---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-021455"
form_type: "8-K"
ticker: "MIAX"
cik: "0001438472"
company_name: "MIAMI INTERNATIONAL HOLDINGS, INC."
filed_at: "2026-03-26T23:59:59+00:00"
generated_at: "2026-05-15T08:48:44.354665+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Director Lee Becker not standing for reelection; Jill E. Sommers appointed to board

## Summary
- Lee Becker will not stand for reelection at the 2026 Annual Meeting; no disagreement with company.
- Jill E. Sommers elected to fill a vacancy effective March 25, 2026, term expires at Annual Meeting.
- Ms. Sommers to receive same compensation as other non-employee directors; not on any committees.
- No family relationships or transactions with company; standard indemnification agreement executed.

## SEC filing metadata
- accession: 0001628280-26-021455
- form_type: 8-K
- ticker: MIAX
- cik: 0001438472
- company_name: MIAMI INTERNATIONAL HOLDINGS, INC.
- filed_at: 2026-03-26T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1438472/000162828026021455/0001628280-26-021455-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1438472/000162828026021455/miax-20260324.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-021455
- JSON: https://secwatch.observer/filing/0001628280-26-021455.json
- Plain text: https://secwatch.observer/filing/0001628280-26-021455.txt

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