MIAX

NYSE

MIAMI INTERNATIONAL HOLDINGS, INC.

Latest disclosureOctober 6, 2026

Insider score Why 0?: 0/ 100
Qualifying buys · 30d: $0

0 purchases · 64 sales

Price by TradingView

Insider transactions 274

Limited filing history

Filters

Last 30 daysNo qualifying insider buying. Sales: $2.15M by 2 insiders.

Showing the first 6 of 64 trades on this page.

Sale disclosed

Douglas M. Schafer JR

EVP and CIO

Common Stock

Reported value: $1.33M
Reported price: $33.34 / share

Sale disclosed

Shelly Brown

EVP, Chief Strategy Officer

Common Stock

Reported value: $819.19K
Reported price: $38.61 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $1.99M
Reported price: $42.43 / share

Sale disclosed

Barbara J. Comly

EVP, GC & Corporate Secretary

Common Stock

Reported value: $1.8M
Reported price: $40.49 / share

Sale disclosed

Edward Deitzel

EVP, CRO, CCO MIAX Exchanges

Common Stock

Reported value: $464.31K
Reported price: $42.21 / share

Sale disclosed

Douglas M. Schafer JR

EVP and CIO

Common Stock

Reported value: $1.94M
Reported price: $40.48 / share

Sale disclosed

Judson Gray Teekell

Director

Common Stock

Reported value: $230.56K
Reported price: $41.58 / share

Sale disclosed

Judson Gray Teekell

Director

Common Stock

Reported value: $122.67K
Reported price: $40.89 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $6.16M
Reported price: $41.13 / share

Sale disclosed

Cynthia Schwarzkopf

Director

Common Stock

Reported value: $214.25K
Reported price: $42.85 / share

Sale disclosed

Lance Emmons

EVP and CFO

Common Stock

Reported value: $1.5M
Reported price: $42.83 / share

Sale disclosed

Kurt M. Eckert

Director

Common Stock

Reported value: $48.69K
Reported price: $45.80 / share

Sale disclosed

Judson Gray Teekell

Director

Common Stock

Reported value: $137.37K
Reported price: $45.79 / share

Sale disclosed

Harish Jayabalan

EVP, CISO and CRO

Common Stock

Reported value: $918K
Reported price: $45.90 / share

Sale disclosed

Barbara J. Comly

EVP, GC & Corporate Secretary

Common Stock

Reported value: $2.03M
Reported price: $45.69 / share

Sale disclosed

Edward Deitzel

EVP, CRO, CCO MIAX Exchanges

Common Stock

Reported value: $503.58K
Reported price: $45.78 / share

Sale disclosed

Douglas M. Schafer JR

EVP and CIO

Common Stock

Reported value: $2.19M
Reported price: $45.71 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $2.21M
Reported price: $45.69 / share

Sale disclosed

Cynthia Schwarzkopf

Director

Common Stock

Reported value: $210K
Reported price: $42.00 / share

Sale disclosed

Barbara J. Comly

EVP, GC & Corporate Secretary

Common Stock

Reported value: $1.18M
Reported price: $41.98 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $2.98M
Reported price: $42.52 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $1.76M
Reported price: $42.09 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $1.19M
Reported price: $42.27 / share

