Insider Shelly Brown Files Form 144 for MIAMI INTERNATIONAL HOLDINGS

TL;DR

**Insider Shelly Brown is selling MIAMI INTERNATIONAL HOLDINGS shares.**

AI Summary

Shelly Brown, an insider at Miami International Holdings, Inc. (CIK: 0001438472), has filed a Form 144 on March 23, 2026, indicating a proposed sale of company securities. This filing signals that an insider intends to sell shares, which could be interpreted by investors as a lack of confidence in the company's near-term stock price, potentially putting downward pressure on the stock.

Why It Matters

When insiders sell shares, it can signal to the market that those closest to the company believe the stock may be overvalued or that better opportunities exist elsewhere, potentially influencing other investors' decisions.

Risk Assessment

Risk Level: medium — Insider selling can sometimes precede a decline in stock price, but the reasons for selling are not always negative (e.g., personal financial planning).

Analyst Insight

A smart investor would monitor subsequent filings (like Form 4) to confirm the actual sale and the number of shares sold by Shelly Brown, and consider this insider selling as one data point among many when evaluating their investment in Miami International Holdings, Inc.

Key Players & Entities

• Brown Shelly (person) — Reporting person, an insider at Miami International Holdings, Inc.
• MIAMI INTERNATIONAL HOLDINGS, INC. (company) — Subject company whose securities are being proposed for sale.
• 0002080506 (person) — CIK for Brown Shelly
• 0001438472 (company) — CIK for MIAMI INTERNATIONAL HOLDINGS, INC.
• 2026-03-23 (date) — Filing Date and Accepted Date of the Form 144

FAQ

Filing Documents

• primary_doc.html (144)
• primary_doc.xml (144) — 3KB
• 0001950047-26-002908.txt ( ) — 5KB

From the Filing

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 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. 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 25932 1013941.20 91651482 03/23/2026 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 02/15/2026 Restricted Stock Awards Issuer 25932 02/15/2026 N/A * 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 Nothing to Report 144: Remarks and Signature Remarks The securities to be sold were acquired upon the vesting of restricted stock awards during the period of 02/15/2026 through 02/16/2026. Date of Notice 03/23/2026 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)

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View this 144 filing on SEC EDGAR