Smollen John, EVP of Traded Products and Relations, made one open market purchase of Miami International Holdings, Inc. ($MIAX) shares in the last year, totaling $115,000. His latest buy occurred on August 13, 2025. Among nearly 5,000 insiders, his purchases rank 2021st by value, well below the average of $1.46 million over about 3.3 transactions. He reported no open market sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 30, 2026 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP, New Product Development | F | Common Stock | 362 | $37.50 | 170,757.0000 | 81,435,030 | 0.21% | 0.00% |
| Sept. 11, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Common Stock | 125001 | $12.00 | 193,174.0000 | 0 | 183.36% | 0.00% |
| Sept. 11, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | F | Common Stock | 52054 | $37.39 | 141,120.0000 | 0 | 26.95% | 0.00% |
| Sept. 11, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Common Stock | 24999 | $12.00 | 166,119.0000 | 0 | 17.71% | 0.00% |
| Sept. 11, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 125001 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Sept. 11, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 24999 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 24999 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 24999 | $0.00 | 24,999.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 8333 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 8333 | $0.00 | 8,333.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 6570 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 6570 | $0.00 | 6,570.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 7757 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 7757 | $0.00 | 7,757.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 125001 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | C | Common Stock | 73173 | $0.00 | 159,839.0000 | 0 | 84.43% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 75001 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 75001 | $0.00 | 75,001.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 104167 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 104167 | $0.00 | 104,167.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 80930 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 80930 | $0.00 | 80,930.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 29743 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 29743 | $0.00 | 29,743.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Nonqualified Stock Option (Right to Buy) | 125001 | $0.00 | 125,001.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | C | Common Stock | 91666 | $0.00 | 159,839.0000 | 0 | 134.46% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | C | Series B Preferred Stock | 91666 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | C | Nonvoting Common Stock | 65947 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 24999 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | M | Incentive Stock Option (Right to Buy) | 24999 | $0.00 | 24,999.0000 | 0 | 9999.99% | 0.00% |
| Aug. 13, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Smollen John | EVP Traded Products & Relation | P | Common Stock | 5000 | $23.00 | 7,226.0000 | 0 | 224.62% | 0.00% |