LIVE FROM THE DATABASETRANSACTIONS 362,114COMPANIES 5,761LATEST TRADE Oct 16UPDATED Oct 16, 09:12 PM
MIAXCIK 0001438472

MIAMI INTERNATIONAL HOLDINGS, INC.

304 transactions by 25 insiders, from December 16, 2025 to October 2, 2026.

Transactions
30425 insiders
Bought · P
$623Kopen market
Sold · S
$79.3Mopen market
Net
−$78.7Mnet selling

Officers and directors

People inside the company. What they do with their own shares is the reason this data exists.

InsiderTradesPlannedBoughtSold
Thomas P. GallagherCEO4639/46—$32.3M
Shelly BrownChief3917/39—$5.0M
Edward DeitzelEVP3226/32—$2.9M
Barbara J. ComlyGC3221/32—$10.0M
Douglas M. Schafer Jr.EVP3125/31—$13.7M
Harish JayabalanEVP2318/23—$2.6M
Kurt M. EckertDir1815/18—$2.2M
Judson Gray TeekellDir137/13—$1.0M
Cynthia SchwarzkopfDir129/12—$1.2M
Murray StahlDir11—$623K$5.0M
Paul StahlinDir7———
Lance EmmonsCFO62/6—$3.5M
John BeckelmanDir4———
Mark F. RaymondDir4———
David A. BrownDir4———
John SmollenEVP4———
Kenneth W. LozierDir3———
Jill E. SommersDir3———
Lisa MooreDir2———
Eric SitesDir2———
Cees VermaasCEO2———
Talal Jassim Al-BaharDir2———
Mark I. MassadDir2———
Lee BeckerDir1———

Large holders and funds

Holders above 10%, often funds. They file the same form, but they trade for portfolio reasons, not because of what they know.

InsiderTradesPlannedBoughtSold
HORIZON KINETICS ASSET MANAGEMENT LLC10%1———

All transactions

304 in total, newest filings first.

