MIAX insider files Form 144 to sell 16,000 shares

MIAX reporting person Shelly Brown submitted a Form 144 disclosing proposed and recent sales of common stock.

Rhea-AI Filing Summary

MIAX reporting person Shelly Brown submitted a Form 144 disclosing proposed and recent sales of common stock. The Form lists a proposed sale of 16,000 shares via exercise-of-options settlement on 07/06/2026 and multiple 10b5-1 sale transactions during April–June 2026.

Insights

Compliance / Insider Transactions Analyst

Routine Form 144 notice showing scheduled and prior 10b5-1 sales by an insider.

The filing records a proposed disposition of 16,000 shares dated 07/06/2026 described as resulting from an exercise of stock options and settled in cash. It also lists prior 10b5-1 sales of 4,714, 16,000, 16,000, 16,434, and 900 shares between 04/07/2026 and 06/15/2026.

These entries are procedural disclosures of insider sales under a pre-arranged 10b5-1 plan and an options exercise; cash-flow recipients and total post-transaction holdings are not stated in the excerpt. Subsequent filings or broker confirmations would show settlement details and any remaining holdings.

Key Figures

Proposed sale: 16,000 shares 10b5-1 sale (Jun 15): 4,714 shares 10b5-1 sale (Jun 2): 16,000 shares +3 more

6 metrics

Proposed sale 16,000 shares Exercise of stock options on 07/06/2026

10b5-1 sale (Jun 15) 4,714 shares Sale dated 06/15/2026, proceeds <money>$208,491.73</money>

10b5-1 sale (Jun 2) 16,000 shares Sale dated 06/02/2026, proceeds <money>$673,961.60</money>

10b5-1 sale (May 4) 16,000 shares Sale dated 05/04/2026, proceeds <money>$756,491.20</money>

10b5-1 sale (Apr 8) 16,434 shares Sale dated 04/08/2026, proceeds <money>$691,467.12</money>

10b5-1 sale (Apr 7) 900 shares Sale dated 04/07/2026, proceeds <money>$37,800.00</money>

Key Terms

Form 144, 10b5-1 plan, Exercise of Stock Options

3 terms

Form 144 regulatory

"Form 144 disclosing proposed and recent sales of common stock"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

10b5-1 plan regulatory

"10b5-1 Sales for SHELLY BROWN listed between 04/07/2026 and 06/15/2026"

A 10b5-1 plan is a pre-arranged strategy that allows company insiders to buy or sell their shares at predetermined times and prices, even while they are aware of confidential information. It acts like a scheduled appointment for trading, helping ensure transactions happen transparently and legally, which can reassure investors that trades are not based on insider knowledge.

Exercise of Stock Options financial

"07/06/2026 | Exercise of Stock Options | Issuer | 16,000"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What transactions does MIAX Form 144 for Shelly Brown disclose?

The filing discloses a proposed sale of 16,000 shares dated 07/06/2026 from an exercise of stock options, plus 10b5-1 sales totaling multiple tranches between 04/07/2026 and 06/15/2026.

How many shares did Shelly Brown sell under 10b5-1 plans in the excerpt?

The excerpt lists individual 10b5-1 sales of 4,714, 16,000, 16,000, 16,434, and 900 shares executed between 04/07/2026 and 06/15/2026.

Was the July 6, 2026 entry an open-market sale or option exercise?

The July 06, 2026 entry is labeled as an Exercise of Stock Options with 16,000 shares shown and settlement method listed as Cash in the excerpt.

Does the Form 144 state who received proceeds from the sales?

The excerpt identifies the transactions as issuer and 10b5-1 sales but does not state explicit recipients of proceeds or the insider's remaining holdings in the provided content.

Are the 10b5-1 sales in this filing routine disclosures?

Yes. The listed transactions are described as 10b5-1 sales and option exercise entries; the filing functions as a regulatory disclosure of those planned or completed dispositions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 07/06/2026 - 04:32 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002080506
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Miami International Holdings, Inc.
SEC File Number	001-42805
Address of Issuer	7 Roszel Road, Suite 1A Princeton NEW JERSEY 08540
Phone	6098977300
Name of Person for Whose Account the Securities are To Be Sold	SHELLY BROWN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	16000	653440.00	94907086	07/06/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	07/06/2026	Exercise of Stock Options	Issuer			16000	07/06/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for SHELLY BROWN 7 Roszel Road, Suite 1A Princeton NJ 08540	Common	06/15/2026	4714	208491.73
10b5-1 Sales for SHELLY BROWN 7 Roszel Road, Suite 1A Princeton NJ 08540	Common	06/02/2026	16000	673961.60
10b5-1 Sales for SHELLY BROWN 7 Roszel Road, Suite 1A Princeton NJ 08540	Common	05/04/2026	16000	756491.20
10b5-1 Sales for SHELLY BROWN 7 Roszel Road, Suite 1A Princeton NJ 08540	Common	04/08/2026	16434	691467.12
10b5-1 Sales for SHELLY BROWN 7 Roszel Road, Suite 1A Princeton NJ 08540	Common	04/07/2026	900	37800.00

144: Remarks and Signature

Remarks
Date of Notice	07/06/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/22/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Shelly Brown
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)