$MKSI

Lee John Tseng-Chung sold $3.0M of MKSI

Lee John Tseng-Chung (President & CEO) sold 10,000 shares of MKS INC (MKSI) at $302.01 ($3.02M total) on 2026-08-14 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Lee John Tseng-Chung
Published Aug 17, 2026, 2:11 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 17, 2026, 2:46 PM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
AlphAI market briefInsider activity
Primary signal
$MKSI
Neutral
high confidence
Mentioned
$MKSI
Relevance
5/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$MKSINeutralLow
01

Why it matters

The newest fact is the CEO’s open-market sale details (shares, price, total value) and that it was executed under a pre-arranged 10b5-1 plan.

02

Market read

This provides a fresh, company-specific insider trading datapoint, but it is not tied to new corporate fundamentals.

03

What to watch

Traders may over-weight insider sales; without additional context (e.g., concurrent buys, changes in guidance), the signal is weak.

Relevance 5/10Novelty 3/10Timing: filed 2026-08-17, discloses sale executed 2026-08-14

Background

The article is an SEC Form 4 insider transaction disclosure for MKS Inc (MKSI).

Company-level read

Ticker impact

$MKSINeutralHigh confidence
Context

MKS Inc CEO Lee John Tseng-Chung filed a Form 4 selling 10,000 shares at $302.01 on 2026-08-14 under a 10b5-1 plan.

Expected impact

Low near-term impact; any reaction is likely limited to short-lived sentiment around insider selling.

Evidence & confidence

The filing is a Form 4 open-market sale by the CEO, explicitly under a pre-arranged 10b5-1 plan, with no accompanying guidance, deal, or regulatory action.

Market effects

Minimal; insider sale does not signal sector-wide change.

None indicated.

None indicated.

Counterpoint

Because the sale is under a 10b5-1 plan, it may reflect liquidity management rather than bearish expectations.

Key entities

  • MKS Inc

    Company whose CEO insider sale is disclosed on Form 4.

  • Lee John Tseng-Chung

    President and CEO who sold 10,000 shares.

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

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