MIAXFinancial ServicesMid-Cap
MIAMI INTERNATIONAL HOLDINGS, INC. Insider Trading Activity
Every SEC Form 4 insider transaction reported for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud Research Team · SEC Form 4 & insider trading data analysts
Last updated:
Quick Answer
Are MIAX insiders buying or selling?
MIAMI INTERNATIONAL HOLDINGS, INC. insiders reported 16 open-market buys ($3.0M) and 43 sells ($57.0M) across 59 Form 4 filings — a net selling position of $54.0M.
Source: SEC EDGAR Form 4
Key Statistics (as of Jul 16, 2026)
Total Form 4 filings
59
SEC EDGAR
Insider filers
17
Insider buys (16)
$3.0M
Insider sells (43)
$57.0M
Insider sentiment
Net sellingNet insider flow of $54.0M in net selling.
Recent MIAX insider transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 16, 2026 | Cynthia Schwarzkopf | Director | Sale | 5.0K | $42.00 | $210.0K |
| Jul 14, 2026 | Barbara J. Comly | EVP, GC & Corporate Secretary | Sale | 28.0K | $41.98 | $1.2M |
| Jul 14, 2026 | Thomas P. Gallagher | Chairman & CEO | Sale | 70.0K | $42.52 | $3.0M |
| Jul 7, 2026 | Thomas P. Gallagher | Chairman & CEO | Sale | 70.0K | $42.16 | $3.0M |
| Jul 7, 2026 | Harish Jayabalan | EVP, CISO and CRO | Sale | 20.0K | $42.12 | $842.4K |
| Jul 7, 2026 | Edward Deitzel | EVP, CRO, CCO MIAX Exchanges | Sale | 11.0K | $42.04 | $462.4K |
| Jul 7, 2026 | Shelly Brown | EVP, Chief Strategy Officer | Sale | 16.0K | $42.13 | $674.1K |
| Jul 7, 2026 | Judson Gray Teekell | Director | Sale | 3.0K | $40.00 | $120.0K |
| Jul 7, 2026 | Kurt M. Eckert | Director | Sale | 5.3K | $39.35 | $206.6K |
| Jul 7, 2026 | Barbara J. Comly | EVP, GC & Corporate Secretary | Sale | 28.0K | $41.22 | $1.2M |
| Jul 7, 2026 | Douglas M. Schafer JR | EVP and CIO | Sale | 48.0K | $41.22 | $2.0M |
| Jun 17, 2026 | Shelly Brown | EVP, Chief Strategy Officer | Sale | 4.7K | $44.23 | $208.5K |
| Jun 12, 2026 | Cynthia Schwarzkopf | Director | Sale | 19.5K | $41.73 | $813.7K |
| Jun 10, 2026 | Harish Jayabalan | EVP, CISO and CRO | Sale | 20.0K | $40.08 | $801.6K |
| Jun 4, 2026 | Judson Gray Teekell | Director | Sale | 3.0K | $42.78 | $128.3K |
| Jun 4, 2026 | Kurt M. Eckert | Director | Sale | 5.3K | $42.76 | $224.5K |
| Jun 4, 2026 | Barbara J. Comly | EVP, GC & Corporate Secretary | Sale | 28.0K | $42.85 | $1.2M |
| Jun 4, 2026 | Edward Deitzel | EVP, CRO, CCO MIAX Exchanges | Sale | 11.0K | $42.16 | $463.8K |
| Jun 4, 2026 | Douglas M. Schafer JR | EVP and CIO | Sale | 48.0K | $42.84 | $2.1M |
| Jun 4, 2026 | Shelly Brown | EVP, Chief Strategy Officer | Sale | 16.0K | $42.12 | $673.9K |
| Jun 4, 2026 | Thomas P. Gallagher | Chairman & CEO | Sale | 70.0K | $42.36 | $3.0M |
| May 18, 2026 | Lance Emmons | EVP and CFO | Sale | 35.0K | $56.36 | $2.0M |
| May 7, 2026 | Thomas P. Gallagher | Chairman & CEO | Sale | 15.8K | $47.92 | $755.7K |
| May 5, 2026 | Thomas P. Gallagher | Chairman & CEO | Sale | 54.2K | $47.26 | $2.6M |
| May 5, 2026 | Edward Deitzel | EVP, CRO, CCO MIAX Exchanges | Sale | 11.0K | $47.28 | $520.1K |
Showing the 25 most recent of 59 Form 4 filings for MIAMI INTERNATIONAL HOLDINGS, INC..
Most active MIAX insiders
- Murray Stahl8 filings
- Shelly Brown8 filings
- Thomas P. Gallagher7 filings
- Barbara J. Comly5 filings
- Edward Deitzel5 filings
Ask anything about MIAX insider activity
Use Trabud's AI agent to query MIAMI INTERNATIONAL HOLDINGS, INC.'s Form 4 history in plain English — "Show me MIAX CEO purchases this year" or compare it against any other ticker.
Open the AI agentMIAX insider trading FAQ
Are MIAMI INTERNATIONAL HOLDINGS, INC. insiders buying or selling?
Across 59 SEC Form 4 filings, MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) insiders reported 16 open-market purchases totaling $3.0M and 43 sales totaling $57.0M. That is a net selling position of $54.0M.
How many insiders trade MIAX stock?
17 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for MIAMI INTERNATIONAL HOLDINGS, INC.. The most recent filing was accepted on Jul 16, 2026.
Where does Trabud get MIAX insider trading data?
All MIAX insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.
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