NYSE:MIAX | Insider Transactions | MIAMI INTERNATIONAL HOLDINGS, INC.

MIAX Insider Transactions

90 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–90; provenance stays internal.

MIAX insiders transaction timeline

PurchaseSale
2025-08-13: 12 purchases — Moore Lisa, Jayabalan Harish, Stahlin Paul and 6 more2025-08-14: 1 purchase — Emmons Lance2025-08-28: 2 purchases — HORIZON KINETICS ASSET MANAGEMENT LLC, STAHL MURRAY2025-09-26: 2 purchases — HORIZON KINETICS ASSET MANAGEMENT LLC, STAHL MURRAY2025-10-03: 2 purchases — HORIZON KINETICS ASSET MANAGEMENT LLC, STAHL MURRAY2025-12-12: 2 purchases — HORIZON KINETICS ASSET MANAGEMENT LLC, STAHL MURRAY2026-03-02: 4 sales — HORIZON KINETICS ASSET MANAGEMENT LLC, STAHL MURRAY2026-03-04: 4 purchases — HORIZON KINETICS ASSET MANAGEMENT LLC, STAHL MURRAY2026-03-05: 2 purchases — HORIZON KINETICS ASSET MANAGEMENT LLC, STAHL MURRAY2026-03-17: 1 sale — Schafer Douglas M. JR2026-03-19: 1 sale — Eckert Kurt M.2026-03-23: 1 sale — Brown Shelly2026-03-25: 1 sale — Teekell Judson Gray2026-04-02: 1 sale — Teekell Judson Gray2026-04-06: 2 sales — Brown Shelly2026-04-07: 4 sales — Deitzel Edward, Brown Shelly2026-04-08: 2 sales — Deitzel Edward, Brown Shelly2026-04-15: 4 sales — Gallagher Thomas P., Comly Barbara J.2026-05-04: 7 sales — Comly Barbara J., Eckert Kurt M., Brown Shelly and 4 more2026-05-05: 1 sale — Gallagher Thomas P.2026-05-15: 1 sale — Emmons Lance2026-06-02: 7 sales — Comly Barbara J., Eckert Kurt M., Deitzel Edward and 4 more2026-06-08: 1 sale — Jayabalan Harish2026-06-09: 1 sale — Jayabalan Harish2026-06-11: 1 sale — Schwarzkopf Cynthia2026-06-15: 1 sale — Brown Shelly2026-07-02: 4 sales — Teekell Judson Gray, Eckert Kurt M., Comly Barbara J. and 1 more2026-07-06: 4 sales — Gallagher Thomas P., Jayabalan Harish, Deitzel Edward and 1 more2026-07-07: 1 sale — Gallagher Thomas P.2026-07-13: 2 sales — Comly Barbara J., Gallagher Thomas P.2026-07-15: 1 sale — Schwarzkopf Cynthia2026-08-04: 7 sales — Comly Barbara J., Eckert Kurt M., Deitzel Edward and 4 more2026-08-17: 2 sales — Schwarzkopf Cynthia, Emmons Lance2026-08-19: 1 sale — Gallagher Thomas P.2025-08-132026-08-19
Insider profileRoleDateTransactionSharesPrice
Gallagher Thomas P.Chairman & CEO2026-08-19Sale149,700$41.13
Schwarzkopf CynthiaDirector2026-08-17Sale5,000$42.85
Emmons LanceEVP and CFO2026-08-17Sale35,000$42.83
Comly Barbara J.EVP, GC & Corporate Secretary2026-08-04Sale44,445$45.69
Eckert Kurt M.Director2026-08-04Sale1,063$45.80
Deitzel EdwardEVP, CRO, CCO MIAX Exchanges2026-08-04Sale11,000$45.78
Jayabalan HarishEVP, CISO and CRO2026-08-04Sale20,000$45.90
