$TER

MATZ MARILYN sold $140K of TER

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

Original reporting
SEC EDGAR · MATZ MARILYN
Published Oct 22, 2026, 4:07 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Oct 22, 2026, 4:11 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.
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 disclosed sale is modest and unlikely to affect Teradyne's share price in the short term.

02

Market read

A routine insider sale with limited market impact; primarily of interest to compliance and monitoring teams.

03

What to watch

Potential future insider transactions or larger stake changes could become material, but none are indicated here.

Relevance 3/10Novelty 3/10Timing: filed today

Background

SEC Form 4 filings disclose insider transactions. Directors often use 10b5‑1 plans to pre‑arrange sales.

Company-level read

Ticker impact

$TERNeutralHigh confidence
Context

Director Marilyn Matz sold 400 shares of Teradyne for $140,000 via a 10b5‑1 plan, reducing her stake to 12,641 shares.

Expected impact

likely minimal pressure as the market prices in the small insider sell.

Evidence & confidence

A $140k sale by a director represents a small fraction of float and is disclosed via Form 4, providing no new catalyst for