Form 4 for MIAX MIAMI INTERNATIONAL HOLDINGS, INC.
Accepted 2026-03-18 00:00:00 ET · period of report 2026-03-17 · accession 0001628280-26-019437 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-03-18 | 2026-03-17 | MIAX | Schafer Douglas M. JR | EVP, CIO | S - Sale+OE | $39.74 | -48.0K | 396.7K | -11% | -$1.91M |
| D | 2026-03-18 | 2026-03-17 | MIAX | Schafer Douglas M. JR | EVP, CIO | M - OptEx | $12.00 | +48.0K | 444.7K | +12% | +$576.0K |
| D | 2026-03-18 | 2026-03-17 | MIAX | Schafer Douglas M. JR | EVP, CIO | M - OptEx | $0.00 | -48.0K | 102.0K | -32% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-03-17 | S | D | 48,000 | $39.74 | 396,681 | D | — | — | (F2) This transaction was executed in multiple trades throughout the day at prices ranging from $39.51 to $39.94. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected. |
| 2 | Common | Common Stock | 2026-03-17 | M | A | 48,000 | $12.00 | 444,681 | D | — | — | |
| 3 | Derivative | Nonqualified Stock Option (Right to Buy) | 2026-03-17 | M | D | 48,000 | $0.00 | 102,000 | D | $12.00 · — to 2026-08-02 | 48,000 Common Stock | (F3) The options are fully vested. |