MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) insider trading

By person

26 insiders · 110 transactions

56.1×

Thomas P. Gallagher holds 56.1 times base salary in stock. $140.27M of shares against $2.50M in salary for 2025.

Salary from the company's own proxy. The shares are what Thomas P. Gallagher last reported holding, valued at $38.61, the price Common Stock was last bought or sold at on the open market here, on 16 Sep 2026.

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Gallagher Thomas P.

Chairman & CEO

$276.00K (1)

$32.30M (12) scheduled

−$32.03M

3,633,092

3.66%

$140.27M

+9.1%

Schafer Douglas M. JR

EVP and CIO

—

$12.35M (6) scheduled

−$12.35M

387,414

0.3904%

$14.96M

+158.3%

Comly Barbara J.

EVP, GC & Corporate Secretary

—

$9.98M (7) scheduled

−$9.98M

839,564

0.8461%

$32.42M

−3.4%

Brown Shelly

EVP, Chief Strategy Officer

—

$4.98M (9) scheduled

−$4.98M

316,490

0.3189%

$12.22M

+127.8%

Emmons Lance

EVP and CFO

$125.76 (1)

$3.47M (2) scheduled

−$3.47M

86,542

0.0872%

$3.34M

+137.0%

STAHL MURRAY

Director

$1.97M (6)

$4.95M (1) scheduled

−$2.99M

4,633,842

4.67%

$178.91M

+4.1%

Deitzel Edward

EVP, CRO, CCO MIAX Exchanges

$2.30K (1)

$2.93M (8) scheduled

−$2.93M

119,601

0.1205%

$4.62M

+272.7%

Jayabalan Harish

EVP, CISO and CRO

$57.50K (1)

$2.56M (4) scheduled

−$2.50M

78,065

0.0787%

$3.01M

+1,880%

Eckert Kurt M.

Director

—

$2.22M (5) scheduled

−$2.22M

149,612

0.1508%

$5.78M

+24.2%

Schwarzkopf Cynthia

Director

—

$1.24M (3) scheduled

−$1.24M

88,545

0.0892%

$3.42M

—

Teekell Judson Gray

Director

—

$1.00M (8) scheduled

−$1.00M

236,796

0.2386%

$9.14M

+123.3%

Massad Mark I.

Director

$184.00K (4)

—

+$184.00K

11,237

0.0113%

$433.86K

—

Moore Lisa

Director

$126.50K (1)

—

+$126.50K

12,737

0.0128%

$491.78K

—

Smollen John

EVP, New Product Development

$115.00K (1)

—

+$115.00K

269,878

0.2720%

$10.42M

—

Nazarali Jamil

Director

$57.50K (1)

—

+$57.50K

2,500

0.0025%

$96.53K

—

Lozier Kenneth W.

Director

$23.00K (1)

—

+$23.00K

8,237

0.0083%

$318.03K

—

Stahlin Paul

Director

$23.00K (1)

—

+$23.00K

42,143

0.0425%

$1.63M

—

Al-Bahar Talal Jassim

Director

—

3,658,187

3.69%

$141.24M

+7.2%

HORIZON KINETICS ASSET MANAGEMENT LLC entity

10% owner

—

2,170,898

2.19%

$83.82M

−53.1%

Raymond Mark F.

Director

—

67,064

0.0676%

$2.59M

—

Beckelman John

Director

—

15,904

0.0160%

$614.05K

—

BROWN DAVID A

Director

—

7,066

0.0071%

$272.82K

—

Sommers Jill E.

Director

—

6,083

0.0061%

$234.86K

—

Sites Eric

Director

—

5,684

0.0057%

$219.46K

—

Vermaas Cees

CEO of TISEG

—

4,660

0.0047%

$179.92K

—

Becker Lee

Director

—

2,267

0.0023%

$87.53K

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

STAHL MURRAY

5 Mar 2026

Director

Buy indirect

7,200

$43.08

$310.18K

STAHL MURRAY

4 Mar 2026

Director

Buy indirect

7,200

$43.38

$312.34K

STAHL MURRAY

12 Dec 2025

Director

Buy indirect

2,439

$41.00

$100.00K

STAHL MURRAY

3 Oct 2025

Director

Buy indirect

$41.97

$83.94

STAHL MURRAY

26 Sep 2025

Director

Buy indirect

$41.76

$167.04

STAHL MURRAY

28 Aug 2025

Director

Buy indirect

34,470

$36.10

$1.24M

Emmons Lance

14 Aug 2025

EVP and CFO

Buy indirect

$31.44

$125.76

Massad Mark I.

13 Aug 2025

Director

Buy indirect

500

$23.00

$11.50K

Massad Mark I.

13 Aug 2025

Director

Buy indirect

1,500

$23.00

$34.50K

Massad Mark I.

13 Aug 2025

Director

Buy indirect

2,500

$23.00

$57.50K

Massad Mark I.

13 Aug 2025

Director

Buy

3,500

$23.00

$80.50K

Lozier Kenneth W.

13 Aug 2025

Director

Buy

1,000

$23.00

$23.00K

Gallagher Thomas P.

13 Aug 2025

Chairman & CEO

Buy

12,000

$23.00

$276.00K

Deitzel Edward

13 Aug 2025

EVP, CRO, CCO MIAX Exchanges

Buy

100

$23.00

$2.30K

Smollen John

13 Aug 2025

EVP Traded Products & Relation

Buy

5,000

$23.00

$115.00K

Nazarali Jamil

13 Aug 2025

Director

Buy

2,500

$23.00

$57.50K

Stahlin Paul

13 Aug 2025

Director

Buy

1,000

$23.00

$23.00K

Jayabalan Harish

13 Aug 2025

EVP, CISO and CRO

Buy

2,500

$23.00

$57.50K

Moore Lisa

13 Aug 2025

Director

Buy

5,500

$23.00

$126.50K

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