MIAX Insider Trading Activity and SEC Form 4 Filings
MIAX insider trading summary
Over the past 12 months, insiders at Miami International Holdings, Inc. (MIAX) reported 68 sales worth $83.9M by 12 insiders and 8 open-market purchases worth $2.1M by 2 insiders on SEC Form 4. Net insider selling was $81.8M.
Latest MIAX insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Nov 4, 2026 | Barbara J. Comly | EVP, GC & Corporate Secretary | Sell | $2.0M (56,022 @ $35.07) |
| Nov 4, 2026 | Douglas M. Schafer JR | EVP and CIO | Sell | $280K (8,000 @ $35.00) |
| Nov 3, 2026 | Douglas M. Schafer JR | EVP and CIO | Sell | $1.4M (40,000 @ $34.07) |
| Nov 2, 2026 | Barbara J. Comly | EVP, GC & Corporate Secretary | Sell | $819K (23,339 @ $35.10) |
| Oct 22, 2026 | Barbara J. Comly | EVP, GC & Corporate Secretary | Sell | $431K (12,306 @ $35.04) |
| Oct 22, 2026 | Douglas M. Schafer JR | EVP and CIO | Sell | $280K (8,000 @ $35.06) |
| Oct 2, 2026 | Douglas M. Schafer JR | EVP and CIO | Sell | $1.3M (40,000 @ $33.34) |
| Sep 16, 2026 | Shelly Brown | EVP, Chief Strategy Officer | Sell | $819K (21,217 @ $38.61) |
| Sep 3, 2026 | Edward Deitzel | EVP, CRO, CCO MIAX Exchanges | Sell | $464K (11,000 @ $42.21) |
| Sep 3, 2026 | Thomas P. Gallagher | Chairman & CEO | Sell | $2.0M (47,000 @ $42.43) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.