Form 4 for MIAX MIAMI INTERNATIONAL HOLDINGS, INC.
Accepted 2025-08-19 00:00:00 ET · period of report 2025-08-15 · accession 0001628280-25-040795 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DI | 2025-08-19 | 2025-08-15 | MIAX | Smollen John | EVP Traded Products, Relation | C - Cnv Deriv | — | +91.7K | 91.7K | New | — |
| D | 2025-08-19 | 2025-08-15 | MIAX | Smollen John | EVP Traded Products, Relation | C - Cnv Deriv | — | +73.2K | 68.2K | New | — |
| DM | 2025-08-19 | 2025-08-15 | MIAX | Smollen John | EVP Traded Products, Relation | M - OptEx | $0.00 | 0 | 0 | New | $0 |
| DI | 2025-08-19 | 2025-08-15 | MIAX | Smollen John | EVP Traded Products, Relation | C - Cnv Deriv | $0.00 | -91.7K | 0 | -100% | $0 |
| D | 2025-08-19 | 2025-08-15 | MIAX | Smollen John | EVP Traded Products, Relation | C - Cnv Deriv | $0.00 | -65.9K | 0 | -100% | $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 | 91,666 | — | 91,666 | I | — | — | (F2) Represents 91,666 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 IPO and which have no expiration date. |
| 2 | Common | Common Stock | 2025-08-15 | C | A | 73,173 | — | 68,173 | D Held by Quivetneck Capital LLC of which Mr. Smollen is a managing member | — | — | (F1) Includes 65,947 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 initial public offering ("IPO") and which have no expiration date. |
| 3 | Derivative | Incentive Stock Option (Right to Buy) | 2025-08-15 | M | A | 6,570 | $0.00 | 6,570 | D | $15.22 · — to 2030-11-30 | 6,570 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 4 | Derivative | Incentive Stock Option (Right to Buy) | 2025-08-15 | M | D | 6,570 | $0.00 | 0 | D | $15.22 · — to 2030-11-30 | 6,570 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 5 | Derivative | Incentive Stock Option (Right to Buy) | 2025-08-15 | M | A | 7,757 | $0.00 | 7,757 | D | $25.78 · — to 2032-03-09 | 7,757 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 6 | Derivative | Nonqualified Stock Option (Right to Buy) | 2025-08-15 | M | D | 125,001 | $0.00 | 0 | D | $12.00 · — to 2025-09-17 | 125,001 Series B Preferred Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 7 | Derivative | Nonqualified Stock Option (Right to Buy) | 2025-08-15 | M | A | 125,001 | $0.00 | 125,001 | D | $12.00 · — to 2025-09-17 | 125,001 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 8 | Derivative | Nonqualified Stock Option (Right to Buy) | 2025-08-15 | M | D | 75,001 | $0.00 | 0 | D | $12.00 · — to 2028-05-17 | 75,001 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 9 | Derivative | Nonqualified Stock Option (Right to Buy) | 2025-08-15 | M | A | 75,001 | $0.00 | 75,001 | D | $12.00 · — to 2028-05-17 | 75,001 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 10 | Derivative | Nonqualified Stock Option (Right to Buy) | 2025-08-15 | M | D | 104,167 | $0.00 | 0 | D | $12.00 · — to 2029-07-31 | 104,167 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 11 | Derivative | Nonqualified Stock Option (Right to Buy) | 2025-08-15 | M | A | 104,167 | $0.00 | 104,167 | D | $12.00 · — to 2029-07-31 | 104,167 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 12 | Derivative | Nonqualified Stock Option (Right to Buy) | 2025-08-15 | M | D | 80,930 | $0.00 | 0 | D | $15.22 · — to 2030-11-30 | 80,930 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 13 | Derivative | Nonqualified Stock Option (Right to Buy) | 2025-08-15 | M | A | 80,930 | $0.00 | 80,930 | D | $15.22 · — to 2030-11-30 | 80,930 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 14 | Derivative | Nonqualified Stock Option (Right to Buy) | 2025-08-15 | M | D | 29,743 | $0.00 | 0 | D | $25.78 · — to 2032-03-09 | 29,743 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 15 | Derivative | Nonqualified Stock Option (Right to Buy) | 2025-08-15 | M | A | 29,743 | $0.00 | 29,743 | D | $25.78 · — to 2032-03-09 | 29,743 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 16 | Derivative | Series B Preferred Stock | 2025-08-15 | C | D | 91,666 | $0.00 | 0 | I Held by Quivetneck Capital LLC of which Mr. Smollen is a managing member | — · — to — | 91,666 Common Stock | (F2) Represents 91,666 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 IPO and which have no expiration date. |
| 17 | Derivative | Nonvoting Common Stock | 2025-08-15 | C | D | 65,947 | $0.00 | 0 | D | — · — to — | 65,947 Common Stock | (F1) Includes 65,947 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 initial public offering ("IPO") and which have no expiration date. |
| 18 | Derivative | Incentive Stock Option (Right to Buy) | 2025-08-15 | M | D | 24,999 | $0.00 | 0 | D | $12.00 · — to 2025-09-17 | 24,999 Series B Preferred Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 19 | Derivative | Incentive Stock Option (Right to Buy) | 2025-08-15 | M | A | 24,999 | $0.00 | 24,999 | D | $12.00 · — to 2025-09-17 | 24,999 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 20 | Derivative | Incentive Stock Option (Right to Buy) | 2025-08-15 | M | D | 24,999 | $0.00 | 0 | D | $12.00 · — to 2028-05-17 | 24,999 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 21 | Derivative | Incentive Stock Option (Right to Buy) | 2025-08-15 | M | A | 24,999 | $0.00 | 24,999 | D | $12.00 · — to 2028-05-17 | 24,999 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 22 | Derivative | Incentive Stock Option (Right to Buy) | 2025-08-15 | M | D | 8,333 | $0.00 | 0 | D | $12.00 · — to 2029-07-31 | 8,333 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 23 | Derivative | Incentive Stock Option (Right to Buy) | 2025-08-15 | M | A | 8,333 | $0.00 | 8,333 | D | $12.00 · — to 2029-07-31 | 8,333 Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |
| 24 | Derivative | Incentive Stock Option (Right to Buy) | 2025-08-15 | M | D | 7,757 | $0.00 | 0 | D | $25.78 · — to 2032-03-09 | 7,757 Nonvoting Common Stock | (F3) The options were granted initially as the right to buy Nonvoting Common Stock or Series B Preferred Stock, as applicable. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock or Series B Preferred Stock, as applicable, for the same price and under the same conditions. (F4) The options are fully vested. |