Insider · CIK 0001842459
David Philip Henry
officer
Files at MKSI (MKS INC). First filing Jul 7, 2025, latest Sep 19, 2025.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 2
$0 bought, $860k sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
MKSI: MKS INC
MKSIOct 9, 2026 · close 264.50
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 35Weak | MKS INC | $650k 5,000 shares | -24% | +122% from low0% from high | |
| 15Weak | MKS INC | $210k 2,000 shares | -9% | +78% from low-14% from high |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 18, 2025 | MKSI MKS INC | SOpen-market sale Common Stock10b5-1 | -5,000 | $130.00 | $650k | 15,571 | Sep 19, 2025 |
| Jul 3, 2025 | MKSI MKS INC | SOpen-market sale Common Stock10b5-1 | -2,000 | $105.00 | $210k | 20,571 | Jul 7, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Common Stock | +1,528 | - | - | 18,306 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Common Stock | +1,099 | - | - | 19,405 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Common Stock | +2,406 | - | - | 21,811 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Common Stock | +1,246 | - | - | 23,057 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Common Stock | +456 | - | - | 23,513 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Common Stock | +1,278 | - | - | 24,791 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | FTax withholding Common Stock | -2,372 | $103.67 | $246k | 22,419 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | AGrant or award Restricted Stock Unitderivative | +6,163 | - | - | 21,300 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Restricted Stock Unitderivative | -1,528 | - | - | 19,771 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Restricted Stock Unitderivative | -1,099 | - | - | 18,672 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Restricted Stock Unitderivative | -2,406 | - | - | 16,266 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Restricted Stock Unitderivative | -1,246 | - | - | 15,020 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Restricted Stock Unitderivative | -456 | - | - | 14,564 | Feb 19, 2025 |
| Feb 18, 2025 | MKSI MKS INC | MOption exercise Restricted Stock Unitderivative | -1,278 | - | - | 13,286 | Feb 19, 2025 |
| Feb 10, 2025 | MKSI MKS INC | AGrant or award Restricted Stock Unitderivative | +1,369 | - | - | 15,137 | Feb 11, 2025 |
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.