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SEC EDGAROCT 81 min read$TSM

Chang Tzonz-Sheng purchased $4K of TSM (indirect holdings)

Chang Tzonz-Sheng (SVP) purchased 51 indirectly-held shares of TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) at $79.39 on 2026-10-07.

Original reporting
SEC EDGAR · Chang Tzonz-Sheng
Published Oct 8, 2026, 10:12 AM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Oct 8, 2026, 10:36 AM 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
$TSM
Neutral
high confidence
Mentioned
$TSM
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$TSMNeutralLow
01

Why it matters

The $4K purchase is unlikely to move the stock price materially but may be noted by short‑term traders.

02

Market read

Minor insider buy; limited trading relevance for TSM.

03

What to watch

Potential upcoming corporate actions or market moves not disclosed could change the relevance of this purchase.

Relevance 3/10Novelty 3/10Timing: same‑day filing

Background

Form 4 filings disclose insider trades; analysts watch them for sentiment cues.

Company-level read

Ticker impact

$TSMNeutralHigh confidence
Context

SEC Form 4 shows SVP Chang Tzonz-Sheng bought 51 shares at $79.39, a $4K insider purchase.

Expected impact

slight upward pressure as market views insider buying positively

Evidence & confidence

The transaction is a primary filing, but the amount ($4K) is trivial for a mega‑cap, so any price effect is expected to be minimal.

Market effects

Sector

None; insider activity does not affect the broader semiconductor sector.

Regional

No regional impact; the filing is specific to TSM.

Global

Minimal; only relevant to investors tracking TSM insider activity.

Counterpoint

What could challenge this read

Given the tiny size, the purchase may be routine compensation rather than a confidence signal.

Key entities

  • person
    Chang Tzonz-Sheng

    Senior Vice President and officer at TSM who made the purchase.

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.

TSM insider trading history →

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