Douglas M. Schafer JR insider trades: Miami International Holdings (MIAX) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Douglas reports to the SEC
Open-market buys and sales
8 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Nov 4, 2026 | MIAX | ↓ Sell | 48,000 | $34.23 | $1.6M | Direct | Nov 5, 2026 (1d) |
| Oct 22, 2026 | MIAX | ↓ Sell | 8,000 | $35.06 | $280K | Direct | Oct 26, 2026 (4d) |
| Oct 2, 2026 | MIAX | ↓ Sell | 40,000 | $33.34 | $1.3M | Direct | Oct 6, 2026 (4d) |
| Sep 2, 2026 | MIAX | ↓ Sell | 48,000 | $40.48 | $1.9M | Direct | Sep 4, 2026 (2d) |
| Jul 2, 2026 | MIAX | ↓ Sell | 48,000 | $41.22 | $2.0M | Direct | Jul 7, 2026 (5d) |
| Jun 2, 2026 | MIAX | ↓ Sell | 48,000 | $42.84 | $2.1M | Direct | Jun 4, 2026 (2d) |
| May 4, 2026 | MIAX | ↓ Sell | 48,000 | $47.25 | $2.3M | Direct | May 5, 2026 (1d) |
| Mar 17, 2026 | MIAX | ↓ Sell | 48,000 | $39.74 | $1.9M | Direct | Mar 18, 2026 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MIAX insiders
Open-market trades in the last 12 months
About Douglas M. Schafer JR's insider trades
Douglas M. Schafer JR is EVP and CIO at Miami International Holdings (MIAX). Since Mar 17, 2026, Douglas has reported no open-market purchases and 8 sales worth $13.4M on SEC Form 4. In the last 12 months: 8 sales ($13.4M).
Their filings also include option exercises (9 filings), shares withheld for taxes (4 filings), grants and awards (1 filing), conversions (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MIAX insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.