MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) Insider Trading -- Recent Executive & Director Transactions
26 insiders reported 286 Form 4 transactions for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) over the past 18 months (most recent 2026-10-06). Recent activity: Schafer Douglas M. JR (EVP and CIO) Buy 40,000 shares, Schafer Douglas M. JR (EVP and CIO) Sell 40,000 shares, Jayabalan Harish (EVP, CISO and CRO) Buy 8,333 shares, Brown Shelly (EVP, Chief Strategy Officer) Sell 21,217 shares, Brown Shelly (EVP, Chief Strategy Officer) Sell 16,283 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-06 | Schafer Douglas M. JR | EVP and CIO | Buy | 40,000 | $480,000 |
| 2026-10-06 | Schafer Douglas M. JR | EVP and CIO | Sell | 40,000 | $1.3M |
| 2026-09-29 | Jayabalan Harish | EVP, CISO and CRO | Buy | 8,333 | $99,996 |
| 2026-09-17 | Brown Shelly | EVP, Chief Strategy Officer | Sell | 21,217 | $819,188 |
| 2026-09-11 | Brown Shelly | EVP, Chief Strategy Officer | Sell | 16,283 | $692,679 |
| 2026-09-04 | Gallagher Thomas P. | Chairman & CEO | Sell | 47,000 | $2.0M |
| 2026-09-04 | Schafer Douglas M. JR | EVP and CIO | Buy | 43,334 | $520,008 |
| 2026-09-04 | Gallagher Thomas P. | Chairman & CEO | Buy | 47,000 | $564,000 |
| 2026-09-04 | Deitzel Edward | EVP, CRO, CCO MIAX Exchanges | Buy | 11,000 | $132,000 |
| 2026-09-04 | Comly Barbara J. | EVP, GC & Corporate Secretary | Buy | 44,445 | $533,340 |
| 2026-09-04 | Teekell Judson Gray | Director | Sell | 3,000 | $122,670 |
| 2026-09-04 | Schafer Douglas M. JR | EVP and CIO | Buy | 4,666 | $55,992 |
| 2026-09-04 | Teekell Judson Gray | Director | Sell | 5,545 | $230,561 |
| 2026-09-04 | Deitzel Edward | EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $464,310 |
| 2026-09-04 | Comly Barbara J. | EVP, GC & Corporate Secretary | Sell | 44,445 | $1.8M |
| 2026-09-04 | Schafer Douglas M. JR | EVP and CIO | Sell | 48,000 | $1.9M |
| 2026-09-04 | Gallagher Thomas P. | Chairman & CEO | Buy | 16,666 | $199,992 |
| 2026-09-04 | Gallagher Thomas P. | Chairman & CEO | Buy | 8,333 | $99,996 |
| 2026-09-04 | Gallagher Thomas P. | Chairman & CEO | Buy | 13,140 | $199,991 |
| 2026-09-04 | Gallagher Thomas P. | Chairman & CEO | Buy | 4,464 | $99,994 |
| 2026-08-20 | Gallagher Thomas P. | Chairman & CEO | Sell | 150,300 | $6.4M |
| 2026-08-20 | Comly Barbara J. | EVP, GC & Corporate Secretary | Sell | 43,420 | $1.8M |
| 2026-08-20 | Gallagher Thomas P. | Chairman & CEO | Sell | 149,700 | $6.2M |
| 2026-08-19 | Schwarzkopf Cynthia | Director | Buy | 5,000 | $60,000 |
| 2026-08-19 | Emmons Lance | EVP and CFO | Sell | 35,000 | $1.5M |
Source: SEC Form 4 filings · as of 2026-10-06