NYSE · CIK 0001438472
MIAX MIAMI INTERNATIONAL HOLDINGS, INC.
Insider trading from SEC Form 4. Last filing 6 d ago. Close $30.71 on Oct 9, 2026, +2% from the 52-week low and -46% from the high.
Last 90 days
Price and insider trades, last year
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at MIAMI INTERNATIONAL HOLDINGS, INC., scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 5Weak | Douglas M. Schafer JR EVP and CIO sell | $1.3M 40,000 shares | -9% | 0% from low-42% from high | |
| 32Weak | Shelly Brown EVP, Chief Strategy Officer sell | $819k 21,217 shares | -6% | - | |
| 20Weak | Barbara J. Comly EVP, GC & Corporate Secretary sell | $1.8M 44,445 shares | -5% | - | |
| 12Weak | Edward Deitzel EVP, CRO, CCO MIAX Exchanges sell | $464k 11,000 shares | -8% | - | |
| 30Weak | Thomas P. Gallagher Chairman & CEO sell | $2.0M 47,000 shares | -3% | - | |
| 25Weak | Judson Gray Teekell director sell | $353k 8,545 shares | -10% | - | |
| 25Weak | Douglas M. Schafer JR EVP and CIO sell | $1.9M 48,000 shares | -11% | - | |
| 39Weak | Murray Stahl director buy | $100k 2,439 shares | +0% | +39% from low-16% from high | |
| 25Weak | Murray Stahl director buy | $84 2 shares | +0% | +37% from low0% from high | |
| 53Moderate | Murray Stahl director buy | $1.2M 34,470 shares | +1% | +15% from low0% from high | |
| 25Weak | Murray Stahl director buy | $167 4 shares | +0% | +34% from low-2% from high | |
| 55Moderate | Lance Emmons EVP and CFO buy | $126 4 shares | - | 0% from low0% from high | |
| 25Weak | Edward Deitzel EVP, CRO, CCO MIAX Exchanges buy | $2,300 100 shares | +0% | - | |
| 62Notable | Thomas P. Gallagher Chairman & CEO buy | $276k 12,000 shares | - | - | |
| 47Moderate | Harish Jayabalan EVP, CISO and CRO buy | $58k 2,500 shares | +63% | - | |
| 38Weak | Kenneth W. Lozier director buy | $23k 1,000 shares | - | - | |
| 50Moderate | Mark I. Massad director buy | $184k 8,000 shares | - | - | |
| 50Moderate | John Smollen EVP Traded Products & Relation buy | $115k 5,000 shares | +225% | - | |
| 45Moderate | Jamil Nazarali director buy | $58k 2,500 shares | - | - | |
| 38Weak | Paul Stahlin director buy | $23k 1,000 shares | - | - | |
| 49Moderate | Lisa Moore director buy | $127k 5,500 shares | - | - |
Congressional trades
1 trade in MIAX disclosed by members of Congress under the STOCK Act. All congressional trades.
