Insider Transactions in Q3 2025 at Miami International Holdings, Inc. (MIAX)
Insider Transaction List (Q3 2025)
| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Sep 26
2025
|
Murray Stahl Director |
BUY
Open market or private purchase
|
Indirect |
4
+0.0%
|
$164
$41.76 P/Share
|
|
Sep 11
2025
|
John Smollen EVP Traded Products & Relation |
BUY
Exercise of conversion of derivative security
|
Direct |
150,000
+26.18%
|
$1,800,000
$12.0 P/Share
|
|
Sep 11
2025
|
John Smollen EVP Traded Products & Relation |
SELL
Payment of exercise price or tax liability
|
Direct |
52,054
-26.95%
|
$1,925,998
$37.39 P/Share
|
|
Sep 11
2025
|
Edward Deitzel EVP, CRO, CCO MIAX Exchanges |
BUY
Exercise of conversion of derivative security
|
Direct |
16,666
+11.94%
|
$199,992
$12.0 P/Share
|
|
Sep 10
2025
|
Shelly Brown EVP, Strat. Planning & BD |
SELL
Payment of exercise price or tax liability
|
Direct |
16,283
-4.96%
|
$586,188
$36.81 P/Share
|
|
Sep 09
2025
|
Harish Jayabalan EVP, CISO and CRO |
SELL
Payment of exercise price or tax liability
|
Direct |
1,980
-2.63%
|
$73,260
$37.3 P/Share
|
|
Sep 09
2025
|
Harish Jayabalan EVP, CISO and CRO |
BUY
Exercise of conversion of derivative security
|
Direct |
25,000
+13.57%
|
$300,000
$12.0 P/Share
|
|
Sep 09
2025
|
Edward Deitzel EVP, CRO, CCO MIAX Exchanges |
SELL
Payment of exercise price or tax liability
|
Direct |
38,090
-26.38%
|
$1,409,330
$37.3 P/Share
|
|
Sep 09
2025
|
Edward Deitzel EVP, CRO, CCO MIAX Exchanges |
BUY
Exercise of conversion of derivative security
|
Direct |
62,500
+30.21%
|
$750,000
$12.0 P/Share
|
|
Aug 28
2025
|
Murray Stahl Director |
BUY
Open market or private purchase
|
Indirect |
34,470
+0.75%
|
$1,240,920
$36.1 P/Share
|
|
Aug 26
2025
|
Shelly Brown EVP, Strat. Planning & BD |
SELL
Payment of exercise price or tax liability
|
Direct |
11,047
-3.26%
|
$364,551
$33.9 P/Share
|
|
Aug 26
2025
|
Thomas P. Gallagher Chairman & CEO |
SELL
Payment of exercise price or tax liability
|
Indirect |
192,220
-9.42%
|
$6,343,260
$33.9 P/Share
|
|
Aug 15
2025
|
Cynthia Schwarzkopf Director |
BUY
Conversion of derivative security
|
Direct |
81,308
+33.25%
|
-
|
|
Aug 15
2025
|
Mark F. Raymond Director |
BUY
Conversion of derivative security
|
Direct |
43,827
+33.03%
|
-
|
|
Aug 15
2025
|
Judson Gray Teekell Director |
BUY
Conversion of derivative security
|
Indirect |
68,131
+28.16%
|
-
|
|
Aug 15
2025
|
Judson Gray Teekell Director |
BUY
Conversion of derivative security
|
Direct |
61,242
+32.94%
|
-
|
|
Aug 15
2025
|
Thomas P. Gallagher Chairman & CEO |
BUY
Conversion of derivative security
|
Indirect |
135,895
+3.12%
|
-
|
|
Aug 15
2025
|
Thomas P. Gallagher Chairman & CEO |
BUY
Conversion of derivative security
|
Direct |
573,963
+49.48%
|
-
|
|
Aug 15
2025
|
Kurt M. Eckert Director |
BUY
Conversion of derivative security
|
Direct |
46,875
+21.88%
|
-
|
|
Aug 15
2025
|
