James Alan Schreiner insider trades: Mks (MKSI) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where James reports to the SEC
Open-market buys and sales
6 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 12, 2026 | MKSI | ↓ Sell | 3,500 | $345.82 | $1.2M | Direct | Jun 16, 2026 (4d) |
| Jun 10, 2026 | MKSI | ↓ Sell | 781 | $317.42 | $248K | Direct | Jun 11, 2026 (1d) |
| Feb 24, 2026 | MKSI | ↓ Sell | 4,100 | $255.00 | $1.0M | Direct | Feb 25, 2026 (1d) |
| Oct 22, 2025 | MKSI | ↓ Sell | 711 | $138.68 | $99K | Direct | Oct 23, 2025 (1d) |
| Sep 18, 2025 | MKSI | ↓ Sell | 838 | $124.00 | $104K | Direct | Sep 19, 2025 (1d) |
| Jul 7, 2025 | MKSI | ↓ Sell | 957 | $102.44 | $98K | Direct | Jul 8, 2025 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MKSI insiders
Open-market trades in the last 12 months
About James Alan Schreiner's insider trades
James Alan Schreiner is EVP & COO at Mks (MKSI). Since Jul 7, 2025, James has reported no open-market purchases and 6 sales worth $2.8M on SEC Form 4. In the last 12 months: 3 sales ($2.5M).
Their filings also include grants and awards (16 filings), option exercises (11 filings), shares withheld for taxes (11 filings). 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 MKSI insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.