Gallagher Thomas P.Chairman & CEO2026-08-04Sale48,334$45.69
Schafer Douglas M. JREVP and CIO2026-08-04Sale48,000$45.71
Teekell Judson GrayDirector2026-08-04Sale3,000$45.79
Schwarzkopf CynthiaDirector2026-07-15Sale5,000$42
Comly Barbara J.EVP, GC & Corporate Secretary2026-07-13Sale28,000$41.98
Gallagher Thomas P.Chairman & CEO2026-07-13Sale70,000$42.52
Gallagher Thomas P.Chairman & CEO2026-07-07Sale28,228$42.27
Gallagher Thomas P.Chairman & CEO2026-07-06Sale41,772$42.09
Jayabalan HarishEVP, CISO and CRO2026-07-06Sale20,000$42.12
Deitzel EdwardEVP, CRO, CCO MIAX Exchanges2026-07-06Sale11,000$42.04
Brown ShellyEVP, Chief Strategy Officer2026-07-06Sale16,000$42.13
Teekell Judson GrayDirector2026-07-02Sale3,000$40
Eckert Kurt M.Director2026-07-02Sale5,250$39.35
Comly Barbara J.EVP, GC & Corporate Secretary2026-07-02Sale28,000$41.22
Schafer Douglas M. JREVP and CIO2026-07-02Sale48,000$41.22
Brown ShellyEVP, Chief Strategy Officer2026-06-15Sale4,714.0$44.23
Schwarzkopf CynthiaDirector2026-06-11Sale19,500.0$41.73
Jayabalan HarishEVP, CISO and CRO2026-06-09Sale9,783.0$40.04
Jayabalan HarishEVP, CISO and CRO2026-06-08Sale10,217.0$40.12
Comly Barbara J.EVP, GC & Corporate Secretary2026-06-02Sale28,000.0$42.85
Eckert Kurt M.Director2026-06-02Sale5,250.0$42.76
Deitzel EdwardEVP, CRO, CCO MIAX Exchanges2026-06-02Sale11,000.0$42.16
Brown ShellyEVP, Chief Strategy Officer2026-06-02Sale16,000.0$42.12
Gallagher Thomas P.Chairman & CEO2026-06-02Sale70,000.0$42.36
Schafer Douglas M. JREVP and CIO2026-06-02Sale48,000.0$42.84
Teekell Judson GrayDirector2026-06-02Sale3,000.0$42.78
Emmons LanceEVP and CFO2026-05-15Sale35,000.0$56.36
Gallagher Thomas P.Chairman & CEO2026-05-05Sale15,771.0$47.92
Comly Barbara J.EVP, GC & Corporate Secretary2026-05-04Sale28,000.0$47.26
Eckert Kurt M.Director2026-05-04Sale5,625.0$47.29
Brown ShellyEVP, Chief Strategy Officer2026-05-04Sale16,000.0$47.28
Schafer Douglas M. JREVP and CIO2026-05-04Sale48,000.0$47.25
Teekell Judson GrayDirector2026-05-04Sale3,000.0$47.3
Gallagher Thomas P.Chairman & CEO2026-05-04Sale54,229.0$47.26
Deitzel EdwardEVP, CRO, CCO MIAX Exchanges2026-05-04Sale11,000.0$47.28
Gallagher Thomas P.Chairman & CEO2026-04-15Sale49,900.0$43.68
Gallagher Thomas P.Chairman & CEO2026-04-15Sale104,124.0$43.36
Gallagher Thomas P.Chairman & CEO2026-04-15Sale70,001.0$43.36
Comly Barbara J.EVP, GC & Corporate Secretary2026-04-15Sale29,667.0$43.64
Deitzel EdwardEVP, CRO, CCO MIAX Exchanges2026-04-08Sale7,572.0$42.02
Brown ShellyEVP, Chief Strategy Officer2026-04-08Sale16,434.0$42.08
Deitzel EdwardEVP, CRO, CCO MIAX Exchanges2026-04-07Sale4,001.0$42.0
Deitzel EdwardEVP, CRO, CCO MIAX Exchanges2026-04-07Sale762.0$42.0
