---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-010480"
form_type: "8-K"
ticker: null
cik: "0001279695"
company_name: "UNIVERSAL BIOSENSORS INC"
filed_at: "2025-04-01T23:59:59+00:00"
generated_at: "2026-05-24T00:21:12.332034+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Universal Biosensors CEO John Sharman resigns; Peter Mullin appointed CEO effective April 1, 2025

## Summary
- John Sharman resigned as CEO for personal reasons effective April 1, 2025; will serve as advisor for 6 months.
- Peter Mullin, previously CFO, appointed CEO and Managing Director with total remuneration of $400K AUD.
- Mullin received 15M options in three tranches at $0.10, $0.16, $0.30 AUD, vesting over 1-3 years, subject to shareholder approval.
- Board reduced size from six to five members following Sharman's resignation.

## SEC filing metadata
- accession: 0001437749-25-010480
- form_type: 8-K
- cik: 0001279695
- company_name: UNIVERSAL BIOSENSORS INC
- filed_at: 2025-04-01T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1279695/000143774925010480/0001437749-25-010480-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1279695/000143774925010480/ubi20250401_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-010480
- JSON: https://secwatch.observer/filing/0001437749-25-010480.json
- Plain text: https://secwatch.observer/filing/0001437749-25-010480.txt

## Key facts
- Executive change
  John Sharman resigned as Chief Executive Officer and Managing Director at UNIVERSAL BIOSENSORS INC.
  - Action: resigned
  - Role: Chief Executive Officer and Managing Director
  source text: On April 1, 2025 (the “ Effective Date ”), Universal Biosensors, Inc. (the “ Company ”) announced that John Sharman resigned from his position as Chief Executive Officer and Managing Director on the Board of Directors (the “ Board ”) of the Company, effective on the Effective Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1279695/000143774925010480/0001437749-25-010480-index.htm
- Executive change
  Peter Mullin was appointed as Chief Executive Officer and Managing Director at UNIVERSAL BIOSENSORS INC.
  - Action: appointed
  - Role: Chief Executive Officer and Managing Director
  source text: On the Effective Date, the Company announced that the Board appointed Peter Mullin as Chief Executive Officer and Managing Director of the Board, effective as of the Effective Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1279695/000143774925010480/0001437749-25-010480-index.htm

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