SEC EDGARAUG 102 min read$TSM

Chuang Tzu-Sou purchased $3K of TSM (indirect holdings)

Chuang Tzu-Sou (VP) purchased 47 indirectly-held shares of TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) at $73.31 on 2026-08-07.

Original reporting

SEC EDGAR · Chuang Tzu-Sou

Published Aug 10, 2026, 11:43 AM UTC

Analysis

AlphAI AI DeskAI-generated

Added to AlphAI Aug 10, 2026, 12:09 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 Desk Scoring methodology Report an issue

AlphAI market briefInsider activity

Primary signal

$TSM

Neutral

low confidence

Mentioned

$TSM

Relevance

3/10

AlphAI data visualization · based on SEC EDGAR

Decision brief

The 30-second read

$TSMNeutralLow

Why it matters

The newest fact is the specific open-market purchase details (47 shares at $73.31) by VP Chuang Tzu-Sou, indirect holdings, filed on 2026-08-10.

Market read

This is routine insider buying disclosure with limited trading value due to small size and no accompanying fundamental catalyst.

What to watch

Indirect holdings and small share count reduce interpretability; without follow-on buys/sells or larger transactions, signal-to-noise is low.

Relevance 3/10Novelty 3/10Timing: filed 2026-08-10, transaction dated 2026-08-07

Background

The article is an SEC Form 4 insider transaction disclosure for TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM).

Company-level read

Ticker impact

AI estimates · verify against primary disclosures

$TSMNeutralLow confidence

Context

SEC Form 4 shows VP Chuang Tzu-Sou bought 47 shares of TSM at $73.31/share on 2026-08-07, indirect holdings.

Expected impact

Limited near-term price impact; any effect is likely sentiment-only and quickly absorbed.

Evidence & confidence

The transaction is modest ($3,445.57) and the filing states no 10b5-1 plan, but insider buys of this size rarely change earnings or guidance expectations.

Market effects

Sector

No direct sector read-through beyond routine insider activity at a major semiconductor foundry.

Regional

None indicated; this is a US SEC insider filing for a Taiwan-listed issuer.

Global

Minimal; no new operational, regulatory, or demand information is disclosed.

Counterpoint

What could challenge this read

The lack of a 10b5-1 plan does not necessarily imply conviction; the buy could be routine compensation-related or personal liquidity timing.

Key entities

issuer
TSM
Taiwan Semiconductor Manufacturing Co. Ltd., subject of the Form 4 insider transaction disclosure.
insider
Chuang Tzu-Sou
VP at TSM who reported an open-market purchase of 47 shares on 2026-08-07.

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