SCHAFER DOUGLAS M. JR

PrivateCIK: 2079445

Location

PRINCETON, NJ

→MIAMI INTERNATIONAL HOLDINGS, INC.

Sep 4, 2026·Sep 4, 2026

5 txn

TEEKELL JUDSON GRAY

→MIAMI INTERNATIONAL HOLDINGS, INC.

Sep 4, 2026·Sep 4, 2026

2 txn

SCHAFER DOUGLAS M. JR

→MIAMI INTERNATIONAL HOLDINGS, INC.

Aug 6, 2026·Aug 6, 2026

3 txn

TEEKELL JUDSON GRAY

→MIAMI INTERNATIONAL HOLDINGS, INC.

Aug 6, 2026·Aug 6, 2026

1 txn

BROWN DAVID A

→MIAMI INTERNATIONAL HOLDINGS, INC.

Jul 9, 2026·Jul 9, 2026

1 txn

SCHAFER DOUGLAS M. JR

→MIAMI INTERNATIONAL HOLDINGS, INC.

Jul 7, 2026·Jul 7, 2026

5 txn

SCHAFER DOUGLAS M. JR

144

→MIAMI INTERNATIONAL HOLDINGS, INC.

Jul 2, 2026·Jul 2, 2026

-3

SCHAFER DOUGLAS M. JR

→MIAMI INTERNATIONAL HOLDINGS, INC.

Jun 18, 2026·Jun 18, 2026

3 txn

BROWN DAVID A

→MIAMI INTERNATIONAL HOLDINGS, INC.

Jun 17, 2026·Jun 17, 2026

3 txn

SCHWARZKOPF CYNTHIA

→MIAMI INTERNATIONAL HOLDINGS, INC.

Jun 12, 2026·Jun 12, 2026

3 txn

SCHAFER DOUGLAS M. JR

→MIAMI INTERNATIONAL HOLDINGS, INC.

Jun 12, 2026·Jun 12, 2026

1 txn

SCHWARZKOPF CYNTHIA

144

→MIAMI INTERNATIONAL HOLDINGS, INC.

Jun 11, 2026·Jun 11, 2026

SCHAFER DOUGLAS M. JR

→MIAMI INTERNATIONAL HOLDINGS, INC.

Jun 4, 2026·Jun 4, 2026

3 txn

HORIZON KINETICS ASSET MANAGEMENT LLC

→MIAMI INTERNATIONAL HOLDINGS, INC.

May 21, 2026·May 21, 2026

1 txn

TEEKELL JUDSON GRAY

→MIAMI INTERNATIONAL HOLDINGS, INC.

May 19, 2026·May 19, 2026

3 txn

SCHAFER DOUGLAS M. JR

→MIAMI INTERNATIONAL HOLDINGS, INC.

May 5, 2026·May 5, 2026

3 txn

TEEKELL JUDSON GRAY

144

→MIAMI INTERNATIONAL HOLDINGS, INC.

May 4, 2026·May 4, 2026

-3

TEEKELL JUDSON GRAY

→MIAMI INTERNATIONAL HOLDINGS, INC.

Apr 3, 2026·Apr 3, 2026

1 txn

SMOLLEN JOHN

→MIAMI INTERNATIONAL HOLDINGS, INC.

Apr 1, 2026·Apr 1, 2026

1 txn

SOMMERS JILL E.

→MIAMI INTERNATIONAL HOLDINGS, INC.

Mar 31, 2026·Mar 31, 2026

3 txn

TEEKELL JUDSON GRAY

→MIAMI INTERNATIONAL HOLDINGS, INC.

Mar 26, 2026·Mar 26, 2026

1 txn

TEEKELL JUDSON GRAY

144

→MIAMI INTERNATIONAL HOLDINGS, INC.

Mar 25, 2026·Mar 25, 2026

SCHAFER DOUGLAS M. JR

→MIAMI INTERNATIONAL HOLDINGS, INC.

Mar 18, 2026·Mar 18, 2026

3 txn

SCHAFER DOUGLAS M. JR

144

→MIAMI INTERNATIONAL HOLDINGS, INC.

Mar 17, 2026·Mar 17, 2026

STAHL MURRAY

→MIAMI INTERNATIONAL HOLDINGS, INC.

Mar 6, 2026·Mar 6, 2026

5 txn

Page 1 of 2 · 49 total

Filer	Form	Target	Filed	Activity
SCHAFER DOUGLAS M. JRCIK · 2079445	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Sep 4, 2026 Sep 4, 2026	5txn
TEEKELL JUDSON GRAYCIK · 1959770	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Sep 4, 2026 Sep 4, 2026	2txn
SCHAFER DOUGLAS M. JRCIK · 2079445	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Aug 6, 2026 Aug 6, 2026	3txn
TEEKELL JUDSON GRAYCIK · 1959770	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Aug 6, 2026 Aug 6, 2026	1txn
BROWN DAVID ACIK · 1394399	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Jul 9, 2026 Jul 9, 2026	1txn
SCHAFER DOUGLAS M. JRCIK · 2079445	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Jul 7, 2026 Jul 7, 2026	5txn
SCHAFER DOUGLAS M. JRCIK · 2079445	144 Sale	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Jul 2, 2026 Jul 2, 2026	—
SCHAFER DOUGLAS M. JRCIK · 2079445	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Jun 18, 2026 Jun 18, 2026	3txn
BROWN DAVID ACIK · 1394399	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Jun 17, 2026 Jun 17, 2026	3txn
SCHWARZKOPF CYNTHIACIK · 2080596	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Jun 12, 2026 Jun 12, 2026	3txn
SCHAFER DOUGLAS M. JRCIK · 2079445	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Jun 12, 2026 Jun 12, 2026	1txn
SCHWARZKOPF CYNTHIACIK · 2080596	144 Sale	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Jun 11, 2026 Jun 11, 2026	—
SCHAFER DOUGLAS M. JRCIK · 2079445	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Jun 4, 2026 Jun 4, 2026	3txn
HORIZON KINETICS ASSET MANAGEMENT LLCCIK · 1056823	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	May 21, 2026 May 21, 2026	1txn
TEEKELL JUDSON GRAYCIK · 1959770	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	May 19, 2026 May 19, 2026	3txn
SCHAFER DOUGLAS M. JRCIK · 2079445	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	May 5, 2026 May 5, 2026	3txn
TEEKELL JUDSON GRAYCIK · 1959770	144 Sale	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	May 4, 2026 May 4, 2026	—
TEEKELL JUDSON GRAYCIK · 1959770	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Apr 3, 2026 Apr 3, 2026	1txn
SMOLLEN JOHNCIK · 2080703	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Apr 1, 2026 Apr 1, 2026	1txn
SOMMERS JILL E.CIK · 1737622	3 Initial	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Mar 31, 2026 Mar 31, 2026	3txn
TEEKELL JUDSON GRAYCIK · 1959770	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Mar 26, 2026 Mar 26, 2026	1txn
TEEKELL JUDSON GRAYCIK · 1959770	144 Sale	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Mar 25, 2026 Mar 25, 2026	—
SCHAFER DOUGLAS M. JRCIK · 2079445	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Mar 18, 2026 Mar 18, 2026	3txn
SCHAFER DOUGLAS M. JRCIK · 2079445	144 Sale	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Mar 17, 2026 Mar 17, 2026	—
STAHL MURRAYCIK · 1207097	4 Trade	MIAMI INTERNATIONAL HOLDINGS, INC.CIK · 1438472	Mar 6, 2026 Mar 6, 2026	5txn

Page 1 of 2 · 49 total