Sale disclosed

Harish Jayabalan

EVP, CISO and CRO

Common Stock

Reported value: $842.4K
Reported price: $42.12 / share

Sale disclosed

Edward Deitzel

EVP, CRO, CCO MIAX Exchanges

Common Stock

Reported value: $462.44K
Reported price: $42.04 / share

Sale disclosed

Shelly Brown

EVP, Chief Strategy Officer

Common Stock

Reported value: $674.08K
Reported price: $42.13 / share

Sale disclosed

Judson Gray Teekell

Director

Common Stock

Reported value: $120K
Reported price: $40.00 / share

Sale disclosed

Kurt M. Eckert

Director

Common Stock

Reported value: $206.59K
Reported price: $39.35 / share

Sale disclosed

Barbara J. Comly

EVP, GC & Corporate Secretary

Common Stock

Reported value: $1.15M
Reported price: $41.22 / share

Sale disclosed

Douglas M. Schafer JR

EVP and CIO

Common Stock

Reported value: $1.98M
Reported price: $41.22 / share

Sale disclosed

Shelly Brown

EVP, Chief Strategy Officer

Common Stock

Reported value: $208.5K
Reported price: $44.23 / share

Sale disclosed

Cynthia Schwarzkopf

Director

Common Stock

Reported value: $813.74K
Reported price: $41.73 / share

Sale disclosed

Harish Jayabalan

EVP, CISO and CRO

Common Stock

Reported value: $409.91K
Reported price: $40.12 / share

Sale disclosed

Harish Jayabalan

EVP, CISO and CRO

Common Stock

Reported value: $391.71K
Reported price: $40.04 / share

Sale disclosed

Judson Gray Teekell

Director

Common Stock

Reported value: $128.34K
Reported price: $42.78 / share

Sale disclosed

Kurt M. Eckert

Director

Common Stock

Reported value: $224.49K
Reported price: $42.76 / share

Sale disclosed

Barbara J. Comly

EVP, GC & Corporate Secretary

Common Stock

Reported value: $1.2M
Reported price: $42.85 / share

Sale disclosed

Edward Deitzel

EVP, CRO, CCO MIAX Exchanges

Common Stock

Reported value: $463.76K
Reported price: $42.16 / share

Sale disclosed

Douglas M. Schafer JR

EVP and CIO

Common Stock

Reported value: $2.06M
Reported price: $42.84 / share

Sale disclosed

Shelly Brown

EVP, Chief Strategy Officer

Common Stock

Reported value: $673.92K
Reported price: $42.12 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $2.97M
Reported price: $42.36 / share

Sale disclosed

Lance Emmons

EVP and CFO

Common Stock

Reported value: $1.97M
Reported price: $56.36 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $755.75K
Reported price: $47.92 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $2.56M
Reported price: $47.26 / share

Sale disclosed

Edward Deitzel

EVP, CRO, CCO MIAX Exchanges

Common Stock

Reported value: $520.08K
Reported price: $47.28 / share

Sale disclosed

Shelly Brown

EVP, Chief Strategy Officer

Common Stock

Reported value: $756.48K
Reported price: $47.28 / share

Sale disclosed

Judson Gray Teekell

Director

Common Stock

Reported value: $141.9K
Reported price: $47.30 / share

Sale disclosed

Douglas M. Schafer JR

EVP and CIO

Common Stock

Reported value: $2.27M
Reported price: $47.25 / share

Sale disclosed

Kurt M. Eckert

Director

Common Stock

Reported value: $266.01K
Reported price: $47.29 / share

Sale disclosed

Barbara J. Comly

EVP, GC & Corporate Secretary

Common Stock

Reported value: $1.32M
Reported price: $47.26 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $3.04M
Reported price: $43.36 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $4.51M
Reported price: $43.36 / share

Sale disclosed

Thomas P. Gallagher

Chairman & CEO

Common Stock

Reported value: $2.18M
Reported price: $43.68 / share

Sale disclosed

Barbara J. Comly

EVP, GC & Corporate Secretary

Common Stock

Reported value: $1.29M
Reported price: $43.64 / share

Sale disclosed

Shelly Brown

EVP, Chief Strategy Officer

Common Stock

Reported value: $691.54K
Reported price: $42.08 / share

Sale disclosed

Edward Deitzel

EVP, CRO, CCO MIAX Exchanges

Common Stock

Reported value: $32K
Reported price: $42.00 / share

Sale disclosed

Edward Deitzel

EVP, CRO, CCO MIAX Exchanges

Common Stock

Reported value: $168.04K
Reported price: $42.00 / share

Sale disclosed

Edward Deitzel

EVP, CRO, CCO MIAX Exchanges

Common Stock

Reported value: $318.18K
Reported price: $42.02 / share

Sale disclosedAmended filing

Shelly Brown

EVP, Chief Strategy Officer

Amended

Related filings are retained as evidence. This economic transaction is counted once.

This amendment supersedes the related original transaction.

Original SEC filing ↗Amended SEC filing ↗

Common Stock

Reported value: $97.41K
Reported price: $41.33 / share

Sale disclosedAmended filing

Shelly Brown

EVP, Chief Strategy Officer

Amended

Related filings are retained as evidence. This economic transaction is counted once.

This amendment supersedes the related original transaction.

Original SEC filing ↗Amended SEC filing ↗

Common Stock

Reported value: $37.8K
Reported price: $42.00 / share

Sale disclosed

Shelly Brown

EVP, Chief Strategy Officer

Superseded by later filing

Related filings are retained as evidence. This economic transaction is counted once.

