Schafer Douglas M. JR bought MIAX
October 2, 2026 · Form 4 insider transaction
Schafer Douglas M. JR bought 40,000 shares of Miami International Holdings, Inc. at $12.00 per share, a transaction worth $480.0K. The trade was recorded as option exercise under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 4 days after the transaction.
Direction
Acquired (buy-side)
Shares
40,000
Price
$12.00
Total value
$480.0K
InsiderSchafer Douglas M. JR
Role—
SecurityCommon Stock
Transaction codeM: Option exercise
Transaction dateOctober 2, 2026
Filing dateOctober 6, 2026
Shares owned after427,414
OwnershipDirect
10b5-1 planYes
AmendedNo
Footnotes
This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 16, 2025.