Form 4 for MIAX MIAMI INTERNATIONAL HOLDINGS, INC.
Accepted 2026-04-17 16:15:46 ET · period of report 2026-04-15 · accession 0001628280-26-025749 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DT | 2026-04-17 16:15 | 2026-04-15 | MIAX | Comly Barbara J. | EVP, GC, Corp. Sec | M - OptEx | $12.00 | +29.7K | 873.5K | +4% | +$356.0K |
| DT | 2026-04-17 16:15 | 2026-04-15 | MIAX | Comly Barbara J. | EVP, GC, Corp. Sec | S - Sale+OE | $43.64 | -29.7K | 843.8K | -3% | -$1.29M |
| DT | 2026-04-17 16:15 | 2026-04-15 | MIAX | Comly Barbara J. | EVP, GC, Corp. Sec | M - OptEx | $0.00 | -29.7K | 112.0K | -21% | $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 | 2026-04-15 | M | A | 29,667 | $12.00 | 873,511 | D | — | — | (F1) This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the reporting person on December 18, 2025. |
| 2 | Common | Common Stock | 2026-04-15 | S | D | 29,667 | $43.64 | 843,844 | D | — | — | (F1) This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the reporting person on December 18, 2025. (F2) This transaction was executed in multiple trades throughout the day at prices ranging from $42.68 to $44.37. 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. |
| 3 | Derivative | Nonqualified Stock Option (Right to Buy) | 2026-04-15 | M | D | 29,667 | $0.00 | 112,000 | D | $12.00 · — to 2026-08-02 | 29,667 Common Stock | (F1) This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the reporting person on December 18, 2025. (F3) The options are fully vested. |