MIAX insider filings
MIAMI INTERNATIONAL HOLDINGS, INC. — 50 most recent insider filings (SEC Forms 3/4/5) from EDGAR, normalized by FilingPulse. Latest filing: 2026-10-06. Screen MIAX transaction legs live →
Insider transaction summary — last 90 days
2026-07-10 to 2026-10-08, from the filings listed below: 23 insider filings (Forms 3/4/5). Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 21 legs across 20 filings by 10 insiders — 688,749 shares, $28,980,246 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 47.
- Largest priced transaction: sale of 149,700 shares @ $41.13 ($6,157,161) by Gallagher Thomas P., filed 2026-08-20.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Gallagher Thomas P. — Chairman & CEO, Director | 4 | — | 4 legs · 315,034 sh · $13,336,151 | 15 |
| Schafer Douglas M. JR — EVP and CIO | 3 | — | 3 legs · 136,000 sh · $5,470,720 | 8 |
| Comly Barbara J. — EVP, GC & Corporate Secretary | 4 | — | 3 legs · 116,890 sh · $5,005,710 | 7 |
| Emmons Lance — EVP and CFO | 1 | — | 1 leg · 35,000 sh · $1,499,050 | — |
| Deitzel Edward — EVP, CRO, CCO MIAX Exchanges | 2 | — | 2 legs · 22,000 sh · $967,890 | 4 |
| Jayabalan Harish — EVP, CISO and CRO | 2 | — | 1 leg · 20,000 sh · $918,000 | 6 |
| Brown Shelly — EVP, Chief Strategy Officer | 2 | — | 1 leg · 21,217 sh · $819,188 | 1 |
| Teekell Judson Gray — Director | 2 | — | 3 legs · 11,545 sh · $490,601 | — |
| Schwarzkopf Cynthia — Director | 2 | — | 2 legs · 10,000 sh · $424,250 | 4 |
| Eckert Kurt M. — Director | 1 | — | 1 leg · 1,063 sh · $48,685 | 2 |
Recent insider filings — MIAMI INTERNATIONAL HOLDINGS, INC.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-10-06 | 4 | Schafer Douglas M. JR — EVP and CIO | Option exercise (M): 40,000 @ $12 · Sale (S): 40,000 @ $33.34 · Option exercise (M): 40,000 (derivative) @ $0 | EDGAR |
| 2026-09-29 | 4 | Jayabalan Harish — EVP, CISO and CRO | Option exercise (M): 8,333 @ $12 · Option exercise (M): 8,333 (derivative) @ $0 | EDGAR |
| 2026-09-17 | 4 | Brown Shelly — EVP, Chief Strategy Officer | Sale (S): 21,217 @ $38.61 | EDGAR |
| 2026-09-11 | 4 | Brown Shelly — EVP, Chief Strategy Officer | Tax withholding (F): 16,283 @ $42.54 | EDGAR |
| 2026-09-04 | 4 | Gallagher Thomas P. — Chairman & CEO, Director | Option exercise (M): 47,000 @ $12 · Sale (S): 47,000 @ $42.43 · Option exercise (M): 16,666 @ $12 · Option exercise (M): 8,333 @ $12 · Option exercise (M): 13,140 @ $15.22 · Option exercise (M): 4,464 @ $22.40 · +5 more | EDGAR |
| 2026-09-04 | 4 | Comly Barbara J. — EVP, GC & Corporate Secretary | Option exercise (M): 44,445 @ $12 · Sale (S): 44,445 @ $40.49 · Option exercise (M): 44,445 (derivative) @ $0 | EDGAR |
| 2026-09-04 | 4 | Deitzel Edward — EVP, CRO, CCO MIAX Exchanges | Option exercise (M): 11,000 @ $12 · Sale (S): 11,000 @ $42.21 · Option exercise (M): 11,000 (derivative) @ $0 | EDGAR |
| 2026-09-04 | 4 | Teekell Judson Gray — Director | Sale (S): 5,545 @ $41.58 · Sale (S): 3,000 @ $40.89 | EDGAR |
| 2026-09-04 | 4 | Schafer Douglas M. JR — EVP and CIO | Option exercise (M): 43,334 @ $12 · Option exercise (M): 4,666 @ $12 · Sale (S): 48,000 @ $40.48 · Option exercise (M): 43,334 (derivative) @ $0 · Option exercise (M): 4,666 (derivative) @ $0 | EDGAR |
| 2026-08-20 | 4 | Gallagher Thomas P. — Chairman & CEO, Director | Tax withholding (F): 150,300 @ $42.41 · Sale (S): 149,700 @ $41.13 | EDGAR |
| 2026-08-20 | 4 | Comly Barbara J. — EVP, GC & Corporate Secretary | Tax withholding (F): 43,420 @ $42.41 | EDGAR |
| 2026-08-19 | 4 | Emmons Lance — EVP and CFO | Sale (S): 35,000 @ $42.83 | EDGAR |
| 2026-08-19 | 4 | Schwarzkopf Cynthia — Director | Option exercise (M): 5,000 @ $12 · Sale (S): 5,000 @ $42.85 · Option exercise (M): 5,000 (derivative) @ $0 | EDGAR |