This original record remains available as evidence. The later filing replaces it in totals and buying signals.

Superseding SEC filing ↗Original transaction filing ↗

Common Stock

Reported value: Unavailable
Reported price: $41.33 / share

Sale disclosed

Shelly Brown

EVP, Chief Strategy Officer

Superseded by later filing

Related filings are retained as evidence. This economic transaction is counted once.

This original record remains available as evidence. The later filing replaces it in totals and buying signals.

Superseding SEC filing ↗Original transaction filing ↗

Common Stock

Reported value: Unavailable
Reported price: $42.00 / share

Sale disclosed

Judson Gray Teekell

Director

Common Stock

Reported value: $108K
Reported price: $40.00 / share

Sale disclosed

Judson Gray Teekell

Director

Common Stock

Reported value: $12K
Reported price: $40.00 / share

Reporting insider	Security / transaction	Amount / price	Value	Traded / disclosed	Source
EVP and CIO	Common StockSale10b5-1	40,000$33.34 / share	$1.33M	Oct 2Filed Oct 6 · 4d later	SEC filing
EVP, Chief Strategy Officer	Common StockSale10b5-1	21,217$38.61 / share	$819.19K	Sep 16Filed Sep 17 · 1d later	SEC filing
Chairman & CEO	Common StockSale10b5-1	47,000$42.43 / share	$1.99M	Sep 3Filed Sep 4 · 1d later	SEC filing
EVP, GC & Corporate Secretary	Common StockSale10b5-1	44,445$40.49 / share	$1.8M	Sep 2Filed Sep 4 · 2d later	SEC filing
EVP, CRO, CCO MIAX Exchanges	Common StockSale10b5-1	11,000$42.21 / share	$464.31K	Sep 3Filed Sep 4 · 1d later	SEC filing
EVP and CIO	Common StockSale10b5-1	48,000$40.48 / share	$1.94M	Sep 2Filed Sep 4 · 2d later	SEC filing
Director	Common StockSale10b5-12 trades	8,545avg $41.34 / share	$353.23K	Sep 2Filed Sep 4 · 2d later	2 filings 5,545 @ $41.58 · $230.56KSEC filing 3,000 @ $40.89 · $122.67KSEC filing
Chairman & CEO	Common StockSale10b5-1	149,700$41.13 / share	$6.16M	Aug 19Filed Aug 20 · 1d later	SEC filing
Director	Common StockSale10b5-1	5,000$42.85 / share	$214.25K	Aug 17Filed Aug 19 · 2d later	SEC filing
EVP and CFO	Common StockSale10b5-1	35,000$42.83 / share	$1.5M	Aug 17Filed Aug 19 · 2d later	SEC filing
Director	Common StockSale10b5-1	1,063$45.80 / share	$48.69K	Aug 4Filed Aug 6 · 2d later	SEC filing
Director	Common StockSale10b5-1	3,000$45.79 / share	$137.37K	Aug 4Filed Aug 6 · 2d later	SEC filing
EVP, CISO and CRO	Common StockSale10b5-1	20,000$45.90 / share	$918K	Aug 4Filed Aug 6 · 2d later	SEC filing
EVP, GC & Corporate Secretary	Common StockSale10b5-1	44,445$45.69 / share	$2.03M	Aug 4Filed Aug 6 · 2d later	SEC filing
EVP, CRO, CCO MIAX Exchanges	Common StockSale10b5-1	11,000$45.78 / share	$503.58K	Aug 4Filed Aug 6 · 2d later	SEC filing
EVP and CIO	Common StockSale10b5-1	48,000$45.71 / share	$2.19M	Aug 4Filed Aug 6 · 2d later	SEC filing
Chairman & CEO	Common StockSale10b5-1	48,334$45.69 / share	$2.21M	Aug 4Filed Aug 6 · 2d later	SEC filing
Director	Common StockSale10b5-1	5,000$42.00 / share	$210K	Jul 15Filed Jul 16 · 1d later	SEC filing
EVP, GC & Corporate Secretary	Common StockSale10b5-1	28,000$41.98 / share	$1.18M	Jul 13Filed Jul 14 · 1d later	SEC filing
Chairman & CEO	Common StockSale10b5-1	70,000$42.52 / share	$2.98M	Jul 13Filed Jul 14 · 1d later	SEC filing
Chairman & CEO	Common StockSale10b5-1	41,772$42.09 / share	$1.76M	Jul 6Filed Jul 7 · 1d later	SEC filing
