Joseph B Donahue sold $689k of MKSI
director at MKS INSTRUMENTS INC. 2,100 shares at an average of $327.95, traded May 27, 2026, filed May 28, 2026.
Score components
- +15RoleDirector
- +21Trade size$689k at market
- +5Share of holdings soldSold 17% of holdings
- +15Cluster10 insiders selling within 14 days
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001049502-26-000096, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| May 27, 2026 | SOpen-market sale Common Stock | -2,100 | $327.95 | $689k | 10,033 | May 28, 2026 |
Related signals
Other insiders at MKS INSTRUMENTS INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 3Weak | MKS INSTRUMENTS INC | Elizabeth Mora director | $75k 300 shares | -2% | |
| 38Weak | MKS INSTRUMENTS INC | John Tseng-Chung Lee President & CEO | $3.0M 10,000 shares | -7% | |
| 19Weak | MKS INSTRUMENTS INC | John Edward Williams EVP & GM, PSD | $132k 457 shares | -10% | |
| 65Notable | MKS INSTRUMENTS INC | James Alan Schreiner EVP & COO | $1.2M 3,500 shares | -15% | |
| 28Weak | MKS INSTRUMENTS INC | James Alan Schreiner EVP & COO | $248k 781 shares | -3% | |
| 52Moderate | MKS INSTRUMENTS INC | Michelle M McCarthy SVP & Chief Accounting Officer | $767k 2,434 shares | -100% | |
| 65Notable | MKS INSTRUMENTS INC | David Philip Henry EVP, Global Str Mktg & GM, MSD | $1.9M 6,000 shares | -37% | |
| 20Weak | MKS INSTRUMENTS INC | Elizabeth Mora director | $95k 300 shares | -2% | |
| 45Moderate | MKS INSTRUMENTS INC | Gerard G Colella director | $6.7M 20,000 shares | -50% | |
| 38Weak | MKS INSTRUMENTS INC | David Philip Henry EVP, Global Str Mktg & GM, MSD | $826k 2,500 shares | -13% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.