| 2026-08-06 | 4 | Jayabalan Harish — EVP, CISO and CRO | Option exercise (M): 14,168 @ $12 · Option exercise (M): 5,832 @ $15.22 · Sale (S): 20,000 @ $45.90 · Option exercise (M): 14,168 (derivative) @ $0 · Option exercise (M): 5,832 (derivative) @ $0 | EDGAR |
| 2026-08-06 | 4 | Teekell Judson Gray — Director | Sale (S): 3,000 @ $45.79 | EDGAR |
| 2026-08-06 | 4 | Eckert Kurt M. — Director | Option exercise (M): 1,063 @ $12 · Sale (S): 1,063 @ $45.80 · Option exercise (M): 1,063 (derivative) @ $0 | EDGAR |
| 2026-08-06 | 4 | Gallagher Thomas P. — Chairman & CEO, Director | Option exercise (M): 48,334 @ $12 · Sale (S): 48,334 @ $45.69 · Option exercise (M): 48,334 (derivative) @ $0 | EDGAR |
| 2026-08-06 | 4 | Schafer Douglas M. JR — EVP and CIO | Option exercise (M): 48,000 @ $12 · Sale (S): 48,000 @ $45.71 · Option exercise (M): 48,000 (derivative) @ $0 | EDGAR |
| 2026-08-06 | 4 | Deitzel Edward — EVP, CRO, CCO MIAX Exchanges | Option exercise (M): 11,000 @ $12 · Sale (S): 11,000 @ $45.78 · Option exercise (M): 11,000 (derivative) @ $0 | EDGAR |
| 2026-08-06 | 4 | Comly Barbara J. — EVP, GC & Corporate Secretary | Option exercise (M): 44,445 @ $12 · Sale (S): 44,445 @ $45.69 · Option exercise (M): 44,445 (derivative) @ $0 | EDGAR |
| 2026-07-16 | 4 | Schwarzkopf Cynthia — Director | Option exercise (M): 5,000 @ $12 · Sale (S): 5,000 @ $42 · Option exercise (M): 5,000 (derivative) @ $0 | EDGAR |
| 2026-07-14 | 4 | Comly Barbara J. — EVP, GC & Corporate Secretary | Option exercise (M): 28,000 @ $12 · Sale (S): 28,000 @ $41.98 · Option exercise (M): 28,000 (derivative) @ $0 | EDGAR |
| 2026-07-14 | 4 | Gallagher Thomas P. — Chairman & CEO, Director | Option exercise (M): 70,000 @ $12 · Sale (S): 70,000 @ $42.52 · Option exercise (M): 70,000 (derivative) @ $0 | EDGAR |
| 2026-07-09 | 4 | BROWN DAVID A — Director | Tax withholding (F): 171 @ $43.72 | EDGAR |
| 2026-07-07 | 4 | Gallagher Thomas P. — Chairman & CEO, Director | Option exercise (M): 41,772 @ $12 · Sale (S): 41,772 @ $42.09 · Option exercise (M): 28,228 @ $12 · Sale (S): 28,228 @ $42.27 · Option exercise (M): 41,772 (derivative) @ $0 · Option exercise (M): 28,228 (derivative) @ $0 | EDGAR |
| 2026-07-07 | 4 | Jayabalan Harish — EVP, CISO and CRO | Option exercise (M): 834 @ $12 · Option exercise (M): 16,667 @ $12 · Option exercise (M): 2,499 @ $12 · Sale (S): 20,000 @ $42.12 · Option exercise (M): 834 (derivative) @ $0 · Option exercise (M): 16,667 (derivative) @ $0 · +1 more | EDGAR |
| 2026-07-07 | 4 | Deitzel Edward — EVP, CRO, CCO MIAX Exchanges | Option exercise (M): 7,333 @ $12 · Option exercise (M): 3,667 @ $12 · Sale (S): 11,000 @ $42.04 · Option exercise (M): 7,333 (derivative) @ $0 · Option exercise (M): 3,667 (derivative) @ $0 | EDGAR |
| 2026-07-07 | 4 | Brown Shelly — EVP, Chief Strategy Officer | Option exercise (M): 16,000 @ $12 · Sale (S): 16,000 @ $42.13 · Option exercise (M): 16,000 (derivative) @ $0 | EDGAR |
| 2026-07-07 | 4 | Teekell Judson Gray — Director | Sale (S): 3,000 @ $40 | EDGAR |
| 2026-07-07 | 4 | Eckert Kurt M. — Director | Option exercise (M): 5,250 @ $12 · Sale (S): 5,250 @ $39.35 · Option exercise (M): 5,250 (derivative) @ $0 | EDGAR |
| 2026-07-07 | 4 | Comly Barbara J. — EVP, GC & Corporate Secretary | Option exercise (M): 28,000 @ $12 · Sale (S): 28,000 @ $41.22 · Option exercise (M): 28,000 (derivative) @ $0 | EDGAR |
