---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-027311"
form_type: "8-K"
ticker: "MIAX"
cik: "0001438472"
company_name: "MIAMI INTERNATIONAL HOLDINGS, INC."
filed_at: "2026-04-27T23:59:59+00:00"
generated_at: "2026-05-15T03:46:04.776733+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Miami International Holdings elects Eric Sites as director to fill vacancy

## Summary
- Eric Sites elected to board effective April 24, 2026, filling existing vacancy.
- Term until 2026 Annual Meeting of Shareholders or successor elected and qualified.
- No committee appointments; compensation same as other non-employee directors.
- No family relationships with directors or officers; no reportable transactions.
- Entered standard indemnification agreement covering expenses from board service.

## SEC filing metadata
- accession: 0001628280-26-027311
- form_type: 8-K
- ticker: MIAX
- cik: 0001438472
- company_name: MIAMI INTERNATIONAL HOLDINGS, INC.
- filed_at: 2026-04-27T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1438472/000162828026027311/0001628280-26-027311-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1438472/000162828026027311/miax-20260423.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-027311
- JSON: https://secwatch.observer/filing/0001628280-26-027311.json
- Plain text: https://secwatch.observer/filing/0001628280-26-027311.txt

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