There have been 17 recent insider transactions recorded for Miami International Holdings, Inc. (MIAX), including 3 buys and 13 sells. Total insider buying was valued at $934.85K and total insider selling at $6.15M.
Notable insiders with recent activity include Teekell Judson Gray, Gallagher Thomas P., Brown Shelly. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — MIAX
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-04-02 |
Teekell Judson Gray |
Director |
Informative Sell |
2,700 |
$40.00 |
$108K |
59,338 |
| 2026-03-30 |
Gallagher Thomas P. |
Chairman & CEO |
Tax Withholding of RSU |
20,875 |
$37.50 |
$782.81K |
1,827,399 |
| 2026-03-30 |
Brown Shelly |
EVP, Chief Strategy Officer |
Option Exercise (Sell) |
5,040 |
$19.84 |
$99.99K |
- |
| 2026-03-30 |
Deitzel Edward |
EVP, Cro, Cco Miax Exchanges |
Tax Withholding of RSU |
707 |
$37.50 |
$26.51K |
116,221 |
| 2026-03-30 |
Emmons Lance |
EVP and CFO |
Tax Withholding of RSU |
8,350 |
$37.50 |
$313.13K |
119,262 |
| 2026-03-30 |
Smollen John |
EVP, New Product Development |
Tax Withholding of RSU |
362 |
$37.50 |
$13.58K |
170,757 |
| 2026-03-30 |
Comly Barbara J. |
EVP, Gc & Corporate Secretary |
Tax Withholding of RSU |
1,448 |
$37.50 |
$54.3K |
843,844 |
| 2026-03-25 |
Teekell Judson Gray |
Director |
Informative Sell |
300 |
$40.00 |
$12K |
62,038 |
| 2026-03-25 |
Sommers Jill E. |
Director |
Unknown |
8,306 |
$22.34 |
$185.56K |
- |
| 2026-03-23 |
Brown Shelly |
EVP, Chief Strategy Officer |
Informative Sell |
25,932 |
$39.33 |
$1.02M |
299,197 |
| 2026-03-19 |
Eckert Kurt M. |
Director |
Option Exercise (Sell) |
12,917 |
$12.00 |
$155K |
- |
| 2026-03-17 |
Schafer Douglas M. Jr |
EVP and CIO |
Option Exercise (Sell) |
48,000 |
$12.00 |
$576K |
102,000 |
| 2026-03-05 |
Stahl Murray |
Director |
Informative Buy |
7,200 |
$43.08 |
$310.18K |
4,633,842 |
| 2026-03-04 |
Stahl Murray |
Director |
Informative Buy |
7,200 |
$43.38 |
$312.34K |
4,696,666 |
| 2026-03-04 |
Stahl Murray |
Director |
Informative Buy |
7,200 |
$43.38 |
$312.34K |
4,626,642 |
| 2026-03-02 |
Stahl Murray |
Director |
Option Exercise (ITM) |
38,927 |
$20.50 |
$798K |
- |
| 2026-03-02 |
Stahl Murray |
Director |
Informative Sell |
53,578 |
$40.92 |
$2.19M |
4,619,442 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
