Form 4 Tracker
Douglas M. Schafer JR

EVP and CIO · 9 filings · Latest: Aug 4, 2026

MIAMI INTERNATIONAL HOLDINGS, INC.
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
MIAX
Douglas M. Schafer JREVP and CIOAug 4, 2026
Sale
$45.7148,000$2.2M387,414
MIAX
Douglas M. Schafer JREVP and CIOAug 4, 2026
Option Exercise
$12.0048,000$576.0K435,414
MIAX
Douglas M. Schafer JREVP and CIOJul 2, 2026
Sale
$41.2248,000$2.0M387,414
MIAX
Douglas M. Schafer JREVP and CIOJul 2, 2026
Option Exercise
$12.0048,000$576.0K435,414
MIAX
DOUGLAS M. SCHAFER JR.Jul 2, 2026
Proposed Sale
$39.05144,000$5.6M
MIAX
Douglas M. Schafer JREVP and CIOJun 2, 2026
Sale
$42.8448,000$2.1M396,681
MIAX
Douglas M. Schafer JREVP and CIOJun 2, 2026
Option Exercise
$12.0048,000$576.0K444,681
MIAX
Douglas M. Schafer JREVP and CIOMay 4, 2026
Sale
$47.2548,000$2.3M396,681
MIAX
Douglas M. Schafer JREVP and CIOMay 4, 2026
Option Exercise
$12.0048,000$576.0K444,681
MIAX
Douglas M. Schafer JREVP and CIOMar 17, 2026
Sale
$39.7448,000$1.9M396,681
MIAX
Douglas M. Schafer JREVP and CIOMar 17, 2026
Option Exercise
$12.0048,000$576.0K444,681
MIAX
DOUGLAS M. SCHAFER JR.Mar 17, 2026
Proposed Sale
$39.49144,000$5.7M