Miami International Holdings ($MIAX) Insider Trading & Smart Money Activity
Miami International Holdings, Inc. ($MIAX) has 42 insider trades on file. In the last 12 months on the open market, no insider bought and 2 insiders sold ($1.54M), net -$1.54M.
- Insider buyers (12 mo)
- 0
- Insider sellers (12 mo)
- 2
- Net insider $ (12 mo)
- -$1.54M
- Congress trades (12 mo)
- 0
- 13F moves on file
- 0
- Analyst ratings on file
- 0
MIAX insider buying and selling by quarter
| Quarter | Insider buys | Insider sales | Congress buys / sales | 13F added / cut |
|---|---|---|---|---|
| Q1 2026 | 0 | 0 | 0 / 0 | 0 / 0 |
| Q2 2026 | 0 | 1 · $208.50K | 0 / 0 | 0 / 0 |
| Q3 2026 | 0 | 0 | 0 / 0 | 0 / 0 |
| Q4 2026 | 0 | 1 · $1.33M | 0 / 0 | 0 / 0 |
Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.
All MIAX insider, congress, 13F and analyst activity
| Date | Source | Who | Action | Shares | Value / amount | ΔOwn | 1W | 1M | 6M | Filing | Story |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insider | Schafer Douglas M. JREVP and CIO | Sell (Open-market sale) 10b5-1 | 40K sh | $1.33M | -7.0% | — | |||||
| Insider | Cees VermaasCEO of TISEG | Buy (Grant or award) | 4.79K sh | -11.0% | +6.6% | — | |||||
| Insider | Teekell Judson Gray | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | — | |||||
| Insider | Paul Stahlin | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | — | |||||
| Insider | Jill Sommers | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | — | |||||
| Insider | John SmollenEVP, New Product Development | Buy (Grant or award) | 5.18K sh | -11.0% | +6.6% | — | |||||
| Insider | Eric Sites | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | Read | |||||
| Insider | Cynthia Schwarzkopf | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | — | |||||
| Insider | Schafer Douglas JREVP and CIO | Buy (Grant or award) | 23.30K sh | -11.0% | +6.6% | — | |||||
| Insider | Mark Raymond | Sell (Option exercise) | 16K sh | -11.0% | +6.6% | — | |||||
| Insider | Mark Raymond | Buy (Option exercise) | 16K sh | $192K | -11.0% | +6.6% | — | ||||
| Insider | Lisa Moore | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | — | |||||
| Insider | Mark Massad | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | — | |||||
| Insider | Kenneth Lozier | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | — | |||||
| Insider | Harish JayabalanEVP, CISO and CRO | Buy (Grant or award) | 4.66K sh | -11.0% | +6.6% | — | |||||
| Insider | Thomas GallagherChairman & CEO | Buy (Grant or award) | 232.98K sh | -11.0% | +6.6% | — | |||||
| Insider | Lance EmmonsEVP and CFO | Buy (Grant or award) | 2.48K sh | -11.0% | +6.6% | — | |||||
| Insider | Kurt Eckert | Buy (Grant or award) | 7.71K sh | -11.0% | +6.6% | — | |||||
| Insider | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Buy (Grant or award) | 7.10K sh | -11.0% | +6.6% | — | |||||
| Insider | Barbara ComlyEVP, GC & Corporate Secretary | Buy (Grant or award) | 39.14K sh | -11.0% | +6.6% | — | |||||
| Insider | Shelly BrownEVP, Chief Strategy Officer | Buy (Grant or award) | 2.48K sh | -11.0% | +6.6% | — | |||||
| Insider | David Brown | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | Read | |||||
| Insider | John Beckelman | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | — | |||||
| Insider | Al-Bahar Talal Jassim | Buy (Grant or award) | 4.97K sh | -11.0% | +6.6% | Read | |||||
| Insider | Paul Stahlin | Buy (Grant or award) | 2.27K sh | -16.9% | -3.8% | — | |||||
| Insider | Jill Sommers | Buy (Grant or award) | 1.11K sh | -16.9% | -3.8% | Read | |||||
| Insider | Eric Sites | Buy (Grant or award) | 714 sh | -16.9% | -3.8% | Read | |||||
