Transaction · 0001628280-26-065268

Schafer Douglas M. JR

Schafer Douglas M. JR, EC, reported a transaction classified as exercise at MIAMI INTERNATIONAL HOLDINGS, INC. involving 40000.000000 shares for an estimated $0.00. Reported holdings after the transaction were 155334.000000 shares. The stored filing text includes a detected 10b5-1 reference.

exerciseSEC transaction code MEC
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
Filing timeOct 06
Trade dateOct 02, 2026
Filing · SECView on SEC
InsiderProfile
% of reported position tradedUnavailableNot calculated for derivative securities.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$30.79
Pre-filing
1mo ago +31.9%1w ago +13.3%1d ago +9.6%
Returns since
7d30d90d180d1y

MIAX price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
MIAX since 2026-10-06Filed yesterday · 1 day of post-filing data
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
exercise
Code M
Identifier
0001628280-26-065268
Nonqualified Stock Option (Right to Buy)
Transaction date
Oct 02, 2026
Filed Oct 06, 2026, 09:28 PM · 4d delay
Shares
40.0k sh
$0.00 per share
Estimated value
$0
Computed from shares × price
Holdings after
155k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Derivative Transaction Direct Ownership Large Holdings Reduction 10b5-1 Detected
-20score
Filing-only score

-20

Compact filing score computed from stored Form 4 facts. Version v1.

Low filing signal

This filing has a meaningfully negative filing-only score. It is likely less useful as a positive insider-activity signal.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

EVP and CIO

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 16, 2025.

  2. F2

    This transaction was executed in multiple trades throughout the day at prices ranging from $32.91 to $33.97. The price reported above reflects the weighted average sales price. The Reporting Person he…

  3. F3

    The options are fully vested.

Original filing · 0001628280-26-065268
Related transactions

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Same reporting owner
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