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

Brown Shelly

16 Sep 2026

EVP, Chief Strategy Officer

Sold on a plan

21,217

$38.61

$819.19K

Deitzel Edward

3 Sep 2026

EVP, CRO, CCO MIAX Exchanges

Sold after exercise

11,000

$42.21

$464.31K

Gallagher Thomas P.

3 Sep 2026

Chairman & CEO

Sold after exercise indirect

47,000

$42.43

$1.99M

Teekell Judson Gray

2 Sep 2026

Director

Sold on a plan

3,000

$40.89

$122.67K

Teekell Judson Gray

2 Sep 2026

Director

Sold on a plan indirect

5,545

$41.58

$230.56K

Schafer Douglas M. JR

2 Sep 2026

EVP and CIO

Sold after exercise

48,000

$40.48

$1.94M

Comly Barbara J.

2 Sep 2026

EVP, GC & Corporate Secretary

Sold after exercise

44,445

$40.49

$1.80M

Gallagher Thomas P.

19 Aug 2026

Chairman & CEO

Sold on a plan indirect

149,700

$41.13

$6.16M

Emmons Lance

17 Aug 2026

EVP and CFO

Sold on a plan

35,000

$42.83

$1.50M

Schwarzkopf Cynthia

17 Aug 2026

Director

Sold after exercise

5,000

$42.85

$214.25K

Gallagher Thomas P.

4 Aug 2026

Chairman & CEO

Sold after exercise indirect

48,334

$45.69

$2.21M

Schafer Douglas M. JR

4 Aug 2026

EVP and CIO

Sold after exercise

48,000

$45.71

$2.19M

Deitzel Edward

4 Aug 2026

EVP, CRO, CCO MIAX Exchanges

Sold after exercise

11,000

$45.78

$503.58K

Comly Barbara J.

4 Aug 2026

EVP, GC & Corporate Secretary

Sold after exercise

44,445

$45.69

$2.03M

Jayabalan Harish

4 Aug 2026

EVP, CISO and CRO

Sold after exercise

20,000

$45.90

$918.00K

Teekell Judson Gray

4 Aug 2026

Director

Sold on a plan

3,000

$45.79

$137.37K

Eckert Kurt M.

4 Aug 2026

Director

Sold after exercise

1,063

$45.80

$48.69K

Schwarzkopf Cynthia

15 Jul 2026

Director

Sold after exercise

5,000

$42.00

$210.00K

Gallagher Thomas P.

13 Jul 2026

Chairman & CEO

Sold after exercise indirect

70,000

$42.52

$2.98M

Comly Barbara J.

13 Jul 2026

EVP, GC & Corporate Secretary

Sold after exercise

28,000

$41.98

$1.18M

Gallagher Thomas P.

7 Jul 2026

Chairman & CEO

Sold after exercise indirect

28,228

$42.27

$1.19M

Brown Shelly

6 Jul 2026

EVP, Chief Strategy Officer

Sold after exercise

16,000

$42.13

$674.08K

Deitzel Edward

6 Jul 2026

EVP, CRO, CCO MIAX Exchanges

Sold after exercise

11,000

$42.04

$462.44K

Jayabalan Harish

6 Jul 2026

EVP, CISO and CRO

Sold after exercise

20,000

$42.12

$842.40K

Gallagher Thomas P.

6 Jul 2026

Chairman & CEO

Sold after exercise indirect

41,772

$42.09

$1.76M

Schafer Douglas M. JR

2 Jul 2026

EVP and CIO

Sold after exercise

48,000

$41.22

$1.98M

Comly Barbara J.

2 Jul 2026

EVP, GC & Corporate Secretary

Sold after exercise

28,000

$41.22

$1.15M

Eckert Kurt M.

2 Jul 2026

Director

Sold after exercise

5,250

$39.35

$206.59K

Teekell Judson Gray

2 Jul 2026

Director

Sold on a plan

3,000

$40.00

$120.00K

Raymond Mark F.

16 Jun 2026

Director

Exercised, kept

16,000

$12.00

$192.00K

Brown Shelly

15 Jun 2026

EVP, Chief Strategy Officer

Sold on a plan

4,714

$44.23

$208.50K

Stahlin Paul

11 Jun 2026

Director

Exercised, kept

4,000

$12.00

$48.00K

Schwarzkopf Cynthia

11 Jun 2026

Director

Sold after exercise

19,500

$41.73

$813.74K

Jayabalan Harish

9 Jun 2026

EVP, CISO and CRO

Sold after exercise

9,783

$40.04

$391.71K

Stahlin Paul

9 Jun 2026

Director

Exercised, kept

7,000

$12.00

$84.00K

Jayabalan Harish

8 Jun 2026

EVP, CISO and CRO

Sold after exercise

10,217

$40.12

$409.91K

Gallagher Thomas P.

