Form 4 Tracker
MIAMI INTERNATIONAL HOLDINGS, INC.
MIAX

78 insider filings · Latest: Jun 16, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
May 4, 2026May 5 11:41 AMJudson Gray TeekellDirector
Sale
3,000$47.30$141.9K56,338(D)

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May 4, 2026May 5 11:32 AMDouglas M. Schafer JREVP and CIO
Sale
48,000$47.25$2.3M396,681(D)

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May 4, 2026May 5 11:31 AMKurt M. EckertDirector
Sale
5,625$47.29$266.0K142,375(D)

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May 4, 2026May 5 11:30 AMBarbara J. ComlyEVP, GC & Corporate Secretary
Sale
28,000$47.26$1.3M843,844(D)

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May 4, 2026May 4 8:32 PMJ. GRAY TEEKELL
Proposed Sale
9,000$47.17$424.5K

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May 4, 2026May 4 8:31 PMSHELLY BROWN
Proposed Sale
32,000$47.17$1.5M

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May 4, 2026May 4 8:31 PMEDWARD DEITZEL
Proposed Sale
33,000$47.17$1.6M

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Apr 15, 2026Apr 17 8:17 PMThomas P. GallagherDirector, Chairman & CEO
Sale
224,025$43.43$9.7M485,963(I)

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Apr 15, 2026Apr 17 8:15 PMBarbara J. ComlyEVP, GC & Corporate Secretary
Sale
29,667$43.64$1.3M843,844(D)

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Apr 15, 2026Apr 15 8:55 PMBARBARA J COMLY
Proposed Sale
141,667$42.91$6.1M

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Apr 15, 2026Apr 15 8:53 PMGALLAGHER INVESTMENTS LLC
Proposed Sale
454,125$42.91$19.5M

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Apr 15, 2026Apr 15 8:42 PMTHOMAS P GALLAGHER
Proposed Sale
49,900$42.91$2.1M

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Apr 8, 2026Apr 9 8:20 PMShelly BrownEVP, Chief Strategy Officer
Sale
16,434$42.08$691.5K325,047(D)

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Apr 8, 2026Apr 9 8:15 PMEdward DeitzelEVP, CRO, CCO MIAX Exchanges
Sale
7,572$42.02$318.2K116,221(D)

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Apr 7, 2026Apr 9 8:15 PMEdward DeitzelEVP, CRO, CCO MIAX Exchanges
Sale
4,763$42.00$200.0K116,221(D)

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Apr 7, 2026Apr 9 8:13 PMShelly BrownEVP, Chief Strategy Officer
Sale
900$42.00$37.8K325,047(D)

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Apr 6, 2026Apr 9 8:13 PMShelly BrownEVP, Chief Strategy Officer
Sale
2,357$41.33$97.4K325,047(D)

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Apr 7, 2026Apr 8 8:19 PMShelly BrownEVP, Chief Strategy Officer
Sale
900$42.00$37.8K324,147(D)

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Apr 6, 2026Apr 8 8:19 PMShelly BrownEVP, Chief Strategy Officer
Sale
2,357$41.33$97.4K325,047(D)

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Apr 7, 2026Apr 7 8:30 PMEDWARD DEITZEL
Proposed Sale
12,335$41.63$513.5K

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Jun 16, 2026Jun 18 8:39 PMCees VermaasCEO of TISEG
Grant/Award
4,793$40.244,793(D)

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Jun 16, 2026Jun 18 8:31 PMHarish JayabalanEVP, CISO and CRO
Grant/Award
37,293$40.2434,808(D)

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Jun 16, 2026Jun 18 8:29 PMEdward DeitzelEVP, CRO, CCO MIAX Exchanges
Grant/Award
9,586$40.247,101(D)

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Jun 16, 2026Jun 18 8:26 PMJohn SmollenEVP, New Product Development
Grant/Award
7,669$40.245,184(D)

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Jun 16, 2026Jun 18 8:24 PMDouglas M. Schafer JREVP and CIO
Grant/Award
23,966$40.2421,481(D)

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Jun 16, 2026Jun 18 8:21 PMLance EmmonsEVP and CFO
Grant/Award
38,346$40.2435,861(D)

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Jun 16, 2026Jun 18 8:17 PMShelly BrownEVP, Chief Strategy Officer
Grant/Award
38,346$40.2435,861(D)

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Jun 16, 2026Jun 18 8:16 PMBarbara J. ComlyEVP, GC & Corporate Secretary
Grant/Award
40,263$40.2437,778(D)

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Jun 16, 2026Jun 18 8:13 PMThomas P. GallagherDirector, Chairman & CEO
Grant/Award
239,660$40.24237,175(D)

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Jun 16, 2026Jun 17 9:07 PMDavid A BrownDirector
Grant/Award
5,142$40.245,142(D)

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Jun 16, 2026Jun 17 8:43 PMKenneth W. LozierDirector
Grant/Award
2,571$40.242,571(D)

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Jun 16, 2026Jun 17 8:40 PMJill E. SommersDirector
Grant/Award
2,571$40.242,571(D)

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Jun 16, 2026Jun 17 8:39 PMCynthia SchwarzkopfDirector
Grant/Award
5,142$40.245,142(D)

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Jun 16, 2026Jun 17 8:29 PMMark F. RaymondDirector
Option Exercise
16,000$12.000(D)

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Jun 16, 2026Jun 17 8:19 PMKurt M. EckertDirector
Grant/Award
7,713$40.247,713(D)

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Jun 11, 2026Jun 12 8:15 PMCynthia SchwarzkopfDirector
Option Exercise
19,500$12.000(D)

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Jun 11, 2026Jun 11 8:42 PMPaul StahlinDirector
Option Exercise
4,000$12.000(D)

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Jun 9, 2026Jun 11 8:42 PMPaul StahlinDirector
Option Exercise
7,000$12.004,000(D)

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Jun 9, 2026Jun 10 8:29 PMHarish JayabalanEVP, CISO and CRO
Option Exercise
9,783$12.00834(D)

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Jun 8, 2026Jun 10 8:29 PMHarish JayabalanEVP, CISO and CRO
Option Exercise
10,217$12.0010,617(D)

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