Schafer Douglas M. JR (CIK 2079445) reported 11 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-07-07). Recent activity: Buy MIAX (6,000 shares), Buy MIAX (42,000 shares), Sell MIAX (48,000 shares), Buy MIAX (23,298 shares), Sell MIAX (32,565 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-07 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Buy | 6,000 | $72,000 |
| 2026-07-07 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Buy | 42,000 | $504,000 |
| 2026-07-07 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Sell | 48,000 | $2.0M |
| 2026-06-18 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Buy | 23,298 | $0 |
| 2026-06-12 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Sell | 32,565 | $1.3M |
| 2026-03-18 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Buy | 48,000 | $576,000 |
| 2026-03-18 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Sell | 48,000 | $1.9M |
| 2026-02-20 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Sell | 32,565 | $1.3M |
| 2026-02-12 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Sell | 108,550 | $4.5M |
| 2025-08-19 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Buy | 500 | $0 |
| 2025-08-19 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | Buy | 387,296 | $0 |
Source: SEC Form 4 filings · as of 2026-07-07