---
schema_version: "secwatch.filing_event.v1"
accession: "0001641172-25-022445"
form_type: "8-K"
ticker: "MTNB"
cik: "0001582554"
company_name: "Matinas BioPharma Holdings, Inc."
filed_at: "2025-08-06T23:59:59+00:00"
generated_at: "2026-05-17T19:27:24.649639+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Matinas BioPharma increases authorized common stock to 500M shares

## Summary
- Authorized common shares doubled from 250M to 500M effective Aug 6, 2025.
- Shareholder approval obtained at 2025 annual meeting on June 23, 2025.
- Total authorized capital stock is now 510M shares (500M common + 10M preferred).
- Certificate of Amendment filed with Delaware Secretary of State.

## SEC filing metadata
- accession: 0001641172-25-022445
- form_type: 8-K
- ticker: MTNB
- cik: 0001582554
- company_name: Matinas BioPharma Holdings, Inc.
- filed_at: 2025-08-06T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1582554/000164117225022445/0001641172-25-022445-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1582554/000164117225022445/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001641172-25-022445
- JSON: https://secwatch.observer/filing/0001641172-25-022445.json
- Plain text: https://secwatch.observer/filing/0001641172-25-022445.txt

## Key facts
- Governance Changes
  Matinas BioPharma Holdings, Inc.: Increased authorized shares of common stock from 250,000,000 to 500,000,000 (effective 2025-08-06).
  - Change: charter amendment
  - Effective: 2025-08-06
  source text: On August 6, 2025, Matinas BioPharma Holdings, Inc. (the “Company”) filed a Certificate of Amendment (the “Certificate of Amendment”) to the Company’s Certificate of Incorporation, as amended, with the Secretary of State of the State of Delaware to increase the number of authorized shares of the Company’s common stock from 250,000,000 shares to 500,000,000 shares. The Certificate of Amendment was approved by the Company’s stockholders at the 2025 annual meeting on June 23, 2025 and became effective upon filing.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1582554/000164117225022445/0001641172-25-022445-index.htm

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