Barbara J. Comly EVP, GC & Corporate Secretary |
BUY
Conversion of derivative security
|
Direct |
231,117
+12.44%
|
-
|
|
Aug 15
2025
|
Harish Jayabalan EVP, CISO and CRO |
BUY
Conversion of derivative security
|
Direct |
43,942
+23.64%
|
-
|
|
Aug 15
2025
|
Edward Deitzel EVP, CRO, CCO MIAX Exchanges |
BUY
Conversion of derivative security
|
Direct |
49,694
+19.07%
|
-
|
|
Aug 15
2025
|
Shelly Brown EVP, Strat. Planning & BD |
BUY
Conversion of derivative security
|
Direct |
200,975
+18.65%
|
-
|
|
Aug 15
2025
|
Talal Jassim Al Bahar Director |
BUY
Conversion of derivative security
|
Indirect |
238,462
+6.18%
|
-
|
|
Aug 15
2025
|
John Smollen EVP Traded Products & Relation |
BUY
Conversion of derivative security
|
Indirect |
91,666
+50.0%
|
-
|
|
Aug 15
2025
|
John Smollen EVP Traded Products & Relation |
BUY
Conversion of derivative security
|
Direct |
73,173
+51.77%
|
-
|
|
Aug 15
2025
|
Douglas M. Schafer Jr EVP and CIO |
BUY
Conversion of derivative security
|
Direct |
387,796
+20.98%
|
-
|
|
Aug 15
2025
|
Paul Stahlin Director |
BUY
Conversion of derivative security
|
Direct |
24,083
+32.23%
|
-
|
|
Aug 15
2025
|
Lance Emmons EVP and CFO |
BUY
Conversion of derivative security
|
Direct |
57,646
+37.97%
|
-
|
|
Aug 14
2025
|
Lance Emmons EVP and CFO |
BUY
Open market or private purchase
|
Indirect |
4
+50.0%
|
$124
$31.44 P/Share
|
|
Aug 13
2025
|
Mark I. Massad Director |
BUY
Open market or private purchase
|
Indirect |
4,500
+50.0%
|
$103,500
$23.0 P/Share
|
|
Aug 13
2025
|
Mark I. Massad Director |
BUY
Open market or private purchase
|
Direct |
3,500
+50.0%
|
$80,500
$23.0 P/Share
|
|
Aug 13
2025
|
Kenneth W. Lozier Director |
BUY
Open market or private purchase
|
Direct |
1,000
+50.0%
|
$23,000
$23.0 P/Share
|
|
Aug 13
2025
|
Thomas P. Gallagher Chairman & CEO |
BUY
Open market or private purchase
|
Direct |
12,000
+50.0%
|
$276,000
$23.0 P/Share
|
|
Aug 13
2025
|
Edward Deitzel EVP, CRO, CCO MIAX Exchanges |
BUY
Open market or private purchase
|
Direct |
100
+0.31%
|
$2,300
$23.0 P/Share
|
|
Aug 13
2025
|
John Smollen EVP Traded Products & Relation |
BUY
Open market or private purchase
|
Direct |
5,000
+40.9%
|
$115,000
$23.0 P/Share
|
|
Aug 13
2025
|
Barbara J. Comly EVP, GC & Corporate Secretary |
SELL
Payment of exercise price or tax liability
|
Direct |
288,075
-33.15%
|
$6,625,725
$23.0 P/Share
|
|
Aug 13
2025
|
Jamil Nazarali Director |
BUY
Open market or private purchase
|
Direct |
2,500
+50.0%
|
$57,500
$23.0 P/Share
|
|
Aug 13
2025
|
Paul Stahlin Director |
BUY
Open market or private purchase
|
Direct |
1,000
+50.0%
|
$23,000
$23.0 P/Share
|
|
Aug 13
2025
|
Harish Jayabalan EVP, CISO and CRO |
BUY
Open market or private purchase
|
Direct |
2,500
+27.95%
|
$57,500
$23.0 P/Share
|
|
Aug 13
2025
|
Lisa Moore Director |
BUY
Open market or private purchase
|
Direct |
5,500
+50.0%
|
$126,500
$23.0 P/Share
|