InsiderFlow

MIAX

Miami International Holdings, Inc. $39.45-2.33 (-5.57%)
Prev Close$41.77·MCap$4.10B·P/E23.07·Vol911.7K·Yield

Buys (12M)

4

$1.65M

Sells (12M)

59

$76.77M

Net Activity

Net Seller

$75.11M

Active Insiders

12

last 12 mo

Over the past 12 months, insider activity at Miami International Holdings, Inc. (MIAX) has been dominated by selling, with 4 insider purchases totaling $1.65M and 59 insider sales totaling $76.77M. The most recent insider transaction was by Deitzel Edward (officer: EVP, CRO, CCO MIAX Exchanges), who sold $464.3K worth of shares on Sep 4, 2026. Miami International Holdings, Inc. operates in the Financial Services sector, within the Financial - Capital Markets industry, with a market cap of $4.10B.

MIAX Insider Trading Activity

DateInsiderTypeValue
Sep 4, 2026 Deitzel EdwardSell$464.3K
Sep 4, 2026 Teekell Judson GraySell$353.2K
Sep 4, 2026 Comly Barbara J.Sell$1.80M
Sep 4, 2026 Schafer Douglas M. JRSell$1.94M
Sep 4, 2026 Gallagher Thomas P.Sell$1.99M
Aug 20, 2026 Gallagher Thomas P.Sell$6.16M
Aug 19, 2026 Emmons LanceSell$1.50M
Aug 19, 2026 Schwarzkopf CynthiaSell$214.3K
Aug 6, 2026 Teekell Judson GraySell$137.4K
Aug 6, 2026 Schafer Douglas M. JRSell$2.19M
Aug 6, 2026 Eckert Kurt M.Sell$48.7K
Aug 6, 2026 Gallagher Thomas P.Sell$2.21M
Aug 6, 2026 Comly Barbara J.Sell$2.03M
Aug 6, 2026 Deitzel EdwardSell$503.6K
Aug 6, 2026 Jayabalan HarishSell$918.0K
Jul 16, 2026 Schwarzkopf CynthiaSell$210.0K
Jul 14, 2026 Gallagher Thomas P.Sell$2.98M
Jul 14, 2026 Comly Barbara J.Sell$1.18M
Jul 7, 2026 Comly Barbara J.Sell$1.15M
Jul 7, 2026 Schafer Douglas M. JRSell$1.98M
Jul 7, 2026 Brown ShellySell$674.1K
Jul 7, 2026 Gallagher Thomas P.Sell$2.95M
Jul 7, 2026 Deitzel EdwardSell$462.4K
Jul 7, 2026 Jayabalan HarishSell$842.4K
Jul 7, 2026 Eckert Kurt M.Sell$206.6K
Jul 7, 2026 Teekell Judson GraySell$120.0K
Jun 17, 2026 Brown ShellySell$208.5K
Jun 12, 2026 Schwarzkopf CynthiaSell$813.7K
Jun 10, 2026 Jayabalan HarishSell$801.6K
Jun 4, 2026 Eckert Kurt M.Sell$224.5K
Jun 4, 2026 Deitzel EdwardSell$463.8K
Jun 4, 2026 Brown ShellySell$673.9K
Jun 4, 2026 Comly Barbara J.Sell$1.20M
Jun 4, 2026 Gallagher Thomas P.Sell$2.97M
Jun 4, 2026 Teekell Judson GraySell$128.3K
Jun 4, 2026 Schafer Douglas M. JRSell$2.06M
May 18, 2026 Emmons LanceSell$1.97M
May 7, 2026 Gallagher Thomas P.Sell$755.7K
May 5, 2026 Brown ShellySell$756.5K
May 5, 2026 Teekell Judson GraySell$141.9K
May 5, 2026 Comly Barbara J.Sell$1.32M
May 5, 2026 Schafer Douglas M. JRSell$2.27M
May 5, 2026 Eckert Kurt M.Sell$266.0K
May 5, 2026 Gallagher Thomas P.Sell$2.56M
May 5, 2026 Deitzel EdwardSell$520.1K
Apr 17, 2026 Gallagher Thomas P.Sell$9.73M
Apr 17, 2026 Comly Barbara J.Sell$1.29M
Apr 9, 2026 Brown ShellySell$691.5K
Apr 9, 2026 Deitzel EdwardSell$486.2K
Apr 8, 2026 Brown ShellySell$135.2K
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MIAX Insider Buying Activity

The following table shows recent insider purchases of Miami International Holdings, Inc. (MIAX) stock reported via SEC Form 4 filings.

No insider buying activity found for MIAX in the last 12 months.

MIAX Insider Selling Activity

The following table shows recent insider sales of Miami International Holdings, Inc. (MIAX) stock reported via SEC Form 4 filings.