- Gilbert Ray Cisneros, Jr.House · D-CA · last Apr 7, 20261 bought
0 sold
| Member | Trade | Asset | Reported range | Trade / filing date | Source |
|---|---|---|---|---|---|
Gilbert Ray Cisneros, Jr. House · D-CA | Purchase | MIAX Miami International Holdings, Inc. Common Stock | $15k to $50k | Mar 20 / Apr 7 18 days after the trade | Clerk |
Transactions
The last 100 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Oct 2, 2026 | Douglas M. Schafer JR EVP and CIO | MOption exercise Common Stock10b5-1 | +40,000 | $12.00 | $480k | 427,414 | 6 d ago |
| Oct 2, 2026 | Douglas M. Schafer JR EVP and CIO | SOpen-market sale Common Stock10b5-1 | -40,000 | $33.34 | $1.3M | 387,414 | 6 d ago |
| Oct 2, 2026 | Douglas M. Schafer JR EVP and CIO | MOption exercise Nonqualified Stock Option (Right to Buy)derivative10b5-1 | -40,000 | $0.00 | $0 | 155,334 | 6 d ago |
| Sep 25, 2026 | Harish Jayabalan EVP, CISO and CRO | MOption exercise Common Stock | +8,333 | $12.00 | $100k | 86,398 | 13 d ago |
| Sep 25, 2026 | Harish Jayabalan EVP, CISO and CRO | MOption exercise Incentive Stock Option (Right to Buy)derivative | -8,333 | $0.00 | $0 | 8,333 | 13 d ago |
| Sep 16, 2026 | Shelly Brown EVP, Chief Strategy Officer | SOpen-market sale Common Stock10b5-1 | -21,217 | $38.61 | $819k | 316,490 | 25 d ago |
| Sep 11, 2026 | Shelly Brown EVP, Chief Strategy Officer | FTax withholding Common Stock | -16,283 | $42.54 | $693k | 337,707 | 31 d ago |
| Sep 3, 2026 | Edward Deitzel EVP, CRO, CCO MIAX Exchanges | MOption exercise Common Stock10b5-1 | +11,000 | $12.00 | $132k | 130,601 | 38 d ago |
| Sep 2, 2026 | Judson Gray Teekell director | SOpen-market sale Common Stockindirect: By estate of Byrum W. Teekell10b5-1 | -5,545 | $41.58 | $231k | 81,000 | 38 d ago |
| Sep 2, 2026 | Barbara J. Comly EVP, GC & Corporate Secretary | MOption exercise Common Stock10b5-1 | +44,445 | $12.00 | $533k | 884,009 | 38 d ago |
| Sep 2, 2026 | Douglas M. Schafer JR EVP and CIO | MOption exercise Common Stock10b5-1 | +43,334 | $12.00 | $520k | 430,748 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | MOption exercise Common Stockindirect: By Gallagher Investments, LLC10b5-1 | +47,000 | $12.00 | $564k | 1,470,275 | 38 d ago |
| Sep 3, 2026 | Edward Deitzel EVP, CRO, CCO MIAX Exchanges | SOpen-market sale Common Stock10b5-1 | -11,000 | $42.21 | $464k | 119,601 | 38 d ago |
| Sep 2, 2026 | Douglas M. Schafer JR EVP and CIO | MOption exercise Common Stock10b5-1 | +4,666 | $12.00 | $56k | 435,414 | 38 d ago |
| Sep 2, 2026 | Barbara J. Comly EVP, GC & Corporate Secretary | SOpen-market sale Common Stock10b5-1 | -44,445 | $40.49 | $1.8M | 839,564 | 38 d ago |
| Sep 2, 2026 | Judson Gray Teekell director | SOpen-market sale Common Stock10b5-1 | -3,000 | $40.89 | $123k | 69,251 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | SOpen-market sale Common Stockindirect: By Gallagher Investments, LLC10b5-1 | -47,000 | $42.43 | $2.0M | 1,423,275 | 38 d ago |
| Sep 2, 2026 | Barbara J. Comly EVP, GC & Corporate Secretary | MOption exercise Nonqualified Stock Option (Right to Buy)derivative10b5-1 | -44,445 | $0.00 | $0 | 44,444 | 38 d ago |