InsiderDateCodeSharesPriceValue
Douglas M. Schafer Jr.EVPDERIVOct 2MPLAN40,000$0.00—?
Douglas M. Schafer Jr.EVPOct 2SPLAN40,000$33.34$1.3M
Douglas M. Schafer Jr.EVPOct 2MPLAN40,000$12.00$480K
Harish JayabalanEVPDERIVSep 25M8,333$0.00—?
Harish JayabalanEVPSep 25M8,333$12.00$100K
Shelly BrownChiefSep 16SPLAN21,217$38.61$819K
Thomas P. GallagherCEODERIVSep 3MPLAN4,464$0.00—?
Thomas P. GallagherCEODERIVSep 3MPLAN13,140$0.00—?
Thomas P. GallagherCEODERIVSep 3MPLAN8,333$0.00—?
Thomas P. GallagherCEODERIVSep 3MPLAN16,666$0.00—?
Thomas P. GallagherCEODERIVSep 3MPLAN47,000$0.00—?
Thomas P. GallagherCEOSep 3MPLAN4,464$22.40$100K
Thomas P. GallagherCEOSep 3MPLAN13,140$15.22$200K
Thomas P. GallagherCEOSep 3MPLAN8,333$12.00$100K
Thomas P. GallagherCEOSep 3MPLAN16,666$12.00$200K
Thomas P. GallagherCEOSep 3SPLAN47,000$42.43$2.0M
Thomas P. GallagherCEOSep 3MPLAN47,000$12.00$564K
Barbara J. ComlyGCDERIVSep 2MPLAN44,445$0.00—?
Barbara J. ComlyGCSep 2SPLAN44,445$40.49$1.8M
Barbara J. ComlyGCSep 2MPLAN44,445$12.00$533K
Edward DeitzelEVPDERIVSep 3MPLAN11,000$0.00—?
Edward DeitzelEVPSep 3SPLAN11,000$42.21$464K
Edward DeitzelEVPSep 3MPLAN11,000$12.00$132K
Douglas M. Schafer Jr.EVPDERIVSep 2MPLAN4,666$0.00—?
Douglas M. Schafer Jr.EVPDERIVSep 2MPLAN43,334$0.00—?
Douglas M. Schafer Jr.EVPSep 2SPLAN48,000$40.48$1.9M
Douglas M. Schafer Jr.EVPSep 2MPLAN4,666$12.00$56K
Douglas M. Schafer Jr.EVPSep 2MPLAN43,334$12.00$520K
Judson Gray TeekellDirSep 2SPLAN3,000$40.89$123K
Judson Gray TeekellDirSep 2SPLAN5,545$41.58$231K
Thomas P. GallagherCEOAug 19SPLAN149,700$41.13$6.2M
Thomas P. GallagherCEOAug 18FPLAN150,300$42.41$6.4M
Barbara J. ComlyGCAug 18F43,420$42.41$1.8M
Cynthia SchwarzkopfDirDERIVAug 17MPLAN5,000$0.00—?
Cynthia SchwarzkopfDirAug 17SPLAN5,000$42.85$214K
Cynthia SchwarzkopfDirAug 17MPLAN5,000$12.00$60K
Lance EmmonsCFOAug 17SPLAN35,000$42.83$1.5M
Douglas M. Schafer Jr.EVPDERIVAug 4MPLAN48,000$0.00—?
Douglas M. Schafer Jr.EVPAug 4SPLAN48,000$45.71$2.2M
Douglas M. Schafer Jr.EVPAug 4MPLAN48,000$12.00$576K
Judson Gray TeekellDirAug 4SPLAN3,000$45.79$137K
Harish JayabalanEVPDERIVAug 4MPLAN5,832$0.00—?
Harish JayabalanEVPDERIVAug 4MPLAN14,168$0.00—?
Harish JayabalanEVPAug 4SPLAN20,000$45.90$918K
Harish JayabalanEVPAug 4MPLAN5,832$15.22$89K
Harish JayabalanEVPAug 4MPLAN14,168$12.00$170K
Thomas P. GallagherCEODERIVAug 4MPLAN48,334$0.00—?
Thomas P. GallagherCEOAug 4SPLAN48,334$45.69$2.2M
Thomas P. GallagherCEOAug 4MPLAN48,334$12.00$580K
Kurt M. EckertDirDERIVAug 4MPLAN1,063$0.00—?
Kurt M. EckertDirAug 4SPLAN1,063$45.80$49K
Kurt M. EckertDirAug 4MPLAN1,063$12.00$13K
Edward DeitzelEVPDERIVAug 4MPLAN11,000$0.00—?
Edward DeitzelEVPAug 4SPLAN11,000$45.78$504K
Edward DeitzelEVPAug 4MPLAN11,000$12.00$132K
Barbara J. ComlyGCDERIVAug 4MPLAN44,445$0.00—?
Barbara J. ComlyGCAug 4SPLAN44,445$45.69$2.0M
Barbara J. ComlyGCAug 4MPLAN44,445$12.00$533K
Cynthia SchwarzkopfDirDERIVJul 15MPLAN5,000$0.00—?
Cynthia SchwarzkopfDirJul 15SPLAN5,000$42.00$210K
Cynthia SchwarzkopfDirJul 15MPLAN5,000$12.00$60K
Thomas P. GallagherCEODERIVJul 13MPLAN70,000$0.00—?