DateInsiderTypeValue
Sep 4, 2026 Deitzel EdwardSell$464.3K
Sep 4, 2026 Teekell Judson GraySell$353.2K
Sep 4, 2026 Comly Barbara J.Sell$1.80M
Sep 4, 2026 Schafer Douglas M. JRSell$1.94M
Sep 4, 2026 Gallagher Thomas P.Sell$1.99M
Aug 20, 2026 Gallagher Thomas P.Sell$6.16M
Aug 19, 2026 Emmons LanceSell$1.50M
Aug 19, 2026 Schwarzkopf CynthiaSell$214.3K
Aug 6, 2026 Teekell Judson GraySell$137.4K
Aug 6, 2026 Schafer Douglas M. JRSell$2.19M
Aug 6, 2026 Eckert Kurt M.Sell$48.7K
Aug 6, 2026 Gallagher Thomas P.Sell$2.21M
Aug 6, 2026 Comly Barbara J.Sell$2.03M
Aug 6, 2026 Deitzel EdwardSell$503.6K
Aug 6, 2026 Jayabalan HarishSell$918.0K
Jul 16, 2026 Schwarzkopf CynthiaSell$210.0K
Jul 14, 2026 Gallagher Thomas P.Sell$2.98M
Jul 14, 2026 Comly Barbara J.Sell$1.18M
Jul 7, 2026 Comly Barbara J.Sell$1.15M
Jul 7, 2026 Schafer Douglas M. JRSell$1.98M
Jul 7, 2026 Brown ShellySell$674.1K
Jul 7, 2026 Gallagher Thomas P.Sell$2.95M
Jul 7, 2026 Deitzel EdwardSell$462.4K
Jul 7, 2026 Jayabalan HarishSell$842.4K
Jul 7, 2026 Eckert Kurt M.Sell$206.6K
Jul 7, 2026 Teekell Judson GraySell$120.0K
Jun 17, 2026 Brown ShellySell$208.5K
Jun 12, 2026 Schwarzkopf CynthiaSell$813.7K
Jun 10, 2026 Jayabalan HarishSell$801.6K
Jun 4, 2026 Eckert Kurt M.Sell$224.5K
Jun 4, 2026 Deitzel EdwardSell$463.8K
Jun 4, 2026 Brown ShellySell$673.9K
Jun 4, 2026 Comly Barbara J.Sell$1.20M
Jun 4, 2026 Gallagher Thomas P.Sell$2.97M
Jun 4, 2026 Teekell Judson GraySell$128.3K
Jun 4, 2026 Schafer Douglas M. JRSell$2.06M
May 18, 2026 Emmons LanceSell$1.97M
May 7, 2026 Gallagher Thomas P.Sell$755.7K
May 5, 2026 Brown ShellySell$756.5K
May 5, 2026 Teekell Judson GraySell$141.9K
May 5, 2026 Comly Barbara J.Sell$1.32M
May 5, 2026 Schafer Douglas M. JRSell$2.27M
May 5, 2026 Eckert Kurt M.Sell$266.0K
May 5, 2026 Gallagher Thomas P.Sell$2.56M
May 5, 2026 Deitzel EdwardSell$520.1K
Apr 17, 2026 Gallagher Thomas P.Sell$9.73M
Apr 17, 2026 Comly Barbara J.Sell$1.29M
Apr 9, 2026 Brown ShellySell$691.5K
Apr 9, 2026 Deitzel EdwardSell$486.2K
Apr 8, 2026 Brown ShellySell$135.2K

MIAX Insiders

Schafer Douglas M. JR

officer: EVP and CIO

Sold $13.68M
7 tradesLast: Sep 4, 2026
Teekell Judson Gray

director

Sold $1.00M
7 tradesLast: Sep 4, 2026
Comly Barbara J.

officer: EVP, GC & Corporate Secretary

Sold $9.98M
7 tradesLast: Sep 4, 2026
Deitzel Edward

officer: EVP, CRO, CCO MIAX Exchanges

Bought $2.3KSold $3.15M
8 tradesLast: Sep 4, 2026
Gallagher Thomas P.

director, officer: Chairman & CEO

Bought $276.0KSold $32.30M
10 tradesLast: Sep 4, 2026
Emmons Lance

officer: EVP and CFO

Bought $125.76Sold $3.47M
3 tradesLast: Aug 19, 2026
Schwarzkopf Cynthia

director

Sold $1.24M
3 tradesLast: Aug 19, 2026
Jayabalan Harish

officer: EVP, CISO and CRO

Bought $57.5KSold $2.56M
4 tradesLast: Aug 6, 2026
Eckert Kurt M.

director

Sold $2.22M
5 tradesLast: Aug 6, 2026
Brown Shelly

officer: EVP, Chief Strategy Officer

Sold $4.97M
8 tradesLast: Jul 7, 2026
STAHL MURRAY

Director

Bought $1.65MSold $2.19M
5 tradesLast: Mar 6, 2026
Moore Lisa

Director

Bought $126.5K
1 tradesLast: Aug 15, 2025
Smollen John

EVP Traded Products & Relation

Bought $115.0K
1 tradesLast: Aug 15, 2025
Nazarali Jamil

Director

Bought $57.5K
1 tradesLast: Aug 15, 2025
Massad Mark I.

Director

Bought $126.5K
1 tradesLast: Aug 15, 2025
Stahlin Paul

Director

Bought $23.0K
1 tradesLast: Aug 15, 2025