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

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

Deitzel Edward

11 Sep 2025

EVP, CRO, CCO MIAX Exchanges

Exercised, kept

16,666

$12.00

$199.99K

Smollen John

11 Sep 2025

EVP Traded Products & Relation

Exercised, kept

24,999

$12.00

$299.99K

Smollen John

11 Sep 2025

EVP Traded Products & Relation

Exercised, kept

125,001

$12.00

$1.50M

Jayabalan Harish

9 Sep 2025

EVP, CISO and CRO

Exercised, kept

3,001

$12.00

$36.01K

Jayabalan Harish

9 Sep 2025

EVP, CISO and CRO

Exercised, kept

21,999

$12.00

$263.99K

Deitzel Edward

9 Sep 2025

EVP, CRO, CCO MIAX Exchanges

Exercised, kept

62,500

$12.00

$750.00K

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