Schafer Douglas M. JR bought MIAX
October 22, 2026 · Form 4 insider transaction
Schafer Douglas M. JR bought 8,000 shares of Miami International Holdings, Inc. at $12.00 per share, a transaction worth $96.0K. 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
8,000
Price
$12.00
Total value
$96.0K
InsiderSchafer Douglas M. JR
Role—
SecurityCommon Stock
Transaction codeM: Option exercise
Transaction dateOctober 22, 2026
Filing dateOctober 26, 2026
Shares owned after395,414
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.