Miami International Holdings MIAX Insider Ownership

NYSE MIAX
$44.04 +1.45 (+3.40%)
As of: Aug 24, 2026 · 3:59 PM EDT

Insider Holdings by Owner

7.87Mn Shares

Insider Ownership Statistics

as of 30 Jun, 2026
Insider Ownership
10.85%
▲+0.0090% pp QoQ
Shares Held by Insiders
7.61Mn
filed for Jun 2026
▲+0.08% QoQ
Shares Outstanding
70.13Mn
70,128,197 shares
Direct Holdings
2.17Mn
Indirect: 5.44Mn
Net Shares Traded (QoQ)
+6.31K
net buying in Jun 2026
Insiders Holding Shares
19
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

Quarter ending 30 Jun, 2026

Miami International Holdings's top three insider shareholders as of August 04, 2026 are Talal Jassim Al-Bahar (Director, 3.62Mn shares), Thomas P. Gallagher (Chairman Ceo, 1.83Mn shares), Barbara J. Comly (Evp, Gc Corporate Secretary, 843.84K shares).

Form 4 Holdings

Insiders Holding MIAX

Insiders 19
Shares held 7.87Mn
Of outstanding 11.22%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Talal Jassim Al-Bahar Director 0 3,617,296 3,617,296 46.0% 19 Aug, 2025
2 Thomas P. Gallagher Chairman Ceo 0 1,827,399 1,827,399 23.2% 01 Apr, 2026
3 Barbara J. Comly Evp, Gc Corporate Secretary 843,844 0 843,844 10.7% 01 Apr, 2026
4 Douglas M. Jr Schafer Evp And Cio 396,681 0 396,681 5.0% 18 Mar, 2026
5 Shelly Brown Evp, Chief Strategy Officer 325,047 0 325,047 4.1% 09 Apr, 2026
6 John Smollen Evp, New Product Development 170,757 0 170,757 2.2% 01 Apr, 2026
7 Kurt M. Eckert Director 142,375 0 142,375 1.8% 20 Mar, 2026
8 Lance Emmons Evp And Cfo 119,262 0 119,262 1.5% 01 Apr, 2026
9 Edward Deitzel Evp, Cro, Cco Miax Exchanges 116,221 0 116,221 1.5% 01 Apr, 2026
10 Cynthia Schwarzkopf Director 81,308 0 81,308 1.0% 19 Aug, 2025
11 Harish Jayabalan Evp, Ciso And Cro 73,405 0 73,405 0.9% 11 Sep, 2025
12 Judson Gray Teekell Director 59,338 0 59,338 0.8% 03 Apr, 2026
13 Mark F. Raymond Director 43,827 0 43,827 0.6% 19 Aug, 2025
14 Paul Stahlin Director 25,083 0 25,083 0.3% 19 Aug, 2025
15 John Beckelman Director 8,667 0 8,667 0.1% 10 Apr, 2026
16 Mark I. Massad Director 3,500 3,000 6,500 0.1% 15 Aug, 2025
17 Lisa Moore Director 5,500 0 5,500 0.1% 15 Aug, 2025
18 Jamil Nazarali Director 2,500 0 2,500 0.0% 15 Aug, 2025
19 Kenneth W. Lozier Director 1,000 0 1,000 0.0% 15 Aug, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,054 Insider Transactions

Source SEC Form 4
Latest quarter Jun 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
09 Apr, 2026 John Beckelman Director Acquired M 8,667 $12.00 $104.00K 8,667 Direct
09 Apr, 2026 John Beckelman Director Disposed M 8,667 $0.00 $0 0 Direct
06 Apr, 2026 Shelly Brown Evp, Chief Strategy Officer Disposed S 2,357 $41.33 $97.41K 325,047 Direct
07 Apr, 2026 Shelly Brown Evp, Chief Strategy Officer Acquired M 900 $12.00 $10.80K 325,947 Direct
07 Apr, 2026 Shelly Brown Evp, Chief Strategy Officer Disposed S 900 $42.00 $37.80K 325,047 Direct
07 Apr, 2026 Shelly Brown Evp, Chief Strategy Officer Disposed M 900 $0.00 $0 64,434 Direct
06 Apr, 2026 Shelly Brown Evp, Chief Strategy Officer Disposed S 2,357 $41.33 $97.41K 325,047 Direct
07 Apr, 2026 Shelly Brown Evp, Chief Strategy Officer Disposed S 900 $42.00 $37.80K 324,147 Direct
02 Apr, 2026 Judson Gray Teekell Director Disposed S 2,700 $40.00 $108.00K 59,338 Direct
02 Apr, 2026 Judson Gray Teekell Director Disposed S 2,700 $40.00 $108.00K 59,338 Direct
02 Apr, 2026 Judson Gray Teekell Director Disposed S 2,700 $40.00 $108.00K 59,338 Direct
02 Apr, 2026 Judson Gray Teekell Director Disposed S 2,700 $40.00 $108.00K 59,338 Direct
02 Apr, 2026 Judson Gray Teekell Director Disposed S 2,700 $40.00 $108.00K 59,338 Direct
02 Apr, 2026 Judson Gray Teekell Director Disposed S 2,700 $40.00 $108.00K 59,338 Direct
30 Mar, 2026 John Smollen Evp, New Product Development Disposed F 362 $37.50 $13.58K 170,757 Direct
30 Mar, 2026 John Smollen Evp, New Product Development Disposed F 362 $37.50 $13.58K 170,757 Direct
30 Mar, 2026 John Smollen Evp, New Product Development Disposed F 362 $37.50 $13.58K 170,757 Direct
30 Mar, 2026 John Smollen Evp, New Product Development Disposed F 362 $37.50 $13.58K 170,757 Direct
30 Mar, 2026 John Smollen Evp, New Product Development Disposed F 362 $37.50 $13.58K 170,757 Direct
30 Mar, 2026 John Smollen Evp, New Product Development Disposed F 362 $37.50 $13.58K 170,757 Direct