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Detailed Insider History for:
MIAMI INTERNATIONAL HOLDINGS INC: MIAX
Price: 6/12/26 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$43.29 $57.14 $28.63 $4,109 95 1,394 0.0% 6.1% 58.54% 9.70%
Exch Sector Industry Sub-Industry
NYSE Finance, Insurance, And Real Estate Security And Commodity Brokers, Dealers, Exchanges, And Services Security Brokers, Dealers & Flotation Companies
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
BROWN SHELLY
VP
JS
$147,619
3,619
---
6/11/26
---
$40.79
321,428
-1.1
D
R
6/12/26 - 4:19:29 pm
2
    
 
DEITZEL EDWARD
VP,CCO
JS
$242,252
5,939
---
6/11/26
---
$40.79
110,282
-5.1
D
R
6/12/26 - 4:17:25 pm
3
    
 
SCHAFER DOUGLAS M JR
VP,CIO
JS
$1,328,326
32,565
---
6/11/26
---
$40.79
364,116
-8.2
D
R
6/12/26 - 4:16:14 pm
4
    
 
SCHWARZKOPF CYNTHIA
DIR
OS
$813,735
19,500
---
6/11/26
---
$41.73
81,308
-19.3
D
10b
6/12/26 - 4:15:54 pm
5
    
 
SCHWARZKOPF CYNTHIA
DIR
OE
$234,000
19,500
---
6/11/26
---
$12.00
100,808
24.0
D
10b
6/12/26 - 4:15:54 pm
6
    
 
STAHLIN PAUL
DIR
OS*
$48,010
1,177
---
6/11/26
---
$40.79
34,906
-3.3
D
---
6/11/26 - 4:42:39 pm
7
9m
1
100%
561,600,000%
2
STAHLIN PAUL
DIR
OE*
$132,000
11,000
6/9/26
6/11/26
---
$12.00
36,083
43.9
D
---
6/11/26 - 4:42:39 pm
8
    
 
JAYABALAN HARISH
VP
OS
$801,617
20,000
6/8/26
6/9/26
---
$40.04
73,405
-21.4
D
10b
6/10/26 - 4:29:07 pm
9
    
 
JAYABALAN HARISH
VP
OE
$240,000
20,000
6/8/26
6/9/26
---
$12.00
83,622
31.4
D
10b
6/10/26 - 4:29:07 pm
10
    
 
TEEKELL JUDSON GRAY
DIR
AS
$128,340
3,000
---
6/2/26
---
$42.78
71,014
-4.1
D
10b
6/4/26 - 4:55:04 pm
11
    
 
ECKERT KURT M
DIR
OS
$224,490
5,250
---
6/2/26
---
$42.76
142,375
-3.6
D
10b
6/4/26 - 4:52:25 pm
12
    
 
ECKERT KURT M
DIR
OE
$63,000
5,250
---
6/2/26
---
$12.00
147,625
3.7
D
10b
6/4/26 - 4:52:25 pm
13
    
 
COMLY BARBARA J
VP,GC,SEC
OS
$1,199,800
28,000
---
6/2/26
---
$42.85
843,844
-3.2
D
10b
6/4/26 - 4:46:09 pm
14
    
 
COMLY BARBARA J
VP,GC,SEC
OE
$336,000
28,000
---
6/2/26
---
$12.00
871,844
3.3
D
10b
6/4/26 - 4:46:09 pm
15
    
 
DEITZEL EDWARD
VP,CCO
OS
$463,760
11,000
---
6/2/26
---
$42.16
116,221
-8.6
D
10b
6/4/26 - 4:44:39 pm
16
    
 
DEITZEL EDWARD
VP,CCO
OE
$132,000
11,000
---
6/2/26
---
$12.00
127,221
9.5
D
10b
6/4/26 - 4:44:39 pm
17
    
 
SCHAFER DOUGLAS M JR
VP,CIO
OS
$2,056,320
48,000
---
6/2/26
---
$42.84
396,681
-10.8
D
10b
6/4/26 - 4:40:40 pm
18
    
 
SCHAFER DOUGLAS M JR
VP,CIO
OE
$576,000
48,000
---
6/2/26
---
$12.00
444,681
12.1
D
10b
6/4/26 - 4:40:40 pm
19
    
 
BROWN SHELLY
VP
OS
$673,920
16,000
---
6/2/26
---
$42.12
325,047
-4.7
D
10b
6/4/26 - 4:37:44 pm
20
    
 
BROWN SHELLY
VP
OE
$192,000
16,000
---
6/2/26
---
$12.00
341,047
4.9
D
10b
6/4/26 - 4:37:44 pm
21
    
 
GALLAGHER THOMAS P
CB,CEO,DIR
OS
$2,965,200
70,000
---
6/2/26
---
$42.36
1,723,275
-3.9
I
10b
6/4/26 - 4:37:05 pm
22
    
 
GALLAGHER THOMAS P
CB,CEO,DIR
OE
$840,000
70,000
---
6/2/26
---
$12.00
1,793,275
4.1
I
10b
6/4/26 - 4:37:05 pm
23
    
 
HORIZON KINETICS ASSET MANAGEMENT LLC
BO
JS
---
2,455,744
---
5/19/26
---
---
2,170,898
-53.1
I
---
5/21/26 - 5:21:22 pm
24
    
