$TSM

Lin Shyue-Shyh purchased $72K of TSM (indirect holdings)

Lin Shyue-Shyh (VP) purchased 1,000 indirectly-held shares of TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) at $71.94 on 2026-07-19.

Original reporting
SEC EDGAR · Lin Shyue-Shyh
Published Jul 21, 2026, 10:44 AM UTC
Analysis
alphai AI DeskAI-generated
Added to alphai Jul 21, 2026, 11:04 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.
alphai market briefInsider activity
Primary signal
$TSM
Bullish
medium confidence
Mentioned
$TSM
Relevance
4/10
alphai data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$TSMBullishLow
01

Why it matters

The only new fact is the reported open-market purchase details (shares, price, date, and post-transaction holdings). There is no accompanying corporate event, guidance, or operational update.

02

Market read

Traders may note the insider buy as a small sentiment input, but it is unlikely to drive a material repricing without additional fundamental catalysts.

03

What to watch

The filing states no pre-arranged 10b5-1 plan, but the article does not provide intent, timing constraints, or whether the purchase is part of a broader pattern.

Relevance 4/10Novelty 3/10Timing: after-hours filing on 2026-07-21 for a 2026-07-19 purchase

Background

The article is an SEC Form 4 insider transaction disclosure for TSM, reported by VP Lin Shyue-Shyh with indirect holdings.

Company-level read

Ticker impact

$TSMBullishMedium confidence
Context

VP Lin Shyue-Shyh filed a Form 4 open-market purchase of 1,000 TSM shares at $71.94 on 2026-07-19.

Expected impact

Low likelihood of a sustained price move; any reaction is likely limited to short-term sentiment.

Evidence & confidence

The disclosure is primary-source (SEC Form 4) but the transaction size ($71,940) is relatively small and does not include new company fundamentals or guidance.

Market effects

No direct sector read-across; this is an individual insider transaction without operational or guidance implications.

No clear regional market impact beyond potential micro-sentiment for Taiwan semiconductor exposure.

Limited global relevance; does not introduce new information about supply, demand, or technology roadmap.

Counterpoint

Insider buys can be routine portfolio rebalancing and may not signal a view on near-term fundamentals, especially with indirect holdings.

Key entities

  • TSM

    Taiwan Semiconductor Manufacturing Co. Ltd., subject of the Form 4 insider transaction disclosure.

  • Lin Shyue-Shyh

    VP who reported an open-market purchase of 1,000 shares at $71.94 on 2026-07-19 via indirect holdings.

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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