Paydirt
Insider filing · MIAX

Thomas P. Gallagher bought $276K of Miami International (MIAX)

Executed Aug 13 2025, disclosed Aug 15 2025, 2 days later.

Value, as filed
$276K
12,000 sh × $23.00
Executed
Aug 13 2025
the trade date, as filed
Disclosed
Aug 15 2025
2 days after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
+25.5%
+17.2% from execution

Over the 21 trading sessions from the disclosed entry session (Aug 15 2025), the stock returned +25.5% (delay-adjusted); from the execution session (Aug 14 2025), +17.2%. Derived: entry at the session's open, exit at the close 20 sessions later.

The filer
TG Thomas P. Gallagher Chairman & CEO profile →

Thomas P. Gallagher (Chairman & CEO) filed 9 Form 4 reports in the trailing twelve months (0 purchases, 9 sales), most often in Miami International Holdings, Inc. (MIAX). The largest single filing was $9.7M of MIAX (224,025 sh across 3 lots, as filed), executed Apr 15.

The name
MIAX Miami International Holdings, Inc. MIAX · Financial Services · 63 filings in 24 months ticker →

Financial Services · Miami International Holdings, Inc., through its subsidiaries, builds and operates various financial marketplaces in the United States

More Financial Services filings→ Insider filings, newest first→ View the original filing at www.sec.gov→
Other filings by Thomas P. Gallagher in MIAX
MIAXSALE Miami International Holdings, Inc. $2.0M
47,000 sh × $42.43
Exec Sep 3
Filed Sep 4 · 4:35 PM ET MIAXSALE Miami International Holdings, Inc. $6.2M
149,700 sh × $41.13
Exec Aug 19
Filed Aug 20 · 4:12 PM ET MIAXSALE Miami International Holdings, Inc. $2.2M
48,334 sh × $45.69
Exec Aug 4
Filed Aug 6 · 4:05 PM ET MIAXSALE Miami International Holdings, Inc. $3.0M
70,000 sh × $42.52
Exec Jul 13
Filed Jul 14 · 4:04 PM ET MIAXSALE Miami International Holdings, Inc. $3.0M
70,000 sh across 2 lots
Exec Jul 6
Filed Jul 7 · 5:03 PM ET MIAXSALE Miami International Holdings, Inc. $3.0M
70,000 sh × $42.36
Exec Jun 2
Filed Jun 4 · 5:30 PM ET MIAXSALE Miami International Holdings, Inc. $756K
15,771 sh × $47.92
Exec May 5
Filed May 7 · 5:30 PM ET MIAXSALE Miami International Holdings, Inc. $2.6M
54,229 sh × $47.26
Exec May 4
Filed May 5 · 5:30 PM ET