Barbara Comly sold $2.8M of MIAX stock

By AlphaYouPublished Nov 5, 2026Form 4

Stocks in this disclosure

Reported activity

Comly Barbara J.

Reporting filer

Barbara Comly reported selling 79,361 shares of Miami International Holdings, Inc. for about $2.8M ($35.08 a share on average). Form 4 filed Nov 4, 2026 lists 8 entries.

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Disclosed: Nov 4, 2026

Reported details

8 entries

All validated entries in this disclosure
Security	Owner	Date	Code	Action	Quantity	Price	Following holdings	Reporting delay	Filed terms and references
Common Stock	Comly Barbara J.	2026-11-02	M	Exercise or conversion	23339	12	862,903	2 days	Filed terms security Title: Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: M equity Swap Involved: 0 id: F1 transaction Shares: 23339 transaction Price Per Share: 12 transaction Acquired Disposed Code: A shares Owned Following Transaction: 862903 direct Or Indirect Ownership: D
Common Stock	Comly Barbara J.	2026-11-02	S	Sale	23339	35.10	839,564	2 days	Filed terms security Title: Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 23339 transaction Price Per Share: 35.10 id: F2 transaction Acquired Disposed Code: D shares Owned Following Transaction: 839564 direct Or Indirect Ownership: D
Common Stock	Comly Barbara J.	2026-11-04	M	Exercise or conversion	8799	12	848,363	0 days	Filed terms security Title: Common Stock transaction Date: 2026-11-04 transaction Form Type: 4 transaction Code: M equity Swap Involved: 0 id: F1 transaction Shares: 8799 transaction Price Per Share: 12 transaction Acquired Disposed Code: A shares Owned Following Transaction: 848363 direct Or Indirect Ownership: D
Common Stock	Comly Barbara J.	2026-11-04	M	Exercise or conversion	47223	12	895,586	0 days	Filed terms security Title: Common Stock transaction Date: 2026-11-04 transaction Form Type: 4 transaction Code: M equity Swap Involved: 0 id: F1 transaction Shares: 47223 transaction Price Per Share: 12 transaction Acquired Disposed Code: A shares Owned Following Transaction: 895586 direct Or Indirect Ownership: D
Common Stock	Comly Barbara J.	2026-11-04	S	Sale	56022	35.07	839,564	0 days	Filed terms security Title: Common Stock transaction Date: 2026-11-04 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 56022 transaction Price Per Share: 35.07 id: F3 transaction Acquired Disposed Code: D shares Owned Following Transaction: 839564 direct Or Indirect Ownership: D
Nonqualified Stock Option (Right to Buy) (derivative)	Comly Barbara J.	2026-11-02	M	Exercise or conversion	23339	0	8,799	2 days	Filed terms security Title: Nonqualified Stock Option (Right to Buy) conversion Or Exercise Price: 12 transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: M equity Swap Involved: 0 id: F1 transaction Shares: 23339 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F4 expiration Date: 2028-05-28 underlying Security Title: Common Stock underlying Security Shares: 23339 shares Owned Following Transaction: 8799 direct Or Indirect Ownership: D
Nonqualified Stock Option (Right to Buy) (derivative)	Comly Barbara J.	2026-11-04	M	Exercise or conversion	8799	0	0	0 days	Filed terms security Title: Nonqualified Stock Option (Right to Buy) conversion Or Exercise Price: 12 transaction Date: 2026-11-04 transaction Form Type: 4 transaction Code: M equity Swap Involved: 0 id: F1 transaction Shares: 8799 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F4 expiration Date: 2028-05-28 underlying Security Title: Common Stock underlying Security Shares: 8799 shares Owned Following Transaction: 0 direct Or Indirect Ownership: D
Nonqualified Stock Option (Right to Buy) (derivative)	Comly Barbara J.	2026-11-04	M	Exercise or conversion	47223	0	94,444	0 days	Filed terms security Title: Nonqualified Stock Option (Right to Buy) conversion Or Exercise Price: 12 transaction Date: 2026-11-04 transaction Form Type: 4 transaction Code: M equity Swap Involved: 0 id: F1 transaction Shares: 47223 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F4 expiration Date: 2029-07-31 underlying Security Title: Common Stock underlying Security Shares: 47223 shares Owned Following Transaction: 94444 direct Or Indirect Ownership: D

Common Stock

Owner: Comly Barbara J.
Date: 2026-11-02
Code: M
Action: Exercise or conversion
Quantity: 23339
Price: 12
Following holdings: 862,903
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 23339
transaction Price Per Share: 12
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 862903
direct Or Indirect Ownership: D

Common Stock

Owner: Comly Barbara J.
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 23339
Price: 35.10
Following holdings: 839,564
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 23339
transaction Price Per Share: 35.10
id: F2
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 839564
direct Or Indirect Ownership: D

Common Stock

Owner: Comly Barbara J.
Date: 2026-11-04
Code: M
Action: Exercise or conversion
Quantity: 8799
Price: 12
Following holdings: 848,363
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-11-04
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 8799
transaction Price Per Share: 12
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 848363
direct Or Indirect Ownership: D

Common Stock

Owner: Comly Barbara J.
Date: 2026-11-04
Code: M
Action: Exercise or conversion
Quantity: 47223
Price: 12
Following holdings: 895,586
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-11-04
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 47223
transaction Price Per Share: 12
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 895586
direct Or Indirect Ownership: D

