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$MIAX All transactions

MIAMI INTERNATIONAL HOLDINGS, INC.

M 10b5-1 Plan

$ Value

$0

Shares

70,001

Price

$0

Filed

Apr 17

Insider

Name

Gallagher Thomas P.

Title

Chairman & CEO

CIK

0002080477

Roles

Director Officer

Transaction Details

Transaction Date

2026-04-15

Code

M

Table

Derivative

Ownership

Indirect

Equity Swap

No

Shares After

280,000

Footnotes

This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 29, 2025. | Mr. Gallagher maintains beneficial ownership, including dispositive and voting control, over Gallagher Investments, LLC. | This transaction was executed in multiple trades throughout the day at prices ranging from $42.57 to $44.41. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. | Includes 12,000 shares of common stock, which are held jointly with the Reporting Person's spouse with right of survival. | The options are fully vested.

Filing Info

Accession No.

0001628280-26-025753

Form Type

4

Issuer CIK

0001438472

Gallagher Thomas P.'s History

Date Ticker Type Value
2026-04-15 MIAX M $840K
2026-04-15 MIAX $3.0M
2026-04-15 MIAX $4.5M
2026-04-15 MIAX $2.2M
2026-04-15 MIAX M $0
2026-03-30 MIAX F $783K
2025-12-23 MIAX G
2025-08-26 MIAX F $6.5M
2025-08-15 MIAX C
2025-08-15 MIAX C

Other Insiders at MIAX (90d)

Insider Bought Sold Last
Teekell Judson Gray $120K 2026-04-02
Gallagher Thomas P.
Chairman & CEO
$9.7M 2026-04-15
Brown Shelly
EVP, Chief Strategy Officer
$1.8M 2026-04-08
Beckelman John 2026-04-09
Deitzel Edward
EVP, CRO, CCO MIAX Exchanges
$518K 2026-04-08
Emmons Lance
EVP and CFO
2026-03-30
Smollen John
EVP, New Product Development
2026-03-30
Comly Barbara J.
EVP, GC & Corporate Secretary
$1.3M 2026-04-15