StockCIK 1438472
MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX): Insider Trades and Fund Holdings
In the past 12 months, MIAMI INTERNATIONAL HOLDINGS, INC. insiders reported 0 open-market purchases worth $0 and 13 sales worth $17.3M; 13 of the sales were reported as made under a 10b5-1 trading plan.
0Insider buys, 12 months
$0Bought by insiders, 12 months
$17.3MSold by insiders, 12 months
0Tracked funds holding
Recent insider trades
Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Oct 26, 2026.
| Filed | Insider | Type | Value |
|---|---|---|---|
| Oct 26 | Barbara J. ComlyEVP | ▼ SELL10b5-1 | $431K |
| Oct 26 | Douglas M. Schafer JrEVP | ▼ SELL10b5-1 | $280K |
| Oct 6 | Douglas M. Schafer JrEVP | ▼ SELL10b5-1 | $1.33M |
| Sep 17 | Shelly BrownEVP | ▼ SELL10b5-1 | $819K |
| Sep 4 | Thomas P. GallagherCEO | ▼ SELL10b5-1 | $1.99M |
| Sep 4 | Douglas M. Schafer JrEVP | ▼ SELL10b5-1 | $1.94M |
| Sep 4 | Barbara J. ComlyEVP | ▼ SELL10b5-1 | $1.80M |
| Sep 4 | Edward DeitzelEVP | ▼ SELL10b5-1 | $464K |
| Sep 4 | Judson Gray TeekellDirector | ▼ SELL10b5-1 | $231K |
| Sep 4 | Judson Gray TeekellDirector | ▼ SELL10b5-1 | $123K |
Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings
All 13 MIAX insider trades →Insiders who traded in the past year
| Insider | Role | Buys | Bought | Sells | Sold |
|---|---|---|---|---|---|
| Barbara J. Comly | EVP | 0 | $0 | 2 | $2.23M |
| Douglas M. Schafer Jr | EVP | 0 | $0 | 3 | $3.56M |
| Shelly Brown | EVP | 0 | $0 | 1 | $819K |
| Thomas P. Gallagher | CEO | 0 | $0 | 2 | $8.15M |
| Edward Deitzel | EVP | 0 | $0 | 1 | $464K |
| Judson Gray Teekell | Director | 0 | $0 | 2 | $353K |
| Lance Emmons | CFO | 0 | $0 | 1 | $1.50M |
| Cynthia Schwarzkopf | Director | 0 | $0 | 1 | $214K |
Tracked funds that report MIAX
From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.
| Fund | Shares | Value | Change |
|---|---|---|---|
| Soros Fund Management | 0 | $0 | ▼ Sold out |
| Renaissance Technologies | 0 | $0 | ▼ Sold out |
Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings
Reading these numbers
Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →