---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-25-006481"
form_type: "8-K"
ticker: "MTNB"
cik: "0001582554"
company_name: "Matinas BioPharma Holdings, Inc."
filed_at: "2025-02-13T23:59:59+00:00"
generated_at: "2026-05-26T22:17:18.073174+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Matinas raises $3.3M via Series C preferred and warrants; appoints Dr. Robin Smith to board

## Summary
- Initial closing of $1.65M for 1,650 Series C shares; second $1.65M closing subject to shareholder approval by April 10, 2025.
- Series C convertible at $0.586/share; warrants exercisable at $0.6446 for 5 years post-shareholder approval.
- Proceeds to reduce operating expenses and explore strategic alternatives for MAT2203 and other options.
- Dr. Robin L. Smith appointed to board; Herbert J. Conrad resigns as founding Chairman and retires.
- Company required to file resale registration statement by 15th day after 2024 10-K filing.

## SEC filing metadata
- accession: 0001493152-25-006481
- form_type: 8-K
- ticker: MTNB
- cik: 0001582554
- company_name: Matinas BioPharma Holdings, Inc.
- filed_at: 2025-02-13T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 1.01, 3.02, 3.03, 5.02, 5.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1582554/000149315225006481/0001493152-25-006481-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1582554/000149315225006481/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-25-006481
- JSON: https://secwatch.observer/filing/0001493152-25-006481.json
- Plain text: https://secwatch.observer/filing/0001493152-25-006481.txt

## Key facts
- Executive change
  Robin Smith was appointed as Director at Matinas BioPharma Holdings, Inc..
  - Action: appointed
  - Role: Director
  source text: the Board, on the recommendation of its Nominating and Corporate Governance Committee, appointed Robin Smith director of the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1582554/000149315225006481/0001493152-25-006481-index.htm

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