---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-093996"
form_type: "8-K"
ticker: "XENE"
cik: "0001582313"
company_name: "Xenon Pharmaceuticals Inc."
filed_at: "2025-07-03T23:59:59+00:00"
generated_at: "2026-05-18T09:27:24.646448+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Xenon CFO Sherry Aulin resigns; CEO Ian Mortimer appointed interim CFO

## Summary
- Sherry Aulin resigned as CFO, effective June 30, 2025.
- Ian Mortimer (President & CEO) appointed interim CFO effective June 30, 2025, serving as principal financial and accounting officer.
- No change to Mortimer's compensation in connection with the appointment.
- Mortimer's background previously disclosed in the April 24, 2025 proxy statement.

## SEC filing metadata
- accession: 0000950170-25-093996
- form_type: 8-K
- ticker: XENE
- cik: 0001582313
- company_name: Xenon Pharmaceuticals Inc.
- filed_at: 2025-07-03T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1582313/000095017025093996/0000950170-25-093996-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1582313/000095017025093996/xene-20250630.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-093996
- JSON: https://secwatch.observer/filing/0000950170-25-093996.json
- Plain text: https://secwatch.observer/filing/0000950170-25-093996.txt

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