Brown ShellyEVP, Chief Strategy Officer2026-04-07Sale900.0$42.0
Brown ShellyEVP, Chief Strategy Officer2026-04-07Sale900.0$42.0
Brown ShellyEVP, Chief Strategy Officer2026-04-06Sale2,357.0$41.33
Brown ShellyEVP, Chief Strategy Officer2026-04-06Sale2,357.0$41.33
Teekell Judson GrayDirector2026-04-02Sale2,700.0$40.0
Teekell Judson GrayDirector2026-03-25Sale300.0$40.0
Brown ShellyEVP, Chief Strategy Officer2026-03-23Sale25,932.0$39.33
Eckert Kurt M.Director2026-03-19Sale37,917.0$39.0
Schafer Douglas M. JREVP and CIO2026-03-17Sale48,000.0$39.74
HORIZON KINETICS ASSET MANAGEMENT LLCReporting insider2026-03-05Purchase7,200.0$43.08
STAHL MURRAYDirector,TenPercentOwner2026-03-05Purchase7,200.0$43.08
HORIZON KINETICS ASSET MANAGEMENT LLCReporting insider2026-03-04Purchase7,200.0$43.38
STAHL MURRAYDirector,TenPercentOwner2026-03-04Purchase7,200.0$43.38
HORIZON KINETICS ASSET MANAGEMENT LLCReporting insider2026-03-04Purchase7,200.0$43.38
STAHL MURRAYDirector,TenPercentOwner2026-03-04Purchase7,200.0$43.38
HORIZON KINETICS ASSET MANAGEMENT LLCReporting insider2026-03-02Sale53,578.0$40.92
STAHL MURRAYDirector,TenPercentOwner2026-03-02Sale53,578.0$40.92
HORIZON KINETICS ASSET MANAGEMENT LLCReporting insider2026-03-02Sale121,054.0$40.92
STAHL MURRAYDirector,TenPercentOwner2026-03-02Sale121,054.0$40.92
HORIZON KINETICS ASSET MANAGEMENT LLCReporting insider2025-12-12Purchase2,439.0$41.0
STAHL MURRAYDirector,TenPercentOwner2025-12-12Purchase2,439.0$41.0
HORIZON KINETICS ASSET MANAGEMENT LLCReporting insider2025-10-03Purchase2.0$41.97
STAHL MURRAYDirector,TenPercentOwner2025-10-03Purchase2.0$41.97
HORIZON KINETICS ASSET MANAGEMENT LLCReporting insider2025-09-26Purchase4.0$41.76
STAHL MURRAYDirector,TenPercentOwner2025-09-26Purchase4.0$41.76
HORIZON KINETICS ASSET MANAGEMENT LLCReporting insider2025-08-28Purchase34,470.0$36.1
STAHL MURRAYDirector,TenPercentOwner2025-08-28Purchase34,470.0$36.1
Emmons LanceEVP and CFO2025-08-14Purchase4.0$31.44
Moore LisaDirector2025-08-13Purchase5,500.0$23.0
Jayabalan HarishEVP, CISO and CRO2025-08-13Purchase2,500.0$23.0
Stahlin PaulDirector2025-08-13Purchase1,000.0$23.0
Nazarali JamilDirector2025-08-13Purchase2,500.0$23.0
Smollen JohnEVP Traded Products & Relation2025-08-13Purchase5,000.0$23.0
Deitzel EdwardEVP, CRO, CCO MIAX Exchanges2025-08-13Purchase100.0$23.0
Gallagher Thomas P.Chairman & CEO2025-08-13Purchase12,000.0$23.0
Lozier Kenneth W.Director2025-08-13Purchase1,000.0$23.0
Massad Mark I.Director2025-08-13Purchase500.0$23.0
Massad Mark I.Director2025-08-13Purchase1,500.0$23.0
Massad Mark I.Director2025-08-13Purchase2,500.0$23.0
Massad Mark I.Director2025-08-13Purchase3,500.0$23.0