Form 4 for MIAX MIAMI INTERNATIONAL HOLDINGS, INC.
Accepted 2026-06-18 16:13:45 ET · period of report 2026-06-16 · accession 0002080477-26-000012 · 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 | 2026-06-18 16:13 | 2026-06-16 | MIAX | Gallagher Thomas P. | COB, CEO, Dir | A - Grant | $0.00 | +233.0K | 743.9K | +46% | $0 |
| DM | 2026-06-18 16:13 | 2026-06-16 | MIAX | Gallagher Thomas P. | COB, CEO, Dir | A - Grant | $0.00 | +239.7K | 237.2K | New | $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 | 2026-06-16 | A | A | 232,977 | $0.00 | 743,939 | D | — | — | (F1) The amount represents restricted stock units ("RSUs") that vest as to 77,659 on June 16, 2027, 77,659 on June 16, 2028 and the remaining 77,659 on June 16, 2029, subject to the Reporting Person's continued service to the Issuer or its subsidiaries through the applicable vesting date. |
| 2 | Derivative | Incentive Stock Option (Right to Buy) | 2026-06-16 | A | A | 2,485 | $0.00 | 2,485 | D | $40.24 · — to 2036-06-15 | 2,485 Common Stock | (F2) 829 of the shares subject to this option will vest on June 16, 2027, 828 of the shares subject to this option will vest on June 16, 2028 and the remaining 828 of the shares subject to this option will vest on June 16, 2029, subject to the Reporting Person's continued service to the Issuer or its subsidiaries through the applicable vesting date. |
| 3 | Derivative | Nonqualified Stock Option (Right to Buy) | 2026-06-16 | A | A | 237,175 | $0.00 | 237,175 | D | $40.24 · — to 2036-06-15 | 237,175 Common Stock | (F3) 79,059 of the shares subject to this option will vest on June 16, 2027, 79,058 of the shares subject to this option will vest on June 16, 2028 and the remaining 79,058 of the shares subject to this option will vest on June 16, 2029, subject to the Reporting Person's continued service to the Issuer or its subsidiaries through the applicable vesting date. |