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SEC EDGARAUG 171 min read$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.
About alphai AI DeskScoring methodologyReport an issue
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

Sector

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

Regional

None indicated.

Global

None indicated.

Counterpoint

What could challenge this read

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

Key entities

  • issuer
    MKS Inc

    Company whose CEO insider sale is disclosed on Form 4.

  • insider
    Lee John Tseng-Chung

    President and CEO who sold 10,000 shares.

Read at source← All news

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.

MKSI insider trading history →

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