Common Stock

Owner: Comly Barbara J.
Date: 2026-11-04
Code: S
Action: Sale
Quantity: 56022
Price: 35.07
Following holdings: 839,564
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-11-04
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 56022
transaction Price Per Share: 35.07
id: F3
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 839564
direct Or Indirect Ownership: D

Nonqualified Stock Option (Right to Buy) (derivative)

Owner: Comly Barbara J.
Date: 2026-11-02
Code: M
Action: Exercise or conversion
Quantity: 23339
Price: 0
Following holdings: 8,799
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Nonqualified Stock Option (Right to Buy)
conversion Or Exercise Price: 12
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 23339
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F4
expiration Date: 2028-05-28
underlying Security Title: Common Stock
underlying Security Shares: 23339
shares Owned Following Transaction: 8799
direct Or Indirect Ownership: D

Nonqualified Stock Option (Right to Buy) (derivative)

Owner: Comly Barbara J.
Date: 2026-11-04
Code: M
Action: Exercise or conversion
Quantity: 8799
Price: 0
Following holdings: 0
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Nonqualified Stock Option (Right to Buy)
conversion Or Exercise Price: 12
transaction Date: 2026-11-04
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 8799
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F4
expiration Date: 2028-05-28
underlying Security Title: Common Stock
underlying Security Shares: 8799
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Nonqualified Stock Option (Right to Buy) (derivative)

Owner: Comly Barbara J.
Date: 2026-11-04
Code: M
Action: Exercise or conversion
Quantity: 47223
Price: 0
Following holdings: 94,444
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Nonqualified Stock Option (Right to Buy)
conversion Or Exercise Price: 12
transaction Date: 2026-11-04
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 47223
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F4
expiration Date: 2029-07-31
underlying Security Title: Common Stock
underlying Security Shares: 47223
shares Owned Following Transaction: 94444
direct Or Indirect Ownership: D

Purchases, sales, grants and option exercises are different transactions. The reported code identifies the action; it does not establish a motive.

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.
Comly Barbara J.: EVP, GC & Corporate Secretary.
The filing reports a Rule 10b5-1 trading plan.
F1: This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 18, 2025.
F2: This transaction was executed in multiple trades throughout the day at prices ranging from $35.00 to $35.23. 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.
F3: This transaction was executed in multiple trades throughout the day at prices ranging from $35.00 to $35.27. 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.
F4: The options are fully vested.

Original sources

SEC ownership filing

Prepared automatically from public filing data. Report a correction.

Security

Owner

Date

Code

Action

Quantity

Price

Following holdings

Reporting delay

Filed terms and references

Common Stock

Comly Barbara J.

2026-11-02

Exercise or conversion

23339

862,903

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 23339
transaction Price Per Share: 12
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 862903
direct Or Indirect Ownership: D

Common Stock

Comly Barbara J.

2026-11-02

Sale

23339

35.10

839,564

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 23339
transaction Price Per Share: 35.10
id: F2
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 839564
direct Or Indirect Ownership: D

Common Stock

Comly Barbara J.

2026-11-04

Exercise or conversion

8799

848,363

0 days

Filed terms

security Title: Common Stock
transaction Date: 2026-11-04
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 8799
transaction Price Per Share: 12
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 848363
direct Or Indirect Ownership: D

Common Stock

Comly Barbara J.

2026-11-04

Exercise or conversion

47223

895,586

0 days

Filed terms

security Title: Common Stock
transaction Date: 2026-11-04
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 47223
transaction Price Per Share: 12
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 895586
direct Or Indirect Ownership: D

Common Stock

Comly Barbara J.

2026-11-04

Sale

56022

35.07

839,564

0 days

Filed terms

security Title: Common Stock
transaction Date: 2026-11-04
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 56022
transaction Price Per Share: 35.07
id: F3
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 839564
direct Or Indirect Ownership: D

Nonqualified Stock Option (Right to Buy) (derivative)

Comly Barbara J.

2026-11-02

Exercise or conversion

23339

8,799

2 days

Filed terms

security Title: Nonqualified Stock Option (Right to Buy)
conversion Or Exercise Price: 12
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 23339
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F4
expiration Date: 2028-05-28
underlying Security Title: Common Stock
underlying Security Shares: 23339
shares Owned Following Transaction: 8799
direct Or Indirect Ownership: D

Nonqualified Stock Option (Right to Buy) (derivative)

Comly Barbara J.

2026-11-04

Exercise or conversion

8799

0 days

Filed terms

security Title: Nonqualified Stock Option (Right to Buy)
conversion Or Exercise Price: 12
transaction Date: 2026-11-04
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 8799
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F4
expiration Date: 2028-05-28
underlying Security Title: Common Stock
underlying Security Shares: 8799
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Nonqualified Stock Option (Right to Buy) (derivative)

Comly Barbara J.

2026-11-04

Exercise or conversion

47223

94,444

0 days

Filed terms

security Title: Nonqualified Stock Option (Right to Buy)
conversion Or Exercise Price: 12
transaction Date: 2026-11-04
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 47223
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F4
expiration Date: 2029-07-31
underlying Security Title: Common Stock
underlying Security Shares: 47223
shares Owned Following Transaction: 94444
direct Or Indirect Ownership: D

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.

Comly Barbara J.: EVP, GC & Corporate Secretary.

The filing reports a Rule 10b5-1 trading plan.

F1: This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 18, 2025.

F2: This transaction was executed in multiple trades throughout the day at prices ranging from $35.00 to $35.23. 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.

F3: This transaction was executed in multiple trades throughout the day at prices ranging from $35.00 to $35.27. 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.

F4: The options are fully vested.