| Insider | Cynthia Schwarzkopf | Buy (Grant or award) | 2.27K sh | -16.9% | -3.8% | — | |||||
| Insider | Mark Raymond | Buy (Grant or award) | 2.27K sh | -16.9% | -3.8% | Read | |||||
| Insider | Kurt Eckert | Buy (Grant or award) | 2.27K sh | -16.9% | -3.8% | — | |||||
| Insider | Shelly BrownEVP, Chief Strategy Officer | Sell (Open-market sale) 10b5-1 | 4.71K sh | $208.50K | -16.9% | -3.8% | — | ||||
| Insider | David Brown | Buy (Grant or award) | 2.27K sh | -16.9% | -3.8% | Read | |||||
| Insider | John Beckelman | Buy (Grant or award) | 2.27K sh | -16.9% | -3.8% | — | |||||
| Insider | Cynthia Schwarzkopf | Sell (Option exercise) | 19.50K sh | -8.8% | +2.5% | — | |||||
| Insider | Cynthia Schwarzkopf | Sell (Option exercise) | 19.50K sh | -8.8% | +2.5% | — | |||||
| Insider | Cynthia Schwarzkopf | Buy (Option exercise) | 19.50K sh | $234K | -8.8% | +2.5% | — | ||||
| Insider | Schafer Douglas JREVP and CIO | Sell (Tax withholding) | 32.56K sh | $1.33M | -8.8% | +2.5% | — | ||||
| Insider | Schafer Douglas JREVP and CIO | Sell (Tax withholding) | 32.56K sh | $1.33M | -8.8% | +2.5% | — | ||||
| Insider | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Sell (Tax withholding) | 5.94K sh | $242.25K | -8.8% | +2.5% | — | ||||
| Insider | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Sell (Tax withholding) | 5.94K sh | $242.25K | -8.8% | +2.5% | — | ||||
| Insider | Shelly BrownEVP, Chief Strategy Officer | Sell (Tax withholding) | 3.62K sh | $147.62K | -8.8% | +2.5% | — | ||||
| Insider | Shelly BrownEVP, Chief Strategy Officer | Sell (Tax withholding) | 3.62K sh | $147.62K | -8.8% | +2.5% | — |
1W / 1M / 6M = how MIAX moved from the trade or filing date.
Insider trading in MIAX: who is buying and selling
| Insider | Role | Trades | Open-market net | Shares held | Last trade |
|---|---|---|---|---|---|
| Schafer Douglas M. JR | EVP and CIO | 1 | -$1.33M | Oct 2, 2026 | |
| Cynthia Schwarzkopf | 5 | — | Jun 16, 2026 | ||
| Shelly Brown | EVP, Chief Strategy Officer | 4 | -$208.50K | Jun 16, 2026 | |
| Schafer Douglas JR | EVP and CIO | 3 | — | Jun 16, 2026 | |
| Mark Raymond | 3 | — | Jun 16, 2026 | ||
| Edward Deitzel | EVP, CRO, CCO MIAX Exchanges | 3 | — | Jun 16, 2026 | |
| Paul Stahlin | 2 | — | Jun 16, 2026 | ||
| Jill Sommers | 2 | — | Jun 16, 2026 | ||
| Eric Sites | 2 | — | Jun 16, 2026 | ||
| Kurt Eckert | 2 | — | Jun 16, 2026 | ||
| David Brown | 2 | — | Jun 16, 2026 | ||
| John Beckelman | 2 | — | Jun 16, 2026 | ||
| Cees Vermaas | CEO of TISEG | 1 | — | Jun 16, 2026 | |
| Teekell Judson Gray | 1 | — | Jun 16, 2026 | ||
| John Smollen | EVP, New Product Development | 1 | — | Jun 16, 2026 | |
| Lisa Moore | 1 | — | Jun 16, 2026 | ||
| Mark Massad | 1 | — | Jun 16, 2026 | ||
| Kenneth Lozier | 1 | — | Jun 16, 2026 | ||
| Harish Jayabalan | EVP, CISO and CRO | 1 | — | Jun 16, 2026 | |
| Thomas Gallagher | Chairman & CEO | 1 | — | Jun 16, 2026 | |
| Lance Emmons | EVP and CFO | 1 | — | Jun 16, 2026 | |
| Barbara Comly | EVP, GC & Corporate Secretary | 1 | — | Jun 16, 2026 | |
| Al-Bahar Talal Jassim | 1 | — | Jun 16, 2026 |
Frequently asked questions
Are MIAX insiders buying or selling?
Over the last 12 months 0 insiders made 0 open-market purchases worth $0 and 2 insiders made 2 open-market sales worth $1.54M, a net -$1.54M.
What is the latest insider trade in MIAX?
Schafer Douglas M. JR, EVP and CIO filed a sell (open-market sale) of 40K sh worth $1.33M on Oct 2, 2026.
Other capital markets stocks
Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.
Get a text when insiders, Congress or big funds trade a stock.
Free. Reply STOP anytime.