---
schema_version: "secwatch.filing_event.v1"
accession: "0001171843-25-003368"
form_type: "8-K"
ticker: "UG"
cik: "0000101295"
company_name: "UNITED GUARDIAN INC"
filed_at: "2025-05-21T23:59:59+00:00"
generated_at: "2026-05-20T22:02:09.117318+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# United-Guardian appoints President Donna Vigilante to Board of Directors

## Summary
- Donna Vigilante, President and 20-year veteran, appointed to Board effective May 15, 2025.
- Ms. Vigilante will serve until next Annual Meeting; no additional compensation for board role.
- Board also amended Code of Ethics to clarify roles, update governance, remove duplicative language.
- Amendments do not constitute a waiver; Code available on company website.

## SEC filing metadata
- accession: 0001171843-25-003368
- form_type: 8-K
- ticker: UG
- cik: 0000101295
- company_name: UNITED GUARDIAN INC
- filed_at: 2025-05-21T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.02, 5.05, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/101295/000117184325003368/0001171843-25-003368-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/101295/000117184325003368/f8k_052025.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-25-003368
- JSON: https://secwatch.observer/filing/0001171843-25-003368.json
- Plain text: https://secwatch.observer/filing/0001171843-25-003368.txt

## Key facts
- Executive change
  Donna Vigilante was appointed as Director at UNITED GUARDIAN INC.
  - Action: appointed
  - Role: Director
  source text: On May 15, 2025, the Board of Directors (the “Board”) of United-Guardian, Inc. (the “Company”) appointed Donna Vigilante, the Company’s President to serve on the Board, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/101295/000117184325003368/0001171843-25-003368-index.htm
- Governance Changes
  UNITED GUARDIAN INC: Amended the Code of Ethics to update administrative roles, revise governance provisions, remove duplicative language, and make clarifying edits (effective 2025-05-15).
  - Change: code of ethics
  - Effective: 2025-05-15
  source text: On May 15, 2025, the Board approved and adopted certain amendments to the Company’s Code of Ethics (the “Code”), effective as of that date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/101295/000117184325003368/0001171843-25-003368-index.htm

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