MIAX: Brown Shelly discloses a sale

By AlphaYouPublished Sep 23, 2026Form 4

Stocks in this disclosure

Reported activity

Brown Shelly

Reporting filer

Brown Shelly reported Sale in MIAMI INTERNATIONAL HOLDINGS, INC.: 21217 units of Common Stock, dated 2026-09-16. The full Form 4 contains 1 transaction entry.

Disclosed: Sep 17, 2026

Reported details

1 entry

All validated entries in this disclosure
Security	Owner	Date	Code	Action	Quantity	Price	Following holdings	Reporting delay	Filed terms and references
Common Stock	Brown Shelly	2026-09-16	S	Sale	21217	38.61	316,490	1 day	Filed terms security Title: Common Stock transaction Date: 2026-09-16 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 21217 transaction Price Per Share: 38.61 id: F2 transaction Acquired Disposed Code: D shares Owned Following Transaction: 316490 direct Or Indirect Ownership: D

Common Stock

Owner: Brown Shelly
Date: 2026-09-16
Code: S
Action: Sale
Quantity: 21217
Price: 38.61
Following holdings: 316,490
Reporting delay: 1 day
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 21217
transaction Price Per Share: 38.61
id: F2
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 316490
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.
Brown Shelly: EVP, Chief Strategy Officer.
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 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.

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

Brown Shelly

2026-09-16

Sale

21217

38.61

316,490

1 day

Filed terms

security Title: Common Stock
transaction Date: 2026-09-16
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 21217
transaction Price Per Share: 38.61
id: F2
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 316490
direct Or Indirect Ownership: D

Filing context

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

Brown Shelly: EVP, Chief Strategy Officer.

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 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.