MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) insider trading

By person

26 insiders · 90 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

—

$32.30M (12) scheduled

−$32.30M

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%

STAHL MURRAY

Director

$722.76K (5)

$4.95M (1) scheduled

−$4.23M

4,633,842

4.67%

$178.91M

+4.1%

Emmons Lance

EVP and CFO

—

$3.47M (2) scheduled

−$3.47M

86,542

0.0872%

$3.34M

+137.0%

Deitzel Edward

EVP, CRO, CCO MIAX Exchanges

—

$2.93M (8) scheduled

−$2.93M

119,601

0.1205%

$4.62M

+272.7%

Jayabalan Harish

EVP, CISO and CRO

—

$2.56M (4) scheduled

−$2.56M

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%

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%

Smollen John

EVP, New Product Development

—

269,878

0.2720%

$10.42M

—

Raymond Mark F.

Director

—

67,064

0.0676%

$2.59M

—

Stahlin Paul

Director

—

42,143

0.0425%

$1.63M

—

Beckelman John

Director

—

15,904

0.0160%

$614.05K

—

Moore Lisa

Director

—

12,737

0.0128%

$491.78K

—

Massad Mark I.

Director

—

11,237

0.0113%

$433.86K

—

Lozier Kenneth W.

Director

—

8,237

0.0083%

$318.03K

—

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

—

Nazarali Jamil

Director

—

2,500

0.0025%

$96.53K

—

Becker Lee

Director

—

2,267

0.0023%

$87.53K

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

Raymond Mark F.

16 Jun 2026

Director

Exercised, kept

16,000

$12.00

$192.00K

Stahlin Paul

11 Jun 2026

Director

Exercised, kept

4,000

$12.00

$48.00K

Stahlin Paul

9 Jun 2026

Director

Exercised, kept

7,000

$12.00

$84.00K

Teekell Judson Gray

19 May 2026

Director

Exercised, kept

22,667

$12.00

$272.00K

Gallagher Thomas P.

11 May 2026

Chairman & CEO

Exercised, kept

24,999

$12.00

$299.99K

Beckelman John

9 Apr 2026

Director

Exercised, kept

8,667

$12.00

$104.00K

Brown Shelly

30 Mar 2026

EVP, Chief Strategy Officer

Exercised, kept

5,040

$19.84

$99.99K

Brown Shelly

30 Mar 2026

EVP, Chief Strategy Officer

Exercised, kept

3,878

$25.78

$99.97K

Brown Shelly

30 Mar 2026

EVP, Chief Strategy Officer

Exercised, kept

6,195

$16.14

$99.99K

Brown Shelly

30 Mar 2026

EVP, Chief Strategy Officer

Exercised, kept

6,570

$15.22

$100.00K

Brown Shelly

30 Mar 2026

EVP, Chief Strategy Officer

Exercised, kept

8,333

$12.00

$100.00K

Comly Barbara J.

9 Mar 2026

EVP, GC & Corporate Secretary

Exercised, kept

16,666

$12.00

$199.99K

Comly Barbara J.

9 Mar 2026

EVP, GC & Corporate Secretary

Exercised, kept

8,333

$12.00

$100.00K

Comly Barbara J.

9 Mar 2026

EVP, GC & Corporate Secretary

Exercised, kept

8,333

$12.00

$100.00K

Emmons Lance

16 Dec 2025

EVP and CFO

Exercised, kept

5,040

$19.84

$99.99K

Emmons Lance

16 Dec 2025

EVP and CFO

Exercised, kept

6,195

$16.14

$99.99K

Emmons Lance

16 Dec 2025

EVP and CFO

Exercised, kept

22,221

$13.50

$299.98K

Brown Shelly

16 Dec 2025

EVP, Chief Strategy Officer

Exercised, kept

8,333

$12.00

$100.00K

Brown Shelly

16 Dec 2025

EVP, Chief Strategy Officer

Exercised, kept

8,333

$12.00

$100.00K

Brown Shelly

16 Dec 2025

EVP, Chief Strategy Officer

Exercised, kept

16,666

$12.00

$199.99K

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