Form 4 for MIAX MIAMI INTERNATIONAL HOLDINGS, INC.
Accepted 2025-08-19 00:00:00 ET · period of report 2025-08-15 · accession 0001628280-25-040780 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2025-08-19 | 2025-08-15 | MIAX | Schwarzkopf Cynthia | Dir | C - Cnv Deriv | — | +81.3K | 81.3K | New | — |
| DM | 2025-08-19 | 2025-08-15 | MIAX | Schwarzkopf Cynthia | Dir | C - Cnv Deriv | $0.00 | -81.3K | 0 | -100% | $0 |
| DM | 2025-08-19 | 2025-08-15 | MIAX | Schwarzkopf Cynthia | Dir | M - OptEx | $0.00 | 0 | 32.5K | 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 | 2025-08-15 | C | A | 36,250 | — | 81,308 | D | — | — | (F1) Includes 36,250 shares of Series B Preferred Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering ("IPO") and which have no expiration date. (F2) Includes 45,058 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's IPO and which have no expiration date. |
| 2 | Common | Common Stock | 2025-08-15 | C | A | 45,058 | — | 81,308 | D | — | — | (F2) Includes 45,058 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's IPO and which have no expiration date. (F1) Includes 36,250 shares of Series B Preferred Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering ("IPO") and which have no expiration date. |
| 3 | Derivative | Series B Preferred Stock | 2025-08-15 | C | D | 36,250 | $0.00 | 0 | D | — · — to — | 36,250 Common Stock | (F1) Includes 36,250 shares of Series B Preferred Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering ("IPO") and which have no expiration date. |
| 4 | Derivative | Nonvoting Common Stock | 2025-08-15 | C | D | 45,058 | $0.00 | 0 | D | — · — to — | 45,058 Common Stock | (F2) Includes 45,058 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's IPO and which have no expiration date. |
| 5 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | D | 19,500 | $0.00 | 0 | D | $12.00 · — to 2026-06-19 | 19,500 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 6 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | A | 19,500 | $0.00 | 19,500 | D | $12.00 · — to 2026-06-19 | 19,500 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 7 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | D | 21,916 | $0.00 | 0 | D | $12.00 · — to 2027-05-31 | 21,916 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 8 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | A | 21,916 | $0.00 | 21,916 | D | $12.00 · — to 2027-05-31 | 21,916 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 9 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | D | 21,250 | $0.00 | 0 | D | $12.00 · — to 2028-04-30 | 21,250 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 10 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | A | 21,250 | $0.00 | 21,250 | D | $12.00 · — to 2028-04-30 | 21,250 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 11 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | D | 22,708 | $0.00 | 0 | D | $12.00 · — to 2029-05-31 | 22,708 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 12 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | A | 22,708 | $0.00 | 22,708 | D | $12.00 · — to 2029-05-31 | 22,708 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 13 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | D | 28,437 | $0.00 | 0 | D | $14.00 · — to 2030-06-30 | 28,437 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 14 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | A | 28,437 | $0.00 | 28,437 | D | $14.00 · — to 2030-06-30 | 28,437 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 15 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | D | 32,501 | $0.00 | 0 | D | $16.14 · — to 2031-05-31 | 32,501 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |
| 16 | Derivative | Stock Option (Right to Buy) | 2025-08-15 | M | A | 32,501 | $0.00 | 32,501 | D | $16.14 · — to 2031-05-31 | 32,501 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions. (F4) The options are fully vested. |