$TER

MATZ MARILYN sold $140K of TER

MATZ MARILYN sold 400 shares of TERADYNE, INC (TER) at $350.00 ($0.14M total) on 2026-05-21 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · MATZ MARILYN
Published May 26, 2026, 4:00 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 6, 2026, 5:30 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
$TER
Neutral
high confidence
Mentioned
$TER
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$TERNeutralLow
01

Why it matters

The newest disclosed fact is the open-market sale of 400 shares at $350/share on 2026-05-21, reported via a pre-arranged 10b5-1 plan.

02

Market read

Traders may note the insider sale for sentiment, but the 10b5-1 framing and modest size reduce expected fundamental impact.

03

What to watch

The article provides no information on whether other insiders sold/bought around the same period, nor any change in overall insider activity beyond this single director transaction.

Relevance 3/10Novelty 3/10Timing: filed 2026-05-26, transaction dated 2026-05-21

Background

The article is a SEC Form 4 insider transaction disclosure for Teradyne, Inc. (TER) by director Matz Marilyn.

Company-level read

Ticker impact

$TERNeutralHigh confidence
Context

Teradyne director Matz Marilyn sold 400 shares at $350/share under a pre-arranged 10b5-1 plan, totaling $140,000.

Expected impact

Likely minimal price impact; any reaction should fade unless accompanied by other company-specific news.

Evidence & confidence

The filing is a Form 4 insider transaction with a stated pre-arranged 10b5-1 plan, and the disclosed sale size is modest relative to a large-cap’s typical trading flow.

Market effects

No direct sector read-through; this is an individual insider sale rather than a company guidance or operational change.

None indicated.

None indicated.

Counterpoint

Even with a 10b5-1 plan, repeated insider selling can reflect personal liquidity needs or risk management rather than bearish fundamentals, so the market may overreact.

Key entities

  • Teradyne, Inc.

    US-listed semiconductor test equipment company subject of the Form 4 insider transaction.

  • Matz Marilyn

    Director who executed an open-market sale under a pre-arranged 10b5-1 plan.

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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