MIAX Stock: Insider Activity, Filings & Research

MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) — Drillr’s hub for MIAX insider activity, SEC filings, earnings signals and AI research. Over the trailing 3 months, MIAX insiders filed 0 open-market buys and 23 sales (SEC Form 4).

MIAX insider trading activity (SEC Form 4)

Sentiment
0/100
Buys (3m)
0
Sells (3m)
23
Net (3m)
-$25.6M
Insider trades by month Buys Sells
Mar
Apr
May
Context3-month price -5.8%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
May 19, 2026Teekell Judson GraydirectorOption22,667$12.00
May 19, 2026Teekell Judson GraydirectorTax4,991$54.51
May 18, 2026Emmons Lanceofficer: EVP and CFOSell35,000$56.36
May 13, 2026Gallagher Thomas P.director, officer: Chairman & CEOOption24,999$12.00
May 7, 2026Gallagher Thomas P.director, officer: Chairman & CEOOption15,771$12.00
May 7, 2026Gallagher Thomas P.director, officer: Chairman & CEOSell15,771$47.92
May 5, 2026Teekell Judson GraydirectorSell3,000$47.30
May 5, 2026Comly Barbara J.officer: EVP, GC & Corporate SecretaryOption28,000$12.00
May 5, 2026Comly Barbara J.officer: EVP, GC & Corporate SecretarySell28,000$47.26
May 5, 2026Brown Shellyofficer: EVP, Chief Strategy OfficerSell16,000$47.28
May 5, 2026Brown Shellyofficer: EVP, Chief Strategy OfficerOption16,000$12.00
May 5, 2026Deitzel Edwardofficer: EVP, CRO, CCO MIAX ExchangesSell11,000$47.28
May 5, 2026Deitzel Edwardofficer: EVP, CRO, CCO MIAX ExchangesOption11,000$12.00
May 5, 2026Gallagher Thomas P.director, officer: Chairman & CEOSell54,229$47.26
May 5, 2026Gallagher Thomas P.director, officer: Chairman & CEOOption54,229$12.00

Source: MIAX SEC Form 4 filings, latest May 19, 2026. For informational purposes only — not investment advice.

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