| Sep 3, 2026 | Edward Deitzel EVP, CRO, CCO MIAX Exchanges | MOption exercise Nonqualified Stock Option (Right to Buy)derivative10b5-1 | -11,000 | $0.00 | $0 | 66,000 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | MOption exercise Common Stock10b5-1 | +16,666 | $12.00 | $200k | 760,605 | 38 d ago |
| Sep 2, 2026 | Douglas M. Schafer JR EVP and CIO | SOpen-market sale Common Stock10b5-1 | -48,000 | $40.48 | $1.9M | 387,414 | 38 d ago |
| Sep 2, 2026 | Douglas M. Schafer JR EVP and CIO | MOption exercise Nonqualified Stock Option (Right to Buy)derivative10b5-1 | -43,334 | $0.00 | $0 | 0 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | MOption exercise Common Stock10b5-1 | +8,333 | $12.00 | $100k | 768,938 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | MOption exercise Common Stock10b5-1 | +13,140 | $15.22 | $200k | 782,078 | 38 d ago |
| Sep 2, 2026 | Douglas M. Schafer JR EVP and CIO | MOption exercise Nonqualified Stock Option (Right to Buy)derivative10b5-1 | -4,666 | $0.00 | $0 | 195,334 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | MOption exercise Common Stock10b5-1 | +4,464 | $22.40 | $100k | 786,542 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | MOption exercise Nonqualified Stock Option (Right to Buy)derivativeindirect: By Gallagher Investments, LLC10b5-1 | -47,000 | $0.00 | $0 | 188,000 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | MOption exercise Incentive Stock Option (Right to Buy)derivative10b5-1 | -16,666 | $0.00 | $0 | 0 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | MOption exercise Incentive Stock Option (Right to Buy)derivative10b5-1 | -8,333 | $0.00 | $0 | 0 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | MOption exercise Incentive Stock Option (Right to Buy)derivative10b5-1 | -13,140 | $0.00 | $0 | 0 | 38 d ago |
| Sep 3, 2026 | Thomas P. Gallagher Chairman & CEO | MOption exercise Incentive Stock Option (Right to Buy)derivative10b5-1 | -4,464 | $0.00 | $0 | 8,928 | 38 d ago |
| Dec 23, 2025 | Thomas P. Gallagher Chairman & CEO | GGift Common Stock | -2,000 | - | - | 585,963 | Dec 29, 2025 |
| Dec 16, 2025 | Shelly Brown EVP, Chief Strategy Officer | MOption exercise Common Stock | +16,666 | $12.00 | $200k | 328,365 | Dec 17, 2025 |
| Dec 16, 2025 | Lance Emmons EVP and CFO | MOption exercise Common Stock | +22,221 | $13.50 | $300k | 116,377 | Dec 17, 2025 |
| Dec 16, 2025 | Shelly Brown EVP, Chief Strategy Officer | MOption exercise Common Stock | +8,333 | $12.00 | $100k | 336,698 | Dec 17, 2025 |
| Dec 16, 2025 | Lance Emmons EVP and CFO | MOption exercise Common Stock | +6,195 | $16.14 | $100k | 122,572 | Dec 17, 2025 |
| Dec 16, 2025 | Shelly Brown EVP, Chief Strategy Officer | MOption exercise Common Stock | +8,333 | $12.00 | $100k | 345,031 | Dec 17, 2025 |
| Dec 16, 2025 | Lance Emmons EVP and CFO | MOption exercise Common Stock | +5,040 | $19.84 | $100k | 127,612 | Dec 17, 2025 |
| Dec 16, 2025 | Lance Emmons EVP and CFO | MOption exercise Incentive Stock Option (Right to Buy)derivative | -22,221 | $0.00 | $0 | 0 | Dec 17, 2025 |
| Dec 16, 2025 | Shelly Brown EVP, Chief Strategy Officer | MOption exercise Incentive Stock Option (Right to Buy)derivative | -16,666 | $0.00 | $0 | 0 | Dec 17, 2025 |
