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Insider ActivityMIAX
Gallagher Thomas P., Chairman & CEO, Director at MIAMI INTERNATIONAL HOLDINGS, INC., traded $783K of MIAX
Updated Jun 14, 2026
Gallagher Thomas P.
Chairman & CEO, Director
MIAMI INTERNATIONAL HOLDINGS, INC. ·
$MIAX
Transaction Details
| Insider | Gallagher Thomas P. |
|---|---|
| Title | Chairman & CEO, Director |
| Company | MIAMI INTERNATIONAL HOLDINGS, INC. |
| Ticker | MIAX |
| Transaction Type | Tax |
| Transaction Date | 2026-03-30 |
| Shares Traded | 20,875 |
| Price Per Share | $37.5 |
| Total Value | $783K |
| Filed Date | 2026-04-01 |
| Accession Number | 0002080477-26-000004 |
Ownership Context
| Shares Owned After Transaction | 1,827,399 |
|---|---|
| Ownership Type | Indirect |
SEC Filing
Accession: 0002080477-26-000004
Other Insider Trades — MIAX
| Insider | Title | Action | Value | Date |
|---|---|---|---|---|
| Schwarzkopf Cynthia | Director | sold | $814K | 2026-06-11 |
| Stahlin Paul | Director | traded | $48K | 2026-06-11 |
| Brown Shelly | EVP, Chief Strategy Officer | traded | $148K | 2026-06-11 |
| Schafer Douglas M. JR | EVP and CIO | traded | $1.3M | 2026-06-11 |
| Schwarzkopf Cynthia | Director | traded | $234K | 2026-06-11 |
| Deitzel Edward | EVP, CRO, CCO MIAX Exchanges | traded | $242K | 2026-06-11 |
| Stahlin Paul | Director | traded | $48K | 2026-06-11 |
| Jayabalan Harish | EVP, CISO and CRO | sold | $392K | 2026-06-09 |
| Jayabalan Harish | EVP, CISO and CRO | traded | $117K | 2026-06-09 |
| Stahlin Paul | Director | traded | $84K | 2026-06-09 |
Other Trades by Gallagher Thomas P.
| Ticker | Company | Action | Value | Date |
|---|---|---|---|---|
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | traded | $840K | 2026-06-02 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | sold | $3.0M | 2026-06-02 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | traded | $300K | 2026-05-11 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | sold | $756K | 2026-05-05 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | traded | $189K | 2026-05-05 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | sold | $2.6M | 2026-05-04 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | traded | $651K | 2026-05-04 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | traded | $840K | 2026-04-15 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | sold | $2.2M | 2026-04-15 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | sold | $4.5M | 2026-04-15 |
Full Ticker Profile
View all insider trades, dark pool activity, congressional filings, and the Whisper Score for MIAX — MIAMI INTERNATIONAL HOLDINGS, INC. →
Whisper Score — MIAX
88.07
Full Degen
Current Whisper Score
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Data sourced from SEC Form 4 insider trading filings. Transaction details are as reported to the Securities and Exchange Commission. This page does not constitute financial advice. StonkWhisper presents public records — it does not verify or guarantee the accuracy of SEC filings.
Last updated: June 14, 2026 at 07:21 UTC