 
TEEKELL JUDSON GRAY
DIR
OS*
$272,059
4,991
---
5/19/26
---
$54.51
74,014
-6.3
D
---
5/19/26 - 4:34:48 pm
25
    
 
TEEKELL JUDSON GRAY
DIR
OE*
$272,004
22,667
---
5/19/26
---
$12.00
79,005
40.2
D
---
5/19/26 - 4:34:48 pm
26
    
 
EMMONS LANCE
VP,CFO
AS
$1,972,600
35,000
---
5/15/26
---
$56.36
84,262
-29.3
D
10b
5/18/26 - 4:52:47 pm
27
    
 
GALLAGHER THOMAS P
CB,CEO,DIR
OB
$299,988
24,999
---
5/11/26
---
$12.00
510,962
5.1
D
---
5/13/26 - 4:26:20 pm
28
    
 
GALLAGHER THOMAS P
CB,CEO,DIR
OS
$755,746
15,771
---
5/5/26
---
$47.92
1,723,275
-0.9
I
10b
5/7/26 - 4:07:00 pm
29
    
 
GALLAGHER THOMAS P
CB,CEO,DIR
OE
$189,252
15,771
---
5/5/26
---
$12.00
1,739,046
0.9
I
10b
5/7/26 - 4:07:00 pm
30
    
 
GALLAGHER THOMAS P
CB,CEO,DIR
OS
$2,562,863
54,229
---
5/4/26
---
$47.26
1,723,275
-3.1
I
10b
5/5/26 - 8:17:55 am
31
    
 
GALLAGHER THOMAS P
CB,CEO,DIR
OE
$650,748
54,229
---
5/4/26
---
$12.00
1,777,504
3.1
I
10b
5/5/26 - 8:17:55 am
32
    
 
DEITZEL EDWARD
VP,CCO
OS
$520,080
11,000
---
5/4/26
---
$47.28
116,221
-8.6
D
10b
5/5/26 - 8:16:56 am
33
    
 
DEITZEL EDWARD
VP,CCO
OE
$132,000
11,000
---
5/4/26
---
$12.00
127,221
9.5
D
10b
5/5/26 - 8:16:56 am
34
    
 
BROWN SHELLY
VP
OS
$756,480
16,000
---
5/4/26
---
$47.28
325,047
-4.7
D
10b
5/5/26 - 7:43:41 am
35
    
 
BROWN SHELLY
VP
OE
$192,000
16,000
---
5/4/26
---
$12.00
341,047
4.9
D
10b
5/5/26 - 7:43:41 am
36
    
 
TEEKELL JUDSON GRAY
DIR
AS
$141,900
3,000
---
5/4/26
---
$47.30
56,338
-5.1
D
10b
5/5/26 - 7:41:29 am
37
    
 
SCHAFER DOUGLAS M JR
VP,CIO
OS
$2,268,000
48,000
---
5/4/26
---
$47.25
396,681
-10.8
D
10b
5/5/26 - 7:32:52 am
38
    
 
SCHAFER DOUGLAS M JR
VP,CIO
OE
$576,000
48,000
---
5/4/26
---
$12.00
444,681
12.1
D
10b
5/5/26 - 7:32:52 am
39
    
 
ECKERT KURT M
DIR
OS
$266,006
5,625
---
5/4/26
---
$47.29
142,375
-3.8
D
10b
5/5/26 - 7:31:26 am
40
    
 
ECKERT KURT M
DIR
OE
$67,500
5,625
---
5/4/26
---
$12.00
148,000
4.0
D
10b
5/5/26 - 7:31:26 am
41
    
 
COMLY BARBARA J
VP,GC,SEC
OS
$1,323,280
28,000
---
5/4/26
---
$47.26
843,844
-3.2
D
10b
5/5/26 - 7:30:42 am
42
    
 
COMLY BARBARA J
VP,GC,SEC
OE
$336,000
28,000
---
5/4/26
---
$12.00
871,844
3.3
D
10b
5/5/26 - 7:30:42 am
43
    
 
SITES ERIC
DIR
3
---
---
---
4/24/26
---
---
---
---
---
---
4/28/26 - 3:16:37 pm
44
    
 
GALLAGHER THOMAS P
CB,CEO,DIR
OS
$2,179,632
49,900
---
4/15/26
---
$43.68
485,963
-9.3
D
10b
4/17/26 - 4:17:10 pm
45
    
 
GALLAGHER THOMAS P
CB,CEO,DIR
OS
$7,550,060
174,125
---
4/15/26
---
$43.36
1,723,275
-9.2
I
10b
4/17/26 - 4:17:10 pm
46
    
 
GALLAGHER THOMAS P
CB,CEO,DIR
OE
$840,012
70,001
---
4/15/26
---
$12.00
1,897,400
3.8
I
10b
4/17/26 - 4:17:10 pm
47
    
 
COMLY BARBARA J
VP,GC,SEC
AS
$1,294,668
29,667
---
4/15/26
---
$43.64
843,844
-3.4
D
10b
4/17/26 - 4:15:46 pm
48
    
 
COMLY BARBARA J
VP,GC,SEC
OE
$356,004
29,667
---
4/15/26
---
$12.00
873,511
3.5
D
10b
4/17/26 - 4:15:46 pm
49
    
 
BECKELMAN JOHN
DIR
OB
$104,004
8,667
---
4/9/26
---
$12.00
8,667
New
D
---
4/10/26 - 6:41:12 pm
50
    
 
BROWN SHELLY
VP
OS
$691,543
16,434
---
4/8/26
---
$42.08
325,047
-4.8
D
10b
4/9/26 - 4:20:43 pm
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