---
schema_version: "secwatch.filing_event.v1"
accession: "0001515971-22-000211"
form_type: "8-K"
ticker: "INIS"
cik: "0001038277"
company_name: "RADNOSTIX INC"
filed_at: "2022-12-28T23:59:59+00:00"
generated_at: "2026-06-20T22:15:30.408980+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# International Isotopes extends Series C Preferred maturity to Feb 28, 2025

## Summary
- Majority of Series C Preferred stockholders approved a two-year maturity extension.
- New maturity date is February 28, 2025; all other terms unchanged.
- Certificate of Amendment filed with Texas Secretary of State on December 28, 2022.
- Extension avoids immediate conversion or redemption triggers for Series C Preferred.

## SEC filing metadata
- accession: 0001515971-22-000211
- form_type: 8-K
- ticker: INIS
- cik: 0001038277
- company_name: RADNOSTIX INC
- filed_at: 2022-12-28T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 3.03, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1038277/000151597122000211/0001515971-22-000211-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1038277/000151597122000211/inis8k122822.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001515971-22-000211
- JSON: https://secwatch.observer/filing/0001515971-22-000211.json
- Plain text: https://secwatch.observer/filing/0001515971-22-000211.txt

## Key facts
- Governance Changes
  RADNOSTIX INC: Extended the maturity date of Series C Convertible Redeemable Preferred Stock to February 28, 2025 (effective 2022-12-28).
  - Change: charter amendment
  - Effective: 2022-12-28
  source text: On December 28, 2022, the Company filed a Certificate of Amendment to Statement of Designation of the Series C Preferred Stock (the “Certificate of Amendment”) with the Secretary of State of the State of Texas to reflect the approved modification.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1038277/000151597122000211/0001515971-22-000211-index.htm

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