| Dec 16, 2025 | Lance Emmons EVP and CFO | MOption exercise Incentive Stock Option (Right to Buy)derivative | -6,195 | $0.00 | $0 | 0 | Dec 17, 2025 |
| Dec 16, 2025 | Shelly Brown EVP, Chief Strategy Officer | MOption exercise Incentive Stock Option (Right to Buy)derivative | -8,333 | $0.00 | $0 | 0 | Dec 17, 2025 |
| Dec 16, 2025 | Lance Emmons EVP and CFO | MOption exercise Incentive Stock Option (Right to Buy)derivative | -5,040 | $0.00 | $0 | 5,040 | Dec 17, 2025 |
| Dec 16, 2025 | Shelly Brown EVP, Chief Strategy Officer | MOption exercise Incentive Stock Option (Right to Buy)derivative | -8,333 | $0.00 | $0 | 0 | Dec 17, 2025 |
| Dec 12, 2025 | Murray Stahl director | POpen-market purchase Common Stockindirect: Horizon Kinetics Asset Management LLC | +2,439 | $41.00 | $100k | 4,560,364 | Dec 15, 2025 |
| Oct 3, 2025 | Murray Stahl director | POpen-market purchase Common Stockindirect: Horizon Kinetics Asset Management LLC | +2 | $41.97 | $84 | 4,557,925 | Oct 6, 2025 |
| Aug 28, 2025 | Murray Stahl director | POpen-market purchase Common Stockindirect: Horizon Kinetics Asset Management LLC | +34,470 | $36.10 | $1.2M | 4,557,919 | Sep 30, 2025 |
| Sep 26, 2025 | Murray Stahl director | POpen-market purchase Common Stockindirect: Horizon Kinetics Asset Management LLC | +4 | $41.76 | $167 | 4,557,923 | Sep 30, 2025 |
| Sep 11, 2025 | John Smollen EVP Traded Products & Relation | MOption exercise Common Stock | +125,001 | $12.00 | $1.5M | 193,174 | Sep 15, 2025 |
| Sep 11, 2025 | John Smollen EVP Traded Products & Relation | FTax withholding Common Stock | -52,054 | $37.39 | $1.9M | 141,120 | Sep 15, 2025 |
| Sep 11, 2025 | John Smollen EVP Traded Products & Relation | MOption exercise Common Stock | +24,999 | $12.00 | $300k | 166,119 | Sep 15, 2025 |
| Sep 11, 2025 | John Smollen EVP Traded Products & Relation | MOption exercise Nonqualified Stock Option (Right to Buy)derivative | -125,001 | $0.00 | $0 | 0 | Sep 15, 2025 |
| Sep 11, 2025 | John Smollen EVP Traded Products & Relation | MOption exercise Incentive Stock Option (Right to Buy)derivative | -24,999 | $0.00 | $0 | 0 | Sep 15, 2025 |
| Sep 10, 2025 | Shelly Brown EVP, Strat. Planning & BD | FTax withholding Common Stock | -16,283 | $36.81 | $599k | 311,699 | Sep 11, 2025 |
| Sep 9, 2025 | Edward Deitzel EVP, CRO, CCO MIAX Exchanges | MOption exercise Common Stock | +62,500 | $12.00 | $750k | 144,387 | Sep 11, 2025 |
| Sep 9, 2025 | Harish Jayabalan EVP, CISO and CRO | MOption exercise Common Stock | +21,999 | $12.00 | $264k | 72,384 | Sep 11, 2025 |
| Sep 9, 2025 | Edward Deitzel EVP, CRO, CCO MIAX Exchanges | FTax withholding Common Stock | -38,090 | $37.30 | $1.4M | 106,297 | Sep 11, 2025 |
| Sep 9, 2025 | Harish Jayabalan EVP, CISO and CRO | MOption exercise Common Stock | +3,001 | $12.00 | $36k | 75,385 | Sep 11, 2025 |
| Sep 11, 2025 | Edward Deitzel EVP, CRO, CCO MIAX Exchanges | MOption exercise Common Stock | +16,666 | $12.00 | $200k | 122,963 | Sep 11, 2025 |
| Sep 9, 2025 | Harish Jayabalan EVP, CISO and CRO | FTax withholding Common Stock | -1,980 | $37.30 | $74k | 73,405 | Sep 11, 2025 |
