---
schema_version: "secwatch.filing_event.v1"
accession: "0001171843-23-006403"
form_type: "8-K"
ticker: "UG"
cik: "0000101295"
company_name: "UNITED GUARDIAN INC"
filed_at: "2023-10-25T23:59:59+00:00"
generated_at: "2026-06-09T09:36:37.010838+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# United-Guardian warns of Renacidin supply shortage due to supplier delays

## Summary
- Amsino shifted two purchase orders from Dec 2023/Jan 2024 to Feb 2 and Feb 9, 2024.
- Company notified FDA on Oct 19 of potential shortage; current supply likely insufficient.
- Amsino's production shutdown extended for maintenance and FDA observations.
- Mitigation measures underway; no quantitative financial impact disclosed.

## SEC filing metadata
- accession: 0001171843-23-006403
- form_type: 8-K
- ticker: UG
- cik: 0000101295
- company_name: UNITED GUARDIAN INC
- filed_at: 2023-10-25T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/101295/000117184323006403/0001171843-23-006403-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/101295/000117184323006403/f8k_102523.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-23-006403
- JSON: https://secwatch.observer/filing/0001171843-23-006403.json
- Plain text: https://secwatch.observer/filing/0001171843-23-006403.txt

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