CIK 0001438472 · Non-accelerated filer
MIAMI INTERNATIONAL HOLDINGS, INC.
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- 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 |
|---|---|---|---|---|---|---|
| 2026-03-30 | Smollen John EVP, New Product Development | Shares withheld for taxes | −362 | $37.50 | $14K | 170,757 |
| 2026-03-30 | Emmons Lance EVP and CFO | Shares withheld for taxes | −8,350 | $37.50 | $313K | 119,262 |
| 2026-03-30 | Deitzel Edward EVP, CRO, CCO MIAX Exchanges | Shares withheld for taxes | −707 | $37.50 | $27K | 116,221 |
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Shares withheld for taxes | −1,809 | $37.50 | $68K | 297,388 |
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Option exercise | +8,333 | $12.00 | $100K | 305,721 |
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Option exercise | +6,570 | $15.22 | $100K | 312,291 |
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Option exercise | +6,195 | $16.14 | $100K | 318,486 |
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Option exercise | +3,878 | $25.78 | $100K | 322,364 |
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Option exercise | +5,040 | $19.84 | $100K | 327,404 |
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Option exercise · Incentive Stock Option (Right to Buy) | −8,333 | 0 | ||
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Option exercise · Incentive Stock Option (Right to Buy) | −6,570 | 0 | ||
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Option exercise · Incentive Stock Option (Right to Buy) | −6,195 | 0 | ||
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Option exercise · Incentive Stock Option (Right to Buy) | −3,878 | 0 | ||
| 2026-03-30 | Brown Shelly EVP, Chief Strategy Officer | Option exercise · Incentive Stock Option (Right to Buy) | −5,040 | 0 | ||
| 2026-03-30 | Gallagher Thomas P. Chairman & CEO | Shares withheld for taxes | −20,875 | $37.50 | $783K | 1,827,399 |
| 2026-03-25 | Teekell Judson Gray Director | Sale | −300 | $40.00 | $12K | 62,038 |
Page 15 of 15 · 296 trades