---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-24-079854"
form_type: "8-K"
ticker: "MIST"
cik: "0001408443"
company_name: "Milestone Pharmaceuticals Inc."
filed_at: "2024-07-15T23:59:59+00:00"
generated_at: "2026-05-31T20:41:18.354532+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Milestone adds two directors, plans third under agreement with Alta activist investor

## Summary
- Appointed Stuart Duty and Andrew Saik as independent directors effective July 14, 2024.
- Cooperation agreement: Alta withdraws director nominations; Milestone to appoint third mutually agreeable independent by Sept 6, 2024.
- Directors Debra Liebert and Richard Pasternak will not stand for reelection (no disagreement).
- Alta agrees to standstill and vote with board recommendations until after 2025 annual meeting.
- Board size to rise to nine then reduce to eight after 2024 meeting and third appointment.

## SEC filing metadata
- accession: 0001104659-24-079854
- form_type: 8-K
- ticker: MIST
- cik: 0001408443
- company_name: Milestone Pharmaceuticals Inc.
- filed_at: 2024-07-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 1.01, 5.02, 5.08, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1408443/000110465924079854/0001104659-24-079854-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1408443/000110465924079854/tm2419444d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-24-079854
- JSON: https://secwatch.observer/filing/0001104659-24-079854.json
- Plain text: https://secwatch.observer/filing/0001104659-24-079854.txt

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