Schafer Douglas M. JR has filed 24 insider transactions across 1 company since August 2025.
Most recent transaction: a option exercise of 48000 shares of MIAMI INTERNATIONAL HOLDINGS, INC. ($MIAX) on March 17, 2026.
Activity breakdown: 0 open-market purchases and 1 sale.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 17, 2026 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Common Stock | 48000 | $12.00 | 444,681.0000 | 81,435,030 | 12.10% | 0.06% |
| March 17, 2026 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | S | Common Stock | 48000 | $39.74 | 396,681.0000 | 81,435,030 | 10.79% | 0.06% |
| March 17, 2026 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 48000 | $0.00 | 102,000.0000 | 81,435,030 | 32.00% | 0.06% |
| Feb. 18, 2026 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | F | Common Stock | 32565 | $40.89 | 396,681.0000 | 81,435,030 | 7.59% | 0.04% |
| Feb. 10, 2026 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | F | Common Stock | 108550 | $41.33 | 429,246.0000 | 81,435,030 | 20.18% | 0.13% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Incentive Stock Option (Right to Buy) | 16666 | $0.00 | 16,666.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Incentive Stock Option (Right to Buy) | 19710 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Incentive Stock Option (Right to Buy) | 19710 | $0.00 | 19,710.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 150000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 150000 | $0.00 | 150,000.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 133334 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 133334 | $0.00 | 133,334.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | C | Common Stock | 500 | $0.00 | 537,796.0000 | 0 | 0.09% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 200000 | $0.00 | 200,000.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 130290 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 130290 | $0.00 | 130,290.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 150000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 150000 | $0.00 | 150,000.0000 | 0 | 9999.99% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Nonqualified Stock Option (Right to Buy) | 200000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | C | Common Stock | 387296 | $0.00 | 537,796.0000 | 0 | 257.34% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | C | Series B Preferred Stock | 500 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | C | Nonvoting Common Stock | 387296 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 15, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | M | Incentive Stock Option (Right to Buy) | 16666 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 13, 2025 | MIAMI INTERNATIONAL HOLDINGS, INC. | $MIAX | Schafer Douglas M. JR | EVP and CIO | F | Nonvoting Common Stock | 21710 | $23.00 | 387,296.0000 | 0 | 5.31% | 0.00% |