Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MIAMI INTERNATIONAL HOLDINGS, INC.MIAX · Entity 4026 | EVP, Chief Strategy Officer | September 16, 2026 | September 17, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
MIAMI INTERNATIONAL HOLDINGS, INC.
Report date September 16, 2026 · Filed September 17, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 316,490 |
Reported balance
After 2026-09-16 transaction · row 1
1 source rowRow 1 · 2026-09-16 · Sale · Disposed 21,217 · Balance 316,490 F1: This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 22, 2025. F2: This transaction was executed in multiple trades throughout the day at prices ranging from $37.84 to $39.56. The price reported above reflects the weighted average sales 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. |
Filing footnotes · ownership attribution and instrument terms
F1: This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 22, 2025.
F2: This transaction was executed in multiple trades throughout the day at prices ranging from $37.84 to $39.56. The price reported above reflects the weighted average sales 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.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 143,430 | $0.00 Strike: $15.22 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 28 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 143,430 Underlying: Common Stock · 143,430 shares Expires 2030-11-30 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 143,430 | $0.00 Strike: $15.22 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 27 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 143,430 shares Expires 2030-11-30 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 141,667 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 26 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 141,667 Underlying: Common Stock · 141,667 shares Expires 2029-07-31 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 141,667 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 25 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 141,667 shares Expires 2029-07-31 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 91,667 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 24 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 91,667 Underlying: Common Stock · 91,667 shares Expires 2028-05-17 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 91,667 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 23 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 91,667 shares Expires 2028-05-17 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 41,667 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 22 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 41,667 Underlying: Common Stock · 41,667 shares Expires 2027-10-12 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 41,667 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 21 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 41,667 shares Expires 2027-10-12 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 65,334 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 20 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 65,334 Underlying: Common Stock · 65,334 shares Expires 2026-08-02 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 65,334 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 19 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 65,334 shares Expires 2026-08-02 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 3,878 | $0.00 Strike: $25.78 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 18 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,878 Underlying: Common Stock · 3,878 shares Expires 2032-03-09 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 3,878 | $0.00 Strike: $25.78 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 17 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 3,878 shares Expires 2032-03-09 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 6,195 | $0.00 Strike: $16.14 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 16 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,195 Underlying: Common Stock · 6,195 shares Expires 2031-09-09 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 6,195 | $0.00 Strike: $16.14 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 15 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 6,195 shares Expires 2031-09-09 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 6,570 | $0.00 Strike: $15.22 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 14 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,570 Underlying: Common Stock · 6,570 shares Expires 2030-11-30 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 6,570 | $0.00 Strike: $15.22 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 13 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 6,570 shares Expires 2030-11-30 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 8,333 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 12 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 8,333 Underlying: Common Stock · 8,333 shares Expires 2029-07-31 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 8,333 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 11 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 8,333 shares Expires 2029-07-31 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 8,333 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 10 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 8,333 Underlying: Common Stock · 8,333 shares Expires 2028-05-17 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 8,333 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 9 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 8,333 shares Expires 2028-05-17 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 8,333 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 8 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 8,333 Underlying: Common Stock · 8,333 shares Expires 2027-10-12 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 8,333 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 7 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 8,333 shares Expires 2027-10-12 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 16,666 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 6 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 16,666 Underlying: Common Stock · 16,666 shares Expires 2026-08-02 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 16,666 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 5 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 16,666 shares Expires 2026-08-02 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: 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. F3 · shares: 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 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | ConversionNonvoting Common Stock · Derivative | 200,475 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 4 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 200,475 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: Represents 200,475 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. F2 · shares: Represents 200,475 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. F2 · derivative.exercise_date: Represents 200,475 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. F2 · derivative.expiration_date: Represents 200,475 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. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | ConversionSeries B Preferred Stock · Derivative | 500 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · derivative · entry 3 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 500 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Represents 500 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. F1 · shares: Represents 500 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. F1 · derivative.exercise_date: Represents 500 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. F1 · derivative.expiration_date: Represents 500 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. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | ConversionCommon Stock | 200,475 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · nonDerivative · entry 2 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 339,029 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · shares: Represents 200,475 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. F2 · price: Represents 200,475 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. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | ConversionCommon Stock | 500 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-25-040792 · wk-form4_1755634027.xml · nonDerivative · entry 1 Brown Shelly · CIK 0002080506 · EVP, Strat. Planning & BD 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 339,029 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · shares: Represents 500 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. F1 · price: Represents 500 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. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.