Chairman & CEO	Common StockSale10b5-1	28,228$42.27 / share	$1.19M	Jul 7Filed Jul 7 · 0d later	SEC filing
EVP, CISO and CRO	Common StockSale10b5-1	20,000$42.12 / share	$842.4K	Jul 6Filed Jul 7 · 1d later	SEC filing
EVP, CRO, CCO MIAX Exchanges	Common StockSale10b5-1	11,000$42.04 / share	$462.44K	Jul 6Filed Jul 7 · 1d later	SEC filing
EVP, Chief Strategy Officer	Common StockSale10b5-1	16,000$42.13 / share	$674.08K	Jul 6Filed Jul 7 · 1d later	SEC filing
Director	Common StockSale10b5-1	3,000$40.00 / share	$120K	Jul 2Filed Jul 7 · 5d later	SEC filing
Director	Common StockSale10b5-1	5,250$39.35 / share	$206.59K	Jul 2Filed Jul 7 · 5d later	SEC filing
EVP, GC & Corporate Secretary	Common StockSale10b5-1	28,000$41.22 / share	$1.15M	Jul 2Filed Jul 7 · 5d later	SEC filing
EVP and CIO	Common StockSale10b5-1	48,000$41.22 / share	$1.98M	Jul 2Filed Jul 7 · 5d later	SEC filing
EVP, Chief Strategy Officer	Common StockSale10b5-1	4,714$44.23 / share	$208.5K	Jun 15Filed Jun 17 · 2d later	SEC filing
Director	Common StockSale10b5-1	19,500$41.73 / share	$813.74K	Jun 11Filed Jun 12 · 1d later	SEC filing
EVP, CISO and CRO	Common StockSale10b5-1	10,217$40.12 / share	$409.91K	Jun 8Filed Jun 10 · 2d later	SEC filing
EVP, CISO and CRO	Common StockSale10b5-1	9,783$40.04 / share	$391.71K	Jun 9Filed Jun 10 · 1d later	SEC filing
Director	Common StockSale10b5-1	3,000$42.78 / share	$128.34K	Jun 2Filed Jun 4 · 2d later	SEC filing
Director	Common StockSale10b5-1	5,250$42.76 / share	$224.49K	Jun 2Filed Jun 4 · 2d later	SEC filing
EVP, GC & Corporate Secretary	Common StockSale10b5-1	28,000$42.85 / share	$1.2M	Jun 2Filed Jun 4 · 2d later	SEC filing
EVP, CRO, CCO MIAX Exchanges	Common StockSale10b5-1	11,000$42.16 / share	$463.76K	Jun 2Filed Jun 4 · 2d later	SEC filing
EVP and CIO	Common StockSale10b5-1	48,000$42.84 / share	$2.06M	Jun 2Filed Jun 4 · 2d later	SEC filing
EVP, Chief Strategy Officer	Common StockSale10b5-1	16,000$42.12 / share	$673.92K	Jun 2Filed Jun 4 · 2d later	SEC filing
Chairman & CEO	Common StockSale10b5-1	70,000$42.36 / share	$2.97M	Jun 2Filed Jun 4 · 2d later	SEC filing
EVP and CFO	Common StockSale10b5-1	35,000$56.36 / share	$1.97M	May 15Filed May 18 · 3d later	SEC filing
Chairman & CEO	Common StockSale10b5-1	15,771$47.92 / share	$755.75K	May 5Filed May 7 · 2d later	SEC filing
Chairman & CEO	Common StockSale10b5-1	54,229$47.26 / share	$2.56M	May 4Filed May 5 · 1d later	SEC filing
EVP, CRO, CCO MIAX Exchanges	Common StockSale10b5-1	11,000$47.28 / share	$520.08K	May 4Filed May 5 · 1d later	SEC filing
EVP, Chief Strategy Officer	Common StockSale10b5-1	16,000$47.28 / share	$756.48K	May 4Filed May 5 · 1d later	SEC filing
Director	Common StockSale10b5-1	3,000$47.30 / share	$141.9K	May 4Filed May 5 · 1d later	SEC filing
EVP and CIO	Common StockSale10b5-1	48,000$47.25 / share	$2.27M	May 4Filed May 5 · 1d later	SEC filing
Director	Common StockSale10b5-1	5,625$47.29 / share	$266.01K	May 4Filed May 5 · 1d later	SEC filing
EVP, GC & Corporate Secretary	Common StockSale10b5-1	28,000$47.26 / share	$1.32M	May 4Filed May 5 · 1d later	SEC filing
Chairman & CEO	Common StockSale10b5-13 trades	224,025avg $43.43 / share	$9.73M	Apr 15Filed Apr 17 · 2d later	3 filings 70,001 @ $43.36 · $3.04MSEC filing 104,124 @ $43.36 · $4.51MSEC filing 49,900 @ $43.68 · $2.18MSEC filing
EVP, GC & Corporate Secretary	Common StockSale10b5-1	29,667$43.64 / share	$1.29M	Apr 15Filed Apr 17 · 2d later	SEC filing
