Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MIAMI INTERNATIONAL HOLDINGS, INC.MIAX · Entity 4026 | EVP, CISO and CRO | September 25, 2026 | September 29, 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 25, 2026 · Filed September 29, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 86,398 |
Reported balance
After 2026-09-25 transaction · row 1
1 source rowRow 1 · 2026-09-25 · Exercise / conversion · Acquired 8,333 · Balance 86,398 |
| Incentive Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $12.00 · Expires 2027-10-12 | Direct | 8,333 |
Reported balance
After 2026-09-25 transaction · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · 2026-09-25 · Exercise / conversion · Disposed 8,333 · Balance 8,333 F1: The options are fully vested. |
Filing footnotes · ownership attribution and instrument terms
F1: The options are fully vested.
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 20:06 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: 0001628280-25-040789 · wk-form4_1755633996.xml · derivative · entry 10 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 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 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 20:06 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: 0001628280-25-040789 · wk-form4_1755633996.xml · derivative · entry 9 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 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 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 20:06 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: 0001628280-25-040789 · wk-form4_1755633996.xml · derivative · entry 8 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 16,666 Underlying: Common Stock · 16,666 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 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 20:06 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: 0001628280-25-040789 · wk-form4_1755633996.xml · derivative · entry 7 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Nonvoting Common Stock · 16,666 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 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 20:06 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 21,999 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040789 · wk-form4_1755633996.xml · derivative · entry 6 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 21,999 Underlying: Common Stock · 21,999 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 20:06 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | Exercise / conversionIncentive Stock Option (Right to Buy) · Derivative | 21,999 | $0.00 Strike: $12.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040789 · wk-form4_1755633996.xml · derivative · entry 5 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Series B Preferred Stock · 21,999 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 20:06 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | ConversionNonvoting Common Stock · Derivative | 43,442 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040789 · wk-form4_1755633996.xml · derivative · entry 4 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 43,442 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 43,442 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. 4,500 of those shares are held jointly with his spouse with right of survivorship. F2 · shares: Represents 43,442 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. 4,500 of those shares are held jointly with his spouse with right of survivorship. F2 · derivative.exercise_date: Represents 43,442 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. 4,500 of those shares are held jointly with his spouse with right of survivorship. F2 · derivative.expiration_date: Represents 43,442 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. 4,500 of those shares are held jointly with his spouse with right of survivorship. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:06 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | ConversionSeries B Preferred Stock · Derivative | 500 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-040789 · wk-form4_1755633996.xml · derivative · entry 3 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 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 20:06 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | ConversionCommon Stock | 43,442 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-25-040789 · wk-form4_1755633996.xml · nonDerivative · entry 2 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 50,385 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 43,442 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. 4,500 of those shares are held jointly with his spouse with right of survivorship. F2 · price: Represents 43,442 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. 4,500 of those shares are held jointly with his spouse with right of survivorship. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 20:06 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | ConversionCommon Stock | 500 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-25-040789 · wk-form4_1755633996.xml · nonDerivative · entry 1 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 50,385 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 |
| August 13, 2025 Filed Aug 15, 2025 20:49 UTC | MIAMI INTERNATIONAL HOLDINGS, INC. MIAX · Entity 4026 | PurchaseCommon Stock | 2,500 | $23.00 | $57,500.00 |
DisclosureSEC source: 0001628280-25-040565 · wk-form4_1755290966.xml · nonDerivative · entry 1 Jayabalan Harish · CIK 0002080538 · EVP, CISO and CRO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,443 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.