CIK 0001438472 · Non-accelerated filer
MIAMI INTERNATIONAL HOLDINGS, INC.
Sign in to watch- Ticker
- MIAX
- Exchange
- NYSE
- Industry
- Security Brokers, Dealers & Flotation Companies
- Incorporated
- DE
- Entity type
- operating
- EIN
- 261482385
- Phone
- 609-897-7300
- Business address
- 7 ROSZEL ROAD, FIFTH FLOOR, SUITE 1-A, PRINCETON, NJ, 08540
- Former names
- MIAMI INTERNATIONAL HOLDINGS INC
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $21,715,991
- in 14 filings, $21.7M under 10b5-1 plans
Net −$21,715,991. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
- Gallagher Thomas P. −$8.2M Chairman & CEO sold 12% of stake
- Schafer Douglas M. JR −$5.2M EVP and CIO sold 27% of stake
- Comly Barbara J. −$5.0M EVP, GC & Corporate Secretary sold 14% of stake
- Emmons Lance −$1.5M EVP and CFO sold 29% of stake
- Brown Shelly −$819K EVP, Chief Strategy Officer sold 6% of stake
Reading 55 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-08-04 | Teekell Judson Gray Director | Sale 10b5-1 | −3,000 | $45.79 | $137K | 72,251 |
| 2026-07-15 | Schwarzkopf Cynthia Director | Option exercise 10b5-1 | +5,000 | $12.00 | $60K | 93,545 |
| 2026-07-15 | Schwarzkopf Cynthia Director | Sale 10b5-1 | −5,000 | $42.00 | $210K | 88,545 |
| 2026-07-15 | Schwarzkopf Cynthia Director | Option exercise · Stock Option (Right to Buy) 10b5-1 | −5,000 | 16,916 | ||
| 2026-07-13 | Comly Barbara J. EVP, GC & Corporate Secretary | Option exercise 10b5-1 | +28,000 | $12.00 | $336K | 910,984 |
| 2026-07-13 | Comly Barbara J. EVP, GC & Corporate Secretary | Sale 10b5-1 | −28,000 | $41.98 | $1.2M | 882,984 |
| 2026-07-13 | Comly Barbara J. EVP, GC & Corporate Secretary | Option exercise · Nonqualified Stock Option (Right to Buy) 10b5-1 | −28,000 | 0 | ||
| 2026-07-13 | Gallagher Thomas P. Chairman & CEO | Option exercise 10b5-1 | +70,000 | $12.00 | $840K | 1,793,275 |
| 2026-07-13 | Gallagher Thomas P. Chairman & CEO | Sale 10b5-1 | −70,000 | $42.52 | $3.0M | 1,723,275 |
| 2026-07-13 | Gallagher Thomas P. Chairman & CEO | Option exercise · Nonqualified Stock Option (Right to Buy) 10b5-1 | −70,000 | 0 | ||
| 2026-07-08 | BROWN DAVID A Director | Shares withheld for taxes | −171 | $43.72 | $7K | 7,066 |
| 2026-07-07 | Gallagher Thomas P. Chairman & CEO | Option exercise 10b5-1 | +28,228 | $12.00 | $339K | 1,751,503 |
| 2026-07-07 | Gallagher Thomas P. Chairman & CEO | Sale 10b5-1 | −28,228 | $42.27 | $1.2M | 1,723,275 |
| 2026-07-07 | Gallagher Thomas P. Chairman & CEO | Option exercise · Nonqualified Stock Option (Right to Buy) 10b5-1 | −28,228 | 70,000 | ||
| 2026-07-06 | Gallagher Thomas P. Chairman & CEO | Option exercise 10b5-1 | +41,772 | $12.00 | $501K | 1,765,047 |
| 2026-07-06 | Gallagher Thomas P. Chairman & CEO | Sale 10b5-1 | −41,772 | $42.09 | $1.8M | 1,723,275 |
| 2026-07-06 | Gallagher Thomas P. Chairman & CEO | Option exercise · Nonqualified Stock Option (Right to Buy) 10b5-1 | −41,772 | 98,228 | ||
| 2026-07-06 | Jayabalan Harish EVP, CISO and CRO | Option exercise 10b5-1 | +834 | $12.00 | $10K | 78,899 |
| 2026-07-06 | Jayabalan Harish EVP, CISO and CRO | Option exercise 10b5-1 | +16,667 | $12.00 | $200K | 95,566 |
| 2026-07-06 | Jayabalan Harish EVP, CISO and CRO | Option exercise 10b5-1 | +2,499 | $12.00 | $30K | 98,065 |
Page 5 of 15 · 296 trades