United States Investment Banking & Investment Services

Miami International Holdings Inc (MIAX)

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Over the last 90 days, Miami International Holdings Inc. has seen significant insider selling, with total sales exceeding purchases by over $75 million. Notably, several executives, including the Chairman & CEO and EVP & CFO, have engaged in large planned and proposed sales, totaling millions of dollars. This activity occurred shortly after the company's last earnings report, which exceeded expectations.

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Ticker: MIAX Exchange: NYS

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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Trades

Emmons Lance

EVP and CFO

1 sale — total 100,000 USD

Planned sale 15 May 2026

Value US$4,082,881.90 | Price 243.92 | Shares 58,924

Lance Emmons

Officer

1 sale — total 100,000 USD

Proposed sale 15 May 2026

Value US$576,801.71 | Price 224.38 | Shares 83,263

Gallagher Thomas P.

Chairman & CEO

1 sale — total 755,746 USD

Planned sale 5 May 2026

Value US$755,746.32 | Price 47.92 | Shares 15,771

Gallagher Thomas P.

Chairman & CEO

1 sale — total 2,562,863 USD

Planned sale 4 May 2026

Value US$2,562,862.54 | Price 47.26 | Shares 54,229

Deitzel Edward

EVP, CRO, CCO MIAX Exchanges

1 sale — total 520,080 USD

Planned sale 4 May 2026

Value US$520,080.00 | Price 47.28 | Shares 11,000

Brown Shelly

EVP, Chief Strategy Officer

1 sale — total 756,480 USD

Planned sale 4 May 2026

Value US$756,480.00 | Price 47.28 | Shares 16,000

Teekell Judson Gray

1 sale — total 141,900 USD

Planned sale 4 May 2026

Value US$141,900.00 | Price 47.30 | Shares 3,000

Schafer Douglas M. JR

EVP and CIO

1 sale — total 2,268,000 USD

Planned sale 4 May 2026

Value US$2,268,000.00 | Price 47.25 | Shares 48,000

Comly Barbara J.

EVP, GC & Corporate Secretary

1 sale — total 1,323,280 USD

Planned sale 4 May 2026

Value US$1,323,280.00 | Price 47.26 | Shares 28,000

Eckert Kurt M.

1 sale — total 266,006 USD

Planned sale 4 May 2026

Value US$266,006.25 | Price 47.29 | Shares 5,625

EDWARD DEITZEL

Officer

1 sale — total 1,556,610 USD

Proposed sale 4 May 2026

Value US$1,556,610.00 | Price 47.17 | Shares 33,000

J. GRAY TEEKELL

Director

1 sale — total 424,530 USD

Proposed sale 4 May 2026

Value US$424,530.00 | Price 47.17 | Shares 9,000

SHELLY BROWN

Officer

1 sale — total 1,509,440 USD

Proposed sale 4 May 2026

Value US$1,509,440.00 | Price 47.17 | Shares 32,000

Gallagher Thomas P.

Chairman & CEO

3 sales — total 9,729,692 USD

Planned sale 15 Apr 2026

Value US$2,179,632.00 | Price 43.68 | Shares 49,900

Planned sale 15 Apr 2026

Value US$4,514,816.64 | Price 43.36 | Shares 104,124

Planned sale 15 Apr 2026

Value US$3,035,243.36 | Price 43.36 | Shares 70,001

Comly Barbara J.

EVP, GC & Corporate Secretary

1 sale — total 1,294,668 USD

Planned sale 15 Apr 2026

Value US$1,294,667.88 | Price 43.64 | Shares 29,667

BARBARA J COMLY

Officer

1 sale — total 6,078,931 USD

Proposed sale 15 Apr 2026

Value US$6,078,930.97 | Price 42.91 | Shares 141,667

GALLAGHER INVESTMENTS LLC

Director; Officer

1 sale — total 19,486,504 USD

Proposed sale 15 Apr 2026

Value US$19,486,503.75 | Price 42.91 | Shares 454,125

THOMAS P GALLAGHER

Director; Officer

1 sale — total 2,141,209 USD

Proposed sale 15 Apr 2026

Value US$2,141,209.00 | Price 42.91 | Shares 49,900

Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	B/S Transaction type	Insider and/or position	Nb. shares Price Value	Number of shares	Price	Value
2026-05-18	2026-05-15	PlS Planned sale	3.3 Emmons Lance EVP and CFO Officer	58,924 +32.2% 243.92 US$4,082,882	58,924 +32.2%	243.92	US$4,082,882
2026-05-15	2026-05-15	PrS Proposed sale	3.3 Lance Emmons Officer Officer	83,263 224.38 US$576,802	83,263	224.38	US$576,802
2026-05-07	2026-05-05	PlS Planned sale	Gallagher Thomas P. Chairman & CEO Executive Director	72,085 +38.5% 10.56 US$1,742,595	72,085 +38.5%	10.56	US$1,742,595
2026-05-05	2026-05-04	PlS Planned sale	Gallagher Thomas P. Chairman & CEO Executive Director	54,229 -3.1% 47.26 US$2,562,863	54,229 -3.1%	47.26	US$2,562,863
2026-05-05	2026-05-04	PlS Planned sale	Deitzel Edward EVP, CRO, CCO MIAX Exchanges Officer	11,000 -8.6% 47.28 US$520,080	11,000 -8.6%	47.28	US$520,080
2026-05-05	2026-05-04	PlS Planned sale	Brown Shelly EVP, Chief Strategy Officer Officer	16,000 -4.7% 47.28 US$756,480	16,000 -4.7%	47.28	US$756,480
2026-05-05	2026-05-04	PlS Planned sale	Teekell Judson Gray Non-Executive Director	3,000 -5.1% 47.30 US$141,900	3,000 -5.1%	47.30	US$141,900
2026-05-05	2026-05-04	PlS Planned sale	Schafer Douglas M. JR EVP and CIO Officer	48,000 -10.8% 47.25 US$2,268,000	48,000 -10.8%	47.25	US$2,268,000
2026-05-05	2026-05-04	PlS Planned sale	Comly Barbara J. EVP, GC & Corporate Secretary Officer	28,000 -3.2% 47.26 US$1,323,280	28,000 -3.2%	47.26	US$1,323,280
2026-05-05	2026-05-04	PlS Planned sale	Eckert Kurt M. Non-Executive Director	5,625 -3.8% 47.29 US$266,006	5,625 -3.8%	47.29	US$266,006
2026-05-04	2026-05-04	PrS Proposed sale	EDWARD DEITZEL Officer Officer	33,000 47.17 US$1,556,610	33,000	47.17	US$1,556,610
2026-05-04	2026-05-04	PrS Proposed sale	J. GRAY TEEKELL Director Non-Executive Director	9,000 47.17 US$424,530	9,000	47.17	US$424,530
2026-05-04	2026-05-04	PrS Proposed sale	SHELLY BROWN Officer Officer	32,000 47.17 US$1,509,440	32,000	47.17	US$1,509,440
2026-04-17	2026-04-15	PlS Planned sale	Gallagher Thomas P. Chairman & CEO Executive Director	49,900 -9.3% 43.68 US$2,179,632	49,900 -9.3%	43.68	US$2,179,632
2026-04-17	2026-04-15	PlS Planned sale	Gallagher Thomas P. Chairman & CEO Executive Director	104,124 -5.7% 43.36 US$4,514,817	104,124 -5.7%	43.36	US$4,514,817
2026-04-17	2026-04-15	PlS Planned sale	Gallagher Thomas P. Chairman & CEO Executive Director	70,001 -3.7% 43.36 US$3,035,243	70,001 -3.7%	43.36	US$3,035,243
2026-04-17	2026-04-15	PlS Planned sale	Comly Barbara J. EVP, GC & Corporate Secretary Officer	29,667 -3.4% 43.64 US$1,294,668	29,667 -3.4%	43.64	US$1,294,668
2026-04-15	2026-04-15	PrS Proposed sale	BARBARA J COMLY Officer Officer	141,667 42.91 US$6,078,931	141,667	42.91	US$6,078,931
2026-04-15	2026-04-15	PrS Proposed sale	GALLAGHER INVESTMENTS LLC Director; Officer Executive Director	454,125 42.91 US$19,486,504	454,125	42.91	US$19,486,504
2026-04-15	2026-04-15	PrS Proposed sale	THOMAS P GALLAGHER Director; Officer Executive Director	49,900 42.91 US$2,141,209	49,900	42.91	US$2,141,209