| Sep 9, 2025 | Edward Deitzel EVP, CRO, CCO MIAX Exchanges | MOption exercise Nonqualified Stock Option (Right to Buy)derivative | -62,500 | $0.00 | $0 | 0 | Sep 11, 2025 |
| Sep 9, 2025 | Harish Jayabalan EVP, CISO and CRO | MOption exercise Incentive Stock Option (Right to Buy)derivative | -21,999 | $0.00 | $0 | 0 | Sep 11, 2025 |
| Sep 10, 2025 | Edward Deitzel EVP, CRO, CCO MIAX Exchanges | MOption exercise Incentive Stock Option (Right to Buy)derivative | -16,666 | $0.00 | $0 | 0 | Sep 11, 2025 |
| Sep 9, 2025 | Harish Jayabalan EVP, CISO and CRO | MOption exercise Nonqualified Stock Option (Right to Buy)derivative | -3,001 | $0.00 | $0 | 0 | Sep 11, 2025 |
| Aug 26, 2025 | Shelly Brown EVP, Strat. Planning & BD | FTax withholding Common Stock | -11,047 | $33.90 | $374k | 327,982 | Aug 28, 2025 |
| Aug 26, 2025 | Thomas P. Gallagher Chairman & CEO | FTax withholding Common Stockindirect: By Gallagher Investments, LLC | -192,220 | $33.90 | $6.5M | 1,848,274 | Aug 28, 2025 |
| Aug 15, 2025 | Talal Jassim Al-Bahar director | CConversion Common Stockindirect: By Arzan AM Limited | +238,462 | - | - | 3,617,296 | Aug 19, 2025 |
| Aug 15, 2025 | David A Brown director | MOption exercise Stock Option (Right to Buy)derivative | -18,750 | $0.00 | $0 | 0 | Aug 19, 2025 |
| Aug 15, 2025 | John Beckelman director | MOption exercise Stock Option (Right to Buy)derivative | -8,667 | $0.00 | $0 | 0 | Aug 19, 2025 |
| Aug 15, 2025 | Shelly Brown EVP, Strat. Planning & BD | CConversion Common Stock | +500 | - | - | 339,029 | Aug 19, 2025 |
| Aug 15, 2025 | Cynthia Schwarzkopf director | CConversion Common Stock | +36,250 | - | - | 81,308 | Aug 19, 2025 |
| Aug 15, 2025 | Kurt M. Eckert director | CConversion Common Stock | +46,875 | - | - | 167,375 | Aug 19, 2025 |
| Aug 15, 2025 | Douglas M. Schafer JR EVP and CIO | CConversion Common Stock | +500 | - | - | 537,796 | Aug 19, 2025 |
| Aug 15, 2025 | Thomas P. Gallagher Chairman & CEO | CConversion Common Stockindirect: By Gallagher Investments, LLC | +500 | - | - | 2,040,494 | Aug 19, 2025 |
| Aug 15, 2025 | John Smollen EVP Traded Products & Relation | CConversion Common Stock | +73,173 | - | - | 68,173 | Aug 19, 2025 |
| Aug 15, 2025 | Judson Gray Teekell director | CConversion Common Stock | +30,000 | - | - | 62,338 | Aug 19, 2025 |
| Aug 15, 2025 | Edward Deitzel EVP, CRO, CCO MIAX Exchanges | CConversion Common Stock | +500 | - | - | 81,887 | Aug 19, 2025 |
| Aug 15, 2025 | Paul Stahlin director | CConversion Common Stock | +10,000 | - | - | 25,083 | Aug 19, 2025 |
| Aug 15, 2025 | Mark F. Raymond director | CConversion Common Stock | +17,500 | - | - | 43,827 | Aug 19, 2025 |
| Aug 15, 2025 | Harish Jayabalan EVP, CISO and CRO | CConversion Common Stock | +500 | - | - | 50,385 | Aug 19, 2025 |
| Aug 15, 2025 | Barbara J. Comly EVP, GC & Corporate Secretary | CConversion Common Stock | +100,500 | - | - | 811,960 | Aug 19, 2025 |
| Aug 15, 2025 | Paul Stahlin director | CConversion Common Stock | +14,083 | - | - | 25,083 | Aug 19, 2025 |
| Aug 15, 2025 | Talal Jassim Al-Bahar director | CConversion Nonvoting Common Stockderivativeindirect: By Arzan AM Limited | -238,462 | $0.00 | $0 | 0 | Aug 19, 2025 |