Thomas P. GallagherCEOJul 13SPLAN70,000$42.52$3.0M
Thomas P. GallagherCEOJul 13MPLAN70,000$12.00$840K
Barbara J. ComlyGCDERIVJul 13MPLAN28,000$0.00—?
Barbara J. ComlyGCJul 13SPLAN28,000$41.98$1.2M
Barbara J. ComlyGCJul 13MPLAN28,000$12.00$336K
David A. BrownDirJul 8F171$43.72$7K
Judson Gray TeekellDirJul 2SPLAN3,000$40.00$120K
Douglas M. Schafer Jr.EVPDERIVJul 2MPLAN42,000$0.00—?
Douglas M. Schafer Jr.EVPDERIVJul 2MPLAN6,000$0.00—?
Douglas M. Schafer Jr.EVPJul 2SPLAN48,000$41.22$2.0M
Douglas M. Schafer Jr.EVPJul 2MPLAN42,000$12.00$504K
Douglas M. Schafer Jr.EVPJul 2MPLAN6,000$12.00$72K
Harish JayabalanEVPDERIVJul 6MPLAN2,499$0.00—?
Harish JayabalanEVPDERIVJul 6MPLAN16,667$0.00—?
Harish JayabalanEVPDERIVJul 6MPLAN834$0.00—?
Harish JayabalanEVPJul 6SPLAN20,000$42.12$842K
Harish JayabalanEVPJul 6MPLAN2,499$12.00$30K
Harish JayabalanEVPJul 6MPLAN16,667$12.00$200K
Harish JayabalanEVPJul 6MPLAN834$12.00$10K
Thomas P. GallagherCEODERIVJul 7MPLAN28,228$0.00—?
Thomas P. GallagherCEODERIVJul 6MPLAN41,772$0.00—?
Thomas P. GallagherCEOJul 7SPLAN28,228$42.27$1.2M
Thomas P. GallagherCEOJul 7MPLAN28,228$12.00$339K
Thomas P. GallagherCEOJul 6SPLAN41,772$42.09$1.8M
Thomas P. GallagherCEOJul 6MPLAN41,772$12.00$501K
Kurt M. EckertDirDERIVJul 2MPLAN5,250$0.00—?
Kurt M. EckertDirJul 2SPLAN5,250$39.35$207K
Kurt M. EckertDirJul 2MPLAN5,250$12.00$63K
Edward DeitzelEVPDERIVJul 6MPLAN3,667$0.00—?
Edward DeitzelEVPDERIVJul 6MPLAN7,333$0.00—?
Edward DeitzelEVPJul 6SPLAN11,000$42.04$462K
Edward DeitzelEVPJul 6MPLAN3,667$12.00$44K
Edward DeitzelEVPJul 6MPLAN7,333$12.00$88K
Barbara J. ComlyGCDERIVJul 2MPLAN28,000$0.00—?
Barbara J. ComlyGCJul 2SPLAN28,000$41.22$1.2M
Barbara J. ComlyGCJul 2MPLAN28,000$12.00$336K
Shelly BrownChiefDERIVJul 6MPLAN16,000$0.00—?
Shelly BrownChiefJul 6SPLAN16,000$42.13$674K
Shelly BrownChiefJul 6MPLAN16,000$12.00$192K
John SmollenEVPDERIVJun 16A5,184$0.00—?
John SmollenEVPDERIVJun 16A2,485$0.00—?
John SmollenEVPJun 16A7,455$0.00—
Cees VermaasCEODERIVJun 16A4,793$0.00—?
Cees VermaasCEOJun 16A4,660$0.00—
Douglas M. Schafer Jr.EVPDERIVJun 16A21,481$0.00—?
Douglas M. Schafer Jr.EVPDERIVJun 16A2,485$0.00—?
Douglas M. Schafer Jr.EVPJun 16A23,298$0.00—
Harish JayabalanEVPDERIVJun 16A34,808$0.00—?
Harish JayabalanEVPDERIVJun 16A2,485$0.00—?
Harish JayabalanEVPJun 16A4,660$0.00—
Thomas P. GallagherCEODERIVJun 16A237,175$0.00—?
Thomas P. GallagherCEODERIVJun 16A2,485$0.00—?
Thomas P. GallagherCEOJun 16A232,977$0.00—
Lance EmmonsCFODERIVJun 16A35,861$0.00—?
Lance EmmonsCFODERIVJun 16A2,485$0.00—?
Lance EmmonsCFOJun 16A37,276$0.00—
Edward DeitzelEVPDERIVJun 16A7,101$0.00—?
Edward DeitzelEVPDERIVJun 16A2,485$0.00—?
Edward DeitzelEVPJun 16A9,319$0.00—
Barbara J. ComlyGCDERIVJun 16A37,778$0.00—?
Barbara J. ComlyGCDERIVJun 16A2,485$0.00—?
Barbara J. ComlyGCJun 16A39,140$0.00—
Shelly BrownChiefDERIVJun 16A35,861$0.00—?
Shelly BrownChiefDERIVJun 16A2,485$0.00—?
Shelly BrownChiefJun 16A37,276$0.00—
Lisa MooreDirJun 16A4,970$0.00—
Lisa MooreDirJun 15A2,267$0.00—
