MIAMI INTERNATIONAL HOLDINGS, INC.

MIAX

Form 4 • Statement of Changes in Beneficial Ownership

SEC Accession Number: 0001437749-26-007046
Filing date: Mar 5, 2026
Earliest execution date: Mar 4, 2026

Summary

Type

Buy

Net shares

+7,200

% of shares

0.15%

Amount (USD)

$312,336

Insider confidence score

62.5 out of 100

Positive

  • Small buy (≥0.05% of shares)
  • Large buy amount ($250K+)

Stock transactions

Transaction 1

Security

Common Stock

Action

Buy

Date

2026-03-04

Code

P

Net shares

+7,200.0

Price per Share

$43.38

Amount (USD)

$312,336.00

Acquired/Disposed

Acquired

Shares Owned Before

4,689,466.0

Shares Owned After

4,696,666.0

Filing's footnotes

1. Murray Stahl serves as Chairman, Chief Executive Officer, and Chief Investment Officer of Horizon Kinetics Asset Management LLC ("HKAM"), which manages funds and accounts (the "Managed Accounts") that hold securities of the Issuer. Mr. Stahl does not exercise investment discretion with respect to the securities of the Issuer that are beneficially owned by the Managed Accounts. Mr. Stahl disclaims beneficial ownership over the securities reported, except to the extent of his pecuniary interest therein, if any. The filing of this Form shall not be deemed an admission that the Mr. Stahl is the beneficial owner of such securities for purposes of Section 16 or any other purpose.

2. The Options given to Mr. Stahl are fully vested.

This page is for informational purposes only. While we strive for accuracy, the summary may contain inaccuracies or omissions. Please refer to the official SEC filing for authoritative information. Open the SEC filing.