| Aug 15, 2025 | David A Brown director | MOption exercise Stock Option (Right to Buy)derivative | +18,750 | $0.00 | $0 | 18,750 | Aug 19, 2025 |
| Aug 15, 2025 | Thomas P. Gallagher Chairman & CEO | CConversion Common Stock | +573,963 | - | - | 585,963 | Aug 19, 2025 |
| Aug 15, 2025 | John Beckelman director | MOption exercise Stock Option (Right to Buy)derivative | +8,667 | $0.00 | $0 | 8,667 | Aug 19, 2025 |
| Aug 15, 2025 | Harish Jayabalan EVP, CISO and CRO | CConversion Common Stock | +43,442 | - | - | 50,385 | Aug 19, 2025 |
| Aug 15, 2025 | Shelly Brown EVP, Strat. Planning & BD | CConversion Common Stock | +200,475 | - | - | 339,029 | Aug 19, 2025 |
| Aug 15, 2025 | Edward Deitzel EVP, CRO, CCO MIAX Exchanges | CConversion Common Stock | +49,194 | - | - | 81,887 | Aug 19, 2025 |
| Aug 15, 2025 | Kurt M. Eckert director | CConversion Nonvoting Common Stockderivative | -46,875 | $0.00 | $0 | 0 | Aug 19, 2025 |
| Aug 15, 2025 | Barbara J. Comly EVP, GC & Corporate Secretary | CConversion Common Stock | +130,617 | - | - | 811,960 | Aug 19, 2025 |
| Aug 15, 2025 | Douglas M. Schafer JR EVP and CIO | CConversion Common Stock | +387,296 | - | - | 537,796 | Aug 19, 2025 |
| Aug 15, 2025 | John Smollen EVP Traded Products & Relation | CConversion Common Stockindirect: Held by Quivetneck Capital LLC of which Mr. Smollen is a managing member | +91,666 | - | - | 91,666 | Aug 19, 2025 |
| Aug 15, 2025 | Judson Gray Teekell director | CConversion Common Stock | +31,242 | - | - | 62,338 | Aug 19, 2025 |
| Aug 15, 2025 | Mark F. Raymond director | CConversion Common Stock | +26,327 | - | - | 43,827 | Aug 19, 2025 |
| Aug 15, 2025 | Cynthia Schwarzkopf director | CConversion Common Stock | +45,058 | - | - | 81,308 | Aug 19, 2025 |
| Aug 15, 2025 | David A Brown director | MOption exercise Stock Option (Right to Buy)derivative | -7,500 | $0.00 | $0 | 0 | Aug 19, 2025 |
| Aug 15, 2025 | Shelly Brown EVP, Strat. Planning & BD | CConversion Series B Preferred Stockderivative | -500 | $0.00 | $0 | 0 | Aug 19, 2025 |
| Aug 15, 2025 | Thomas P. Gallagher Chairman & CEO | CConversion Common Stockindirect: By Gallagher Investments, LLC | +135,395 | - | - | 2,040,494 | Aug 19, 2025 |
| Aug 15, 2025 | Harish Jayabalan EVP, CISO and CRO | CConversion Series B Preferred Stockderivative | -500 | $0.00 | $0 | 0 | Aug 19, 2025 |
Insiders
Everyone who has filed a Form 4 here.
- Talal Jassim Al-Bahardirector
- David A Browndirector
- John Beckelmandirector
- Shelly BrownEVP, Chief Strategy Officer
- Barbara J. ComlyEVP, GC & Corporate Secretary
- Edward DeitzelEVP, CRO, CCO MIAX Exchanges
- Kurt M. Eckertdirector
- Lance EmmonsEVP and CFO
- Thomas P. GallagherChairman & CEO
- Harish JayabalanEVP, CISO and CRO
- Kenneth W. Lozierdirector
- Mark I. Massaddirector
- Lisa Mooredirector
- Jamil Nazaralidirector
- Mark F. Raymonddirector
- Murray Stahldirector, ceo, officer, owner, president, other
- Douglas M. Schafer JREVP and CIO
- Cynthia Schwarzkopfdirector
- John SmollenEVP Traded Products & Relation
- Paul Stahlindirector
- Judson Gray Teekelldirector
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.