/filing/0001140361-25-021870.json
- Plain text: https://secwatch.observer/filing/0001140361-25-021870.txt

## Key facts
- Governance Changes
  Nuwellis, Inc.: Filed Certificate of Designation for Series F-1 Convertible Preferred Stock, authorizing 100 shares with a 19.99% beneficial ownership limitation upon conversion (effective 2025-06-06).
  - Change: charter amendment
  - Effective: 2025-06-06
  source text: On June 6, 2025, Nuwellis, Inc. (the “Company”) filed the Certificate of Designation of Preferences, Rights and Limitations of Series F-1 Convertible Preferred Stock (the “F-1 Certificate of Designation”) with the Secretary of State of the State of Delaware, authorizing the issuance of 100 shares of Series F-1 Convertible Preferred Stock (the “Series F-1 Stock”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1506492/000114036125021870/0001140361-25-021870-index.htm

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