Form 4: Miami International Holdings Executive Sells Shares
Insider Transaction (Form 4)
Douglas M. Schafer Jr, EVP and CIO of Miami International Holdings, Inc., sold 48,000 shares of common stock on September 2, 2026 for $40.48 per share.
Summary
- Option exercise/conversion: acquired 43,334 Common Stock at $12.00 ($520,008) on September 2, 2026; holds 430,748 after (Direct).
- Option exercise/conversion: acquired 4,666 Common Stock at $12.00 ($55,992) on September 2, 2026; holds 435,414 after (Direct).
- Open-market sale: disposed of 48,000 Common Stock at $40.48 ($1,943,040) on September 2, 2026; holds 387,414 after (Direct).
- Option exercise/conversion: disposed of 43,334 Nonqualified Stock Option (Right to Buy) on September 2, 2026 (Direct).
- Option exercise/conversion: disposed of 4,666 Nonqualified Stock Option (Right to Buy) on September 2, 2026; holds 195,334 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $1,943,040 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Douglas M. Schafer Jr — Officer (EVP and CIO)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-02 | Option exercise/conversion | Common Stock | 43,334 | $12 | $520.0K | 430,748 |
| 2026-09-02 | Option exercise/conversion | Common Stock | 4,666 | $12 | $56.0K | 435,414 |
| 2026-09-02 | Open-market sale | Common Stock | 48,000 | $40 | $1.9M | 387,414 |
| 2026-09-02 | Option exercise/conversion | Nonqualified Stock Option (Right to Buy) | 43,334 | — | — | 0 |
| 2026-09-02 | Option exercise/conversion | Nonqualified Stock Option (Right to Buy) | 4,666 | — | — | 195,334 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-02 | Option exercise/conversion (43,334 shares) |
| 2026-09-02 | Option exercise/conversion (4,666 shares) |
| 2026-09-02 | Open-market sale (48,000 shares) |
| 2026-09-02 | Option exercise/conversion (43,334 shares) |
| 2026-09-02 | Option exercise/conversion (4,666 shares) |
Keywords
insider transaction, Form 4, MIAX, MIAMI INTERNATIONAL HOLDINGS, INC., bearish, Douglas M. Schafer Jr
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