2 Jun 2026

Chairman & CEO

Sold after exercise indirect

70,000

$42.36

$2.97M

Brown Shelly

2 Jun 2026

EVP, Chief Strategy Officer

Sold after exercise

16,000

$42.12

$673.92K

Schafer Douglas M. JR

2 Jun 2026

EVP and CIO

Sold after exercise

48,000

$42.84

$2.06M

Deitzel Edward

2 Jun 2026

EVP, CRO, CCO MIAX Exchanges

Sold after exercise

11,000

$42.16

$463.76K

Comly Barbara J.

2 Jun 2026

EVP, GC & Corporate Secretary

Sold after exercise

28,000

$42.85

$1.20M

Eckert Kurt M.

2 Jun 2026

Director

Sold after exercise

5,250

$42.76

$224.49K

Teekell Judson Gray

2 Jun 2026

Director

Sold on a plan

3,000

$42.78

$128.34K

Teekell Judson Gray

19 May 2026

Director

Exercised, kept

22,667

$12.00

$272.00K

Emmons Lance

15 May 2026

EVP and CFO

Sold on a plan

35,000

$56.36

$1.97M

Gallagher Thomas P.

11 May 2026

Chairman & CEO

Exercised, kept

24,999

$12.00

$299.99K

Gallagher Thomas P.

5 May 2026

Chairman & CEO

Sold after exercise indirect

15,771

$47.92

$755.75K

Comly Barbara J.

4 May 2026

EVP, GC & Corporate Secretary

Sold after exercise

28,000

$47.26

$1.32M

Eckert Kurt M.

4 May 2026

Director

Sold after exercise

5,625

$47.29

$266.01K

Schafer Douglas M. JR

4 May 2026

EVP and CIO

Sold after exercise

48,000

$47.25

$2.27M

Teekell Judson Gray

4 May 2026

Director

Sold on a plan

3,000

$47.30

$141.90K

Brown Shelly

4 May 2026

EVP, Chief Strategy Officer

Sold after exercise

16,000

$47.28

$756.48K

Deitzel Edward

4 May 2026

EVP, CRO, CCO MIAX Exchanges

Sold after exercise

11,000

$47.28

$520.08K

Gallagher Thomas P.

4 May 2026

Chairman & CEO

Sold after exercise indirect

54,229

$47.26

$2.56M

Comly Barbara J.

15 Apr 2026

EVP, GC & Corporate Secretary

Sold after exercise

29,667

$43.64

$1.29M

Gallagher Thomas P.

15 Apr 2026

Chairman & CEO

Sold after exercise

49,900

$43.68

$2.18M

Gallagher Thomas P.

15 Apr 2026

Chairman & CEO

Sold after exercise indirect

104,124

$43.36

$4.51M

Gallagher Thomas P.

15 Apr 2026

Chairman & CEO

Sold after exercise indirect

70,001

$43.36

$3.04M

Beckelman John

9 Apr 2026

Director

Exercised, kept

8,667

$12.00

$104.00K

Deitzel Edward

8 Apr 2026

EVP, CRO, CCO MIAX Exchanges

Sold after exercise

7,572

$42.02

$318.18K

Brown Shelly

8 Apr 2026

EVP, Chief Strategy Officer

Sold after exercise

16,434

$42.08

$691.54K

Brown Shelly

7 Apr 2026

EVP, Chief Strategy Officer

Sold on a plan

900

$42.00

$37.80K

Deitzel Edward

7 Apr 2026

EVP, CRO, CCO MIAX Exchanges

Sold after exercise

4,001

$42.00

$168.04K

Deitzel Edward

7 Apr 2026

EVP, CRO, CCO MIAX Exchanges

Sold after exercise

762

$42.00

$32.00K

Brown Shelly

6 Apr 2026

EVP, Chief Strategy Officer

Sold on a plan

2,357

$41.33

$97.41K

Teekell Judson Gray

2 Apr 2026

Director

Sold on a plan

2,700

$40.00

$108.00K

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

Teekell Judson Gray

25 Mar 2026

Director

Sell

300

$40.00

$12.00K

Brown Shelly

23 Mar 2026

EVP, Chief Strategy Officer

Sold on a plan

25,932

$39.33

$1.02M

Eckert Kurt M.

19 Mar 2026

Director

Sold after exercise

37,917

$39.00

$1.48M

Schafer Douglas M. JR

17 Mar 2026

EVP and CIO

Sold after exercise

48,000

$39.74

$1.91M

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

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

2 Mar 2026

Director

Sold after exercise indirect

121,054

$40.92

$4.95M

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

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

MIAMI INTERNATIONAL HOLDINGS, INC.

By person

Individual transactions

What was left out