GALLAGHER THOMAS P. (Chairman & CEO) sold 9.5% of their position (149.70K shares) of MIAMI INTERNATIONAL HOLDINGS, INC. on the open market
Open‑market sale worth $6.16M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 8/20/2026ACC: 0002080477-26-000016
DirectorOfficer· Chairman & CEO
Since Feb 2026
-300K
Net shares
Net seller
$12.53M
Total sold
1
Open market trades
0B · 1S
2
Total transactions
300K disposed
Non-Derivative Transactions2
Common Stock
Indirect
Shares
−150.30K
Price / share
$42.41
Trade value
$6.37M
% of position
8.7%
8/18/2026
1.72M→1.57M
Common Stock
Indirect
Shares
−149.70K
Price / share
$41.13
Trade value
$6.16M
% of position
9.5%
8/19/2026
1.57M→1.42M
Total
Net shares
−300K
Net value
-$12.53M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Indirect | 8/18/2026 | F · Tax Withholding | −150.30K | $42.41 | $6.37M | 8.7% | 1.72M | 1.57M |
| Common Stock Indirect | 8/19/2026 | S · Sale | −149.70K | $41.13 | $6.16M | 9.5% | 1.57M | 1.42M |
| Total | −300K | -$12.53M | ||||||
Derivative Transactions0
No derivative transactions reported