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 |
|---|---|---|---|---|---|---|
| 2026-05-04 | Schafer Douglas M. JR EVP and CIO | Option exercise 10b5-1 | +48,000 | $12.00 | $576K | 444,681 |
| 2026-05-04 | Schafer Douglas M. JR EVP and CIO | Sale 10b5-1 | −48,000 | $47.25 | $2.3M | 396,681 |
| 2026-05-04 | Schafer Douglas M. JR EVP and CIO | Option exercise · Nonqualified Stock Option (Right to Buy) 10b5-1 | −48,000 | 54,000 | ||
| 2026-05-04 | Teekell Judson Gray Director | Sale 10b5-1 | −3,000 | $47.30 | $142K | 56,338 |
| 2026-05-04 | Gallagher Thomas P. Chairman & CEO | Option exercise 10b5-1 | +54,229 | $12.00 | $651K | 1,777,504 |
| 2026-05-04 | Gallagher Thomas P. Chairman & CEO | Sale 10b5-1 | −54,229 | $47.26 | $2.6M | 1,723,275 |
| 2026-05-04 | Gallagher Thomas P. Chairman & CEO | Option exercise · Nonqualified Stock Option (Right to Buy) 10b5-1 | −54,229 | 225,771 | ||
| 2026-05-04 | Deitzel Edward EVP, CRO, CCO MIAX Exchanges | Option exercise 10b5-1 | +11,000 | $12.00 | $132K | 127,221 |
| 2026-05-04 | Deitzel Edward EVP, CRO, CCO MIAX Exchanges | Sale 10b5-1 | −11,000 | $47.28 | $520K | 116,221 |
| 2026-05-04 | Deitzel Edward EVP, CRO, CCO MIAX Exchanges | Option exercise · Nonqualified Stock Option (Right to Buy) 10b5-1 | −11,000 | 18,333 | ||
| 2026-04-15 | Gallagher Thomas P. Chairman & CEO | Option exercise 10b5-1 | +70,001 | $12.00 | $840K | 1,897,400 |
| 2026-04-15 | Gallagher Thomas P. Chairman & CEO | Sale 10b5-1 | −70,001 | $43.36 | $3.0M | 1,827,399 |
| 2026-04-15 | Gallagher Thomas P. Chairman & CEO | Sale 10b5-1 | −104,124 | $43.36 | $4.5M | 1,723,275 |
| 2026-04-15 | Gallagher Thomas P. Chairman & CEO | Sale 10b5-1 | −49,900 | $43.68 | $2.2M | 485,963 |
| 2026-04-15 | Gallagher Thomas P. Chairman & CEO | Option exercise · Nonqualified Stock Option (Right to Buy) 10b5-1 | −70,001 | 280,000 | ||
| 2026-04-15 | Comly Barbara J. EVP, GC & Corporate Secretary | Option exercise 10b5-1 | +29,667 | $12.00 | $356K | 873,511 |
| 2026-04-15 | Comly Barbara J. EVP, GC & Corporate Secretary | Sale 10b5-1 | −29,667 | $43.64 | $1.3M | 843,844 |
| 2026-04-15 | Comly Barbara J. EVP, GC & Corporate Secretary | Option exercise · Nonqualified Stock Option (Right to Buy) 10b5-1 | −29,667 | 112,000 | ||
| 2026-04-09 | Beckelman John Director | Option exercise | +8,667 | $12.00 | $104K | 8,667 |
| 2026-04-09 | Beckelman John Director | Option exercise · Stock Option (Right to Buy) | −8,667 | 0 |
Page 13 of 15 · 296 trades