Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MIAMI INTERNATIONAL HOLDINGS, INC.MIAX · Entity 4026 | EVP, New Product Development | June 16, 2026 | June 18, 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 June 16, 2026 · Filed June 18, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 178,212 |
Reported balance
After 2026-06-16 transaction · row 1
1 source rowRow 1 · 2026-06-16 · Grant · Acquired 7,455 · Balance 178,212 F1: The amount represents restricted stock units ("RSUs") that vest as to 2,485 on June 16, 2027, 2,485 on June 16, 2028 and the remaining 2,485 on June 16, 2029, subject to the Reporting Person's continued service to the Issuer or its subsidiaries through each applicable vesting date. |
| Incentive Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $40.24 · Expires 2036-06-15 | Direct | 2,485 |
Reported balance
After 2026-06-16 transaction · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · 2026-06-16 · Grant · Acquired 2,485 · Balance 2,485 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. |
| Nonqualified Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $40.24 · Expires 2036-06-15 | Direct | 5,184 |
Reported balance
After 2026-06-16 transaction · row 3
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 3 · 2026-06-16 · Grant · Acquired 5,184 · Balance 5,184 F3: 1,728 of the shares subject to this option will vest on June 16, 2027, 1,728 of the shares subject to this option will vest on June 16, 2028 and the remaining 1,728 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. |
Filing footnotes · ownership attribution and instrument terms
F1: The amount represents restricted stock units ("RSUs") that vest as to 2,485 on June 16, 2027, 2,485 on June 16, 2028 and the remaining 2,485 on June 16, 2029, subject to the Reporting Person's continued service to the Issuer or its subsidiaries through each applicable vesting date.
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.
F3: 1,728 of the shares subject to this option will vest on June 16, 2027, 1,728 of the shares subject to this option will vest on June 16, 2028 and the remaining 1,728 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.
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 |
|---|---|---|---|---|---|---|
| June 16, 2026 Filed Jun 18, 2026 20:26 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | GrantNonqualified Stock Option (Right to Buy) · Derivative | 5,184 | $0.00 Strike: $40.24 | $0.00 |
DisclosureSEC source: 0002080703-26-000004 · wk-form4_1781814391.xml · derivative · entry 3 Smollen John · CIK 0002080703 · EVP, New Product Development 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,184 Underlying: Common Stock · 5,184 shares Expires 2036-06-15 F3 · derivative.exercise_date: 1,728 of the shares subject to this option will vest on June 16, 2027, 1,728 of the shares subject to this option will vest on June 16, 2028 and the remaining 1,728 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. Read SEC document |
| June 16, 2026 Filed Jun 18, 2026 20:26 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | GrantIncentive Stock Option (Right to Buy) · Derivative | 2,485 | $0.00 Strike: $40.24 | $0.00 |
DisclosureSEC source: 0002080703-26-000004 · wk-form4_1781814391.xml · derivative · entry 2 Smollen John · CIK 0002080703 · EVP, New Product Development 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,485 Underlying: Common Stock · 2,485 shares Expires 2036-06-15 F2 · derivative.exercise_date: 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. Read SEC document |
| June 16, 2026 Filed Jun 18, 2026 20:26 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | GrantCommon Stock | 7,455 | $0.00 | $0.00 |
DisclosureSEC source: 0002080703-26-000004 · wk-form4_1781814391.xml · nonDerivative · entry 1 Smollen John · CIK 0002080703 · EVP, New Product Development 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 178,212 F1 · shares: The amount represents restricted stock units ("RSUs") that vest as to 2,485 on June 16, 2027, 2,485 on June 16, 2028 and the remaining 2,485 on June 16, 2029, subject to the Reporting Person's continued service to the Issuer or its subsidiaries through each applicable vesting date. Read SEC document |
| March 30, 2026 Filed Apr 1, 2026 20:48 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Tax withholdingCommon Stock | 362 | $37.50 | $13,575.00 |
DisclosureSEC source: 0002080703-26-000002 · wk-form4_1775076485.xml · nonDerivative · entry 1 Smollen John · CIK 0002080703 · EVP, New Product Development 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 170,757 F1 · shares: Represents shares that have been surrendered to the Company to satisfy tax withholding and remittance obligations in connection with the net settlement of restricted stock awards and does not represent a sale by the reporting person. F2 · balance_after: Reflects a correction to a clerical error in the Reporting Person's previous filings as to the amount of securities beneficially owned. Read SEC document |
| September 11, 2025 Filed Sep 15, 2025 21:14 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 24,999 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0002080703-25-000002 · wk-form4_1757970842.xml · derivative · entry 5 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 24,999 shares Expires 2025-09-17 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. F2 · derivative.exercise_date: The options are fully vested. Read SEC document |
| September 11, 2025 Filed Sep 15, 2025 21:14 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionNonqualified Stock Option (Right to Buy) · Derivative | 125,001 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0002080703-25-000002 · wk-form4_1757970842.xml · derivative · entry 4 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 125,001 shares Expires 2025-09-17 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. F2 · derivative.exercise_date: The options are fully vested. Read SEC document |
| September 11, 2025 Filed Sep 15, 2025 21:14 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionCommon Stock | 24,999 | $12.00 | $299,988.00 |
DisclosureSEC source: 0002080703-25-000002 · wk-form4_1757970842.xml · nonDerivative · entry 3 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 166,119 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. Read SEC document |
| September 11, 2025 Filed Sep 15, 2025 21:14 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Tax withholdingCommon Stock | 52,054 | $37.39 | $1,946,299.06 |
DisclosureSEC source: 0002080703-25-000002 · wk-form4_1757970842.xml · nonDerivative · entry 2 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 141,120 F1 · shares: Represents shares that have been surrendered to the Company to satisfy tax withholding and remittance obligations in connection with the net settlement of options exercised and does not represent a sale by the reporting person. Read SEC document |
| September 11, 2025 Filed Sep 15, 2025 21:14 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionCommon Stock | 125,001 | $12.00 | $1,500,012.00 |
DisclosureSEC source: 0002080703-25-000002 · wk-form4_1757970842.xml · nonDerivative · entry 1 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 193,174 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. 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 | 29,743 | $0.00 Strike: $25.78 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 24 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 29,743 Underlying: Common Stock · 29,743 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 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. F3 · shares: 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 · 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 | 29,743 | $0.00 Strike: $25.78 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 23 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 29,743 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 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. F3 · shares: 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 · 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 | 80,930 | $0.00 Strike: $15.22 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 22 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 80,930 Underlying: Common Stock · 80,930 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 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. F3 · shares: 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 · 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 | 80,930 | $0.00 Strike: $15.22 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 21 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 80,930 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 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. F3 · shares: 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 · 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 | 104,167 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 20 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 104,167 Underlying: Common Stock · 104,167 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 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. F3 · shares: 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 · 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 | 104,167 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 19 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 104,167 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 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. F3 · shares: 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 · 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 | 75,001 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 18 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 75,001 Underlying: Common Stock · 75,001 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 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. F3 · shares: 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 · 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 | 75,001 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 17 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 75,001 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 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. F3 · shares: 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 · 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 | 125,001 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 16 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 125,001 Underlying: Common Stock · 125,001 shares Expires 2025-09-17 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 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. F3 · shares: 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 · 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 | 125,001 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 15 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Series B Preferred Stock · 125,001 shares Expires 2025-09-17 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 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. F3 · shares: 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 · 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 | 7,757 | $0.00 Strike: $25.78 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 14 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,757 Underlying: Common Stock · 7,757 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 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. F3 · shares: 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 · 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 | 7,757 | $0.00 Strike: $25.78 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 13 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 7,757 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 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. F3 · shares: 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 · 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: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 12 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 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 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. F3 · shares: 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 · 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: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 11 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 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 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. F3 · shares: 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 · 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: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 10 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 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 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. F3 · shares: 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 · 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: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 9 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 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 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. F3 · shares: 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 · 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 | 24,999 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 8 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 24,999 Underlying: Common Stock · 24,999 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 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. F3 · shares: 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 · 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 | 24,999 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 7 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 24,999 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 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. F3 · shares: 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 · 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 | 24,999 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 6 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 24,999 Underlying: Common Stock · 24,999 shares Expires 2025-09-17 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 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. F3 · shares: 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 · 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 | 24,999 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 5 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Series B Preferred Stock · 24,999 shares Expires 2025-09-17 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 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. F3 · shares: 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 · 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 | 65,947 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 4 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 65,947 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: 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. F1 · shares: 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. F1 · derivative.exercise_date: 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. F1 · derivative.expiration_date: 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. 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 | 91,666 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · derivative · entry 3 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Indirect · Held by Quivetneck Capital LLC of which Mr. Smollen is a managing member Disclosed balance after: 0 Underlying: Common Stock · 91,666 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 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. F2 · shares: 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. F2 · derivative.exercise_date: 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. F2 · derivative.expiration_date: 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. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | ConversionCommon Stock | 91,666 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · nonDerivative · entry 2 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Indirect · Held by Quivetneck Capital LLC of which Mr. Smollen is a managing member Disclosed balance after: 91,666 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 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. F2 · price: 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. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:07 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | ConversionCommon Stock | 73,173 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-25-040795 · wk-form4_1755634051.xml · nonDerivative · entry 1 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 68,173 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: 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. F1 · price: 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. Read SEC document |
| August 13, 2025 Filed Aug 15, 2025 20:48 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | PurchaseCommon Stock | 5,000 | $23.00 | $115,000.00 |
DisclosureSEC source: 0001628280-25-040559 · wk-form4_1755290920.xml · nonDerivative · entry 1 Smollen John · CIK 0002080703 · EVP Traded Products & Relation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,226 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.