| 2026-07-07 | 4 | Schafer Douglas M. JR — EVP and CIO | Option exercise (M): 6,000 @ $12 · Option exercise (M): 42,000 @ $12 · Sale (S): 48,000 @ $41.22 · Option exercise (M): 6,000 (derivative) @ $0 · Option exercise (M): 42,000 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | Comly Barbara J. — EVP, GC & Corporate Secretary | Grant/award (A): 39,140 @ $0 · Grant/award (A): 2,485 (derivative) @ $0 · Grant/award (A): 37,778 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | Smollen John — EVP, New Product Development | Grant/award (A): 7,455 @ $0 · Grant/award (A): 2,485 (derivative) @ $0 · Grant/award (A): 5,184 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | Emmons Lance — EVP and CFO | Grant/award (A): 37,276 @ $0 · Grant/award (A): 2,485 (derivative) @ $0 · Grant/award (A): 35,861 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | Deitzel Edward — EVP, CRO, CCO MIAX Exchanges | Grant/award (A): 9,319 @ $0 · Grant/award (A): 2,485 (derivative) @ $0 · Grant/award (A): 7,101 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | Vermaas Cees — CEO of TISEG | Grant/award (A): 4,660 @ $0 · Grant/award (A): 4,793 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | Jayabalan Harish — EVP, CISO and CRO | Grant/award (A): 4,660 @ $0 · Grant/award (A): 2,485 (derivative) @ $0 · Grant/award (A): 34,808 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | Brown Shelly — EVP, Chief Strategy Officer | Grant/award (A): 37,276 @ $0 · Grant/award (A): 2,485 (derivative) @ $0 · Grant/award (A): 35,861 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | Gallagher Thomas P. — Chairman & CEO, Director | Grant/award (A): 232,977 @ $0 · Grant/award (A): 2,485 (derivative) @ $0 · Grant/award (A): 237,175 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | Schafer Douglas M. JR — EVP and CIO | Grant/award (A): 23,298 @ $0 · Grant/award (A): 2,485 (derivative) @ $0 · Grant/award (A): 21,481 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | Schwarzkopf Cynthia — Director | Grant/award (A): 2,267 @ $0 · Grant/award (A): 4,970 @ $0 · Grant/award (A): 5,142 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | Beckelman John — Director | Grant/award (A): 2,267 @ $0 · Grant/award (A): 4,970 @ $0 | EDGAR |
| 2026-06-17 | 4 | Brown Shelly — EVP, Chief Strategy Officer | Sale (S): 4,714 @ $44.23 | EDGAR |
| 2026-06-17 | 4 | Raymond Mark F. — Director | Grant/award (A): 2,267 @ $0 · Option exercise (M): 16,000 @ $12 · Grant/award (A): 4,970 @ $0 · Option exercise (M): 16,000 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | Teekell Judson Gray — Director | Grant/award (A): 2,267 @ $0 · Grant/award (A): 4,970 @ $0 | EDGAR |
| 2026-06-17 | 4 | Sommers Jill E. — Director | Grant/award (A): 1,113 @ $0 · Grant/award (A): 4,970 @ $0 · Grant/award (A): 2,571 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | Stahlin Paul — Director | Grant/award (A): 2,267 @ $0 · Grant/award (A): 4,970 @ $0 | EDGAR |
| 2026-06-17 | 4 | Sites Eric — Director | Grant/award (A): 714 @ $0 · Grant/award (A): 4,970 @ $0 | EDGAR |
| 2026-06-17 | 4 | BROWN DAVID A — Director | Grant/award (A): 2,267 @ $0 · Grant/award (A): 4,970 @ $0 · Grant/award (A): 5,142 (derivative) @ $0 | EDGAR |
Recent 8-K events — MIAMI INTERNATIONAL HOLDINGS, INC.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-05 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-21 | 8-K | 8.01 — Other Events | EDGAR |
| 2026-06-22 | 8-K | 3.02 — Unregistered Sales of Equity Securities | EDGAR |
| 2026-06-18 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-06-17 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-05-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-04-27 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-04-09 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-03-26 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-03-02 | 8-K | 3.02 — Unregistered Sales of Equity Securities | EDGAR |
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