Transaction · 0002079445-26-000017

Schafer Douglas M. JR

Schafer Douglas M. JR, EC, reported a transaction classified as exercise at MIAMI INTERNATIONAL HOLDINGS, INC. involving 43334.000000 shares for an estimated $520008.00. Reported holdings after the transaction were 430748.000000 shares. The stored filing text includes a detected 10b5-1 reference.

exerciseSEC transaction code MEC
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.
Filing timeSep 04
Trade dateSep 02, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$42.39
Pre-filing
1mo ago +10.5%1w ago +2.4%1d ago -0.7%
Returns since
7d +0.0%30d +0.0%90d +0.0%180d +0.0%1y +0.0%

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 2026-09-04Filed 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

Non-derivative
Type
exercise
Code M
Identifier
0002079445-26-000017
Common Stock
Transaction date
Sep 02, 2026
Filed Sep 04, 2026, 08:25 PM · 2d delay
Shares
43.3k sh
$1.20k per share
Estimated value
$52.0M
Computed from shares × price
Holdings after
430k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership 10b5-1 Detected
0score
Filing-only score

0

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

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

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 $39.69 to $41.80. The price reported above reflects the weighted average sales price. The Reporting Person he…

  3. F3

    The options are fully vested.

Original filing · 0002079445-26-000017
Related transactions

0 other filings

Same reporting owner
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