Mark I. MassadDirJun 16A4,970$0.00—
Mark I. MassadDirJun 15A2,267$0.00—
Cynthia SchwarzkopfDirDERIVJun 16A5,142$0.00—?
Cynthia SchwarzkopfDirJun 16A4,970$0.00—
Cynthia SchwarzkopfDirJun 15A2,267$0.00—
Mark F. RaymondDirDERIVJun 16M16,000$0.00—?
Mark F. RaymondDirJun 16A4,970$0.00—
Mark F. RaymondDirJun 16M16,000$12.00$192K
Mark F. RaymondDirJun 15A2,267$0.00—
Judson Gray TeekellDirJun 16A4,970$0.00—
Judson Gray TeekellDirJun 15A2,267$0.00—
Jill E. SommersDirDERIVJun 16A2,571$0.00—?
Jill E. SommersDirJun 16A4,970$0.00—
Jill E. SommersDirJun 15A1,113$0.00—
Paul StahlinDirJun 16A4,970$0.00—
Paul StahlinDirJun 15A2,267$0.00—
Eric SitesDirJun 16A4,970$0.00—
Eric SitesDirJun 15A714$0.00—
Kenneth W. LozierDirDERIVJun 16A2,571$0.00—?
Kenneth W. LozierDirJun 16A4,970$0.00—
Kenneth W. LozierDirJun 15A2,267$0.00—
Kurt M. EckertDirDERIVJun 16A7,713$0.00—?
Kurt M. EckertDirJun 16A4,970$0.00—
Kurt M. EckertDirJun 15A2,267$0.00—
Shelly BrownChiefJun 15SPLAN4,714$44.23$209K
Lee BeckerDirJun 15A2,267$0.00—
John BeckelmanDirJun 16A4,970$0.00—
John BeckelmanDirJun 15A2,267$0.00—
David A. BrownDirDERIVJun 16A5,142$0.00—?
David A. BrownDirJun 16A4,970$0.00—
David A. BrownDirJun 15A2,267$0.00—
Talal Jassim Al-BaharDirJun 16A4,970$0.00—
Talal Jassim Al-BaharDirJun 15A2,267$0.00—
Cynthia SchwarzkopfDirDERIVJun 11MPLAN19,500$0.00—?
Cynthia SchwarzkopfDirJun 11SPLAN19,500$41.73$814K
Cynthia SchwarzkopfDirJun 11MPLAN19,500$12.00$234K
Douglas M. Schafer Jr.EVPJun 11F32,565$40.79$1.3M
Edward DeitzelEVPJun 11F5,939$40.79$242K
Shelly BrownChiefJun 11F3,619$40.79$148K
Paul StahlinDirDERIVJun 11M4,000$0.00—?
Paul StahlinDirDERIVJun 9M7,000$0.00—?
Paul StahlinDirJun 11F1,177$40.79$48K
Paul StahlinDirJun 11M4,000$12.00$48K
Paul StahlinDirJun 9M7,000$12.00$84K
Harish JayabalanEVPDERIVJun 9MPLAN9,783$0.00—?
Harish JayabalanEVPDERIVJun 8MPLAN10,217$0.00—?
Harish JayabalanEVPJun 9SPLAN9,783$40.04$392K
Harish JayabalanEVPJun 9MPLAN9,783$12.00$117K
Harish JayabalanEVPJun 8SPLAN10,217$40.12$410K
Harish JayabalanEVPJun 8MPLAN10,217$12.00$123K
Douglas M. Schafer Jr.EVPDERIVJun 2MPLAN48,000$0.00—?
Douglas M. Schafer Jr.EVPJun 2SPLAN48,000$42.84$2.1M
Douglas M. Schafer Jr.EVPJun 2MPLAN48,000$12.00$576K
Judson Gray TeekellDirJun 2SPLAN3,000$42.78$128K
Thomas P. GallagherCEODERIVJun 2MPLAN70,000$0.00—?
Thomas P. GallagherCEOJun 2SPLAN70,000$42.36$3.0M
Thomas P. GallagherCEOJun 2MPLAN70,000$12.00$840K
Kurt M. EckertDirDERIVJun 2MPLAN5,250$0.00—?
Kurt M. EckertDirJun 2SPLAN5,250$42.76$224K
Kurt M. EckertDirJun 2MPLAN5,250$12.00$63K
Edward DeitzelEVPDERIVJun 2MPLAN11,000$0.00—?
Edward DeitzelEVPJun 2SPLAN11,000$42.16$464K
Edward DeitzelEVPJun 2MPLAN11,000$12.00$132K
Barbara J. ComlyGCDERIVJun 2MPLAN28,000$0.00—?
Barbara J. ComlyGCJun 2SPLAN28,000$42.85$1.2M
Barbara J. ComlyGCJun 2MPLAN28,000$12.00$336K
Shelly BrownChiefDERIVJun 2MPLAN16,000$0.00—?
Shelly BrownChiefJun 2SPLAN16,000$42.12$674K
Shelly BrownChiefJun 2MPLAN16,000$12.00$192K
HORIZON KINETICS ASSET MANAGEMENT LLC10%May 19J2,455,744$0.00—
Judson Gray TeekellDirDERIVMay 19M22,667$0.00—?