EVP, Chief Strategy Officer	Common StockSale10b5-1	16,434$42.08 / share	$691.54K	Apr 8Filed Apr 9 · 1d later	SEC filing
EVP, CRO, CCO MIAX Exchanges	Common StockSale10b5-12 trades	4,763avg $42.00 / share	$200.05K	Apr 7Filed Apr 9 · 2d later	2 filings 762 @ $42.00 · $32KSEC filing 4,001 @ $42.00 · $168.04KSEC filing
EVP, CRO, CCO MIAX Exchanges	Common StockSale10b5-1	7,572$42.02 / share	$318.18K	Apr 8Filed Apr 9 · 1d later	SEC filing
EVP, Chief Strategy Officer Amended Related filings are retained as evidence. This economic transaction is counted once. This amendment supersedes the related original transaction. Original SEC filing ↗Amended SEC filing ↗	Common StockSale10b5-1	2,357$41.33 / share	$97.41K	Apr 6Filed Apr 9 · 3d later	SEC filing
EVP, Chief Strategy Officer Amended Related filings are retained as evidence. This economic transaction is counted once. This amendment supersedes the related original transaction. Original SEC filing ↗Amended SEC filing ↗	Common StockSale10b5-1	900$42.00 / share	$37.8K	Apr 7Filed Apr 9 · 2d later	SEC filing
EVP, Chief Strategy Officer Superseded by later filing Related filings are retained as evidence. This economic transaction is counted once. This original record remains available as evidence. The later filing replaces it in totals and buying signals. Superseding SEC filing ↗Original transaction filing ↗	Common StockSale10b5-1	2,357$41.33 / share	Unavailable	Apr 6Filed Apr 8 · 2d later	SEC filing
EVP, Chief Strategy Officer Superseded by later filing Related filings are retained as evidence. This economic transaction is counted once. This original record remains available as evidence. The later filing replaces it in totals and buying signals. Superseding SEC filing ↗Original transaction filing ↗	Common StockSale10b5-1	900$42.00 / share	Unavailable	Apr 7Filed Apr 8 · 1d later	SEC filing
Director	Common StockSale10b5-1	2,700$40.00 / share	$108K	Apr 2Filed Apr 3 · 1d later	SEC filing
Director	Common StockSale10b5-1	300$40.00 / share	$12K	Mar 25Filed Mar 26 · 1d later	SEC filing

Congress transactions 1

All Congress filings

Purchase disclosed

Miami International Holdings, Inc. Common Stock (MIAX) · Stock

The filing reports a purchase for the member.

Gilbert CisnerosReporting House member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: March 20, 2026

Why this buying score?

No qualifying common-equity purchases

No eligible common-equity purchase is public by this cutoff within 180 transaction-date days. Other instruments, exercises and routine activity do not contribute purchase points.

+0 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Limited filing history · Market-wide discovery does not establish complete company history. View coverage

Source: SEC EDGAR · Form 4
Issuer CIK: 0001438472
Latest public acceptance: Oct 6, 2026, 09:28 PM UTC
Score calculated: Oct 8, 2026, 12:06 AM UTC
Parser: form4-parser-1.5
Classifier: form4-classifier-1.1
Scoring methodology: insider-experimental-1.1
Availability: Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.

Insider activity can have many explanations. Signal Strength is not a probability of profit or a recommendation to trade.

Reporting insider

Security / transaction

Amount / price

Value

Traded / disclosed

Source

EVP and CIO

Common StockSale10b5-1

40,000$33.34 / share

$1.33M

Oct 2Filed Oct 6 · 4d later