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Insider ActivityMIAX
Schafer Douglas M. JR, EVP and CIO at MIAMI INTERNATIONAL HOLDINGS, INC., sold $2.3M of MIAX
Updated Jun 14, 2026
Schafer Douglas M. JR
EVP and CIO
MIAMI INTERNATIONAL HOLDINGS, INC. ·
$MIAX
Transaction Details
| Insider | Schafer Douglas M. JR |
|---|---|
| Title | EVP and CIO |
| Company | MIAMI INTERNATIONAL HOLDINGS, INC. |
| Ticker | MIAX |
| Transaction Type | Sale |
| Transaction Date | 2026-05-04 |
| Shares Traded | 48,000 |
| Price Per Share | $47.25 |
| Total Value | $2.3M |
| Filed Date | 2026-05-05 |
| Accession Number | 0002079445-26-000007 |
Ownership Context
| Shares Owned After Transaction | 396,681 |
|---|---|
| Ownership Type | Direct |
SEC Filing
Accession: 0002079445-26-000007
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 Schafer Douglas M. JR
| Ticker | Company | Action | Value | Date |
|---|---|---|---|---|
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | traded | $1.3M | 2026-06-11 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | traded | $576K | 2026-06-02 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | sold | $2.1M | 2026-06-02 |
| MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | traded | $576K | 2026-05-04 |
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 07:13 UTC