Gallagher Thomas P. Insider Trading -- Recent SEC Form 4 Transactions

Gallagher Thomas P. (CIK 2080477) reported 29 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-20). Recent activity: Sell MIAX (150,300 shares), Sell MIAX (149,700 shares), Buy MIAX (48,334 shares), Sell MIAX (48,334 shares), Buy MIAX (70,000 shares). Source: SEC Form 4.

DateCompanyRoleTypeSharesValue
2026-08-20MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell150,300$6.4M
2026-08-20MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell149,700$6.2M
2026-08-06MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOBuy48,334$580,008
2026-08-06MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell48,334$2.2M
2026-07-14MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOBuy70,000$840,000
2026-07-14MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell70,000$3.0M
2026-07-07MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOBuy41,772$501,264
2026-07-07MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell41,772$1.8M
2026-07-07MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOBuy28,228$338,736
2026-07-07MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell28,228$1.2M
2026-06-18MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOBuy232,977$0
2026-06-04MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell70,000$3.0M
2026-06-04MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOBuy70,000$840,000
2026-05-13MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOBuy24,999$299,988
2026-05-07MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOBuy15,771$189,252
2026-05-07MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell15,771$755,746
2026-05-05MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOBuy54,229$650,748
2026-05-05MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell54,229$2.6M
2026-04-17MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOBuy70,001$840,012
2026-04-17MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell70,001$3.0M
2026-04-17MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell104,124$4.5M
2026-04-17MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell49,900$2.2M
2026-02-12MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell50,100$2.1M
2025-12-29MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell2,000$0
2025-08-28MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)Chairman & CEOSell192,220$6.5M

Source: SEC Form 4 filings · as of 2026-08-20