Comly Barbara J. 4

Accession 0001628280-25-040787

CIK 0001438472other

View on SEC.gov Company Profile

Filed

Aug 18, 8:00 PM ET

Accepted

Aug 19, 4:06 PM ET

Size

48.9 KB

Accession

0001628280-25-040787

Insider Transaction Report

Form 4

Period: 2025-08-15

MIAMI INTERNATIONAL HOLDINGS, INC.MIAX

Comly Barbara J.

EVP, GC & Corporate Secretary

Transactions

Exercise/Conversion
Incentive Stock Option (Right to Buy)
2025-08-15−8,333→ 0 total
Exercise: $12.00Exp: 2026-08-02→ Nonvoting Common Stock (8,333 underlying)
Exercise/Conversion
Incentive Stock Option (Right to Buy)
2025-08-15+13,140→ 13,140 total
Exercise: $15.22Exp: 2031-01-27→ Common Stock (13,140 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
2025-08-15+141,667→ 141,667 total
Exercise: $12.00Exp: 2026-08-02→ Common Stock (141,667 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
2025-08-15−136,860→ 0 total
Exercise: $15.22Exp: 2031-01-27→ Nonvoting Common Stock (136,860 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
2025-08-15+136,860→ 136,860 total
Exercise: $15.22Exp: 2031-01-27→ Common Stock (136,860 underlying)
Exercise/Conversion
Incentive Stock Option (Right to Buy)
2025-08-15−16,666→ 0 total
Exercise: $12.00Exp: 2028-05-28→ Nonvoting Common Stock (16,666 underlying)
Exercise/Conversion
Incentive Stock Option (Right to Buy)
2025-08-15−13,140→ 0 total
Exercise: $15.22Exp: 2031-01-27→ Nonvoting Common Stock (13,140 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
2025-08-15−141,667→ 0 total
Exercise: $12.00Exp: 2026-08-02→ Nonvoting Common Stock (141,667 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
2025-08-15−133,334→ 0 total
Exercise: $12.00Exp: 2028-05-28→ Nonvoting Common Stock (133,334 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
2025-08-15+150,000→ 150,000 total
Exercise: $16.14Exp: 2031-09-09→ Common Stock (150,000 underlying)
Conversion
Common Stock
2025-08-15+100,500→ 811,960 total
Conversion
Series B Preferred Stock
2025-08-15−100,500→ 0 total
→ Common Stock (100,500 underlying)
Conversion
Nonvoting Common Stock
2025-08-15−130,617→ 0 total
→ Common Stock (130,617 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
2025-08-15−150,000→ 0 total
Exercise: $16.14Exp: 2031-09-09→ Nonvoting Common Stock (150,000 underlying)
Exercise/Conversion
Incentive Stock Option (Right to Buy)
2025-08-15+16,666→ 16,666 total
Exercise: $12.00Exp: 2028-05-28→ Common Stock (16,666 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
2025-08-15−141,667→ 0 total
Exercise: $12.00Exp: 2029-07-31→ Nonvoting Common Stock (141,667 underlying)
Conversion
Common Stock
2025-08-15+130,617→ 811,960 total
Exercise/Conversion
Incentive Stock Option (Right to Buy)
2025-08-15+8,333→ 8,333 total
Exercise: $12.00Exp: 2026-08-02→ Common Stock (8,333 underlying)
Exercise/Conversion
Incentive Stock Option (Right to Buy)
2025-08-15−8,333→ 0 total
Exercise: $12.00Exp: 2029-07-31→ Nonvoting Common Stock (8,333 underlying)
Exercise/Conversion
Incentive Stock Option (Right to Buy)
2025-08-15+8,333→ 8,333 total
Exercise: $12.00Exp: 2029-07-31→ Common Stock (8,333 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
2025-08-15+133,334→ 133,334 total
Exercise: $12.00Exp: 2028-05-28→ Common Stock (133,334 underlying)
Exercise/Conversion
Nonqualified Stock Option (Right to Buy)
2025-08-15+141,667→ 141,667 total
Exercise: $12.00Exp: 2029-07-31→ Common Stock (141,667 underlying)

Footnotes (4)

[F1]Represents 100,500 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.
[F2]Represents 130,617 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.
[F3]The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the IPO, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.
[F4]The options are fully vested.

Documents

1 file

4
wk-form4_1755633977.xmlPrimary
FORM 4

Issuer

MIAMI INTERNATIONAL HOLDINGS, INC.

CIK 0001438472

→

Entity typeother

Related Parties

filerCIK 0002080878

Filing Metadata

Form type: 4
Filed: Aug 18, 8:00 PM ET
Accepted: Aug 19, 4:06 PM ET
Size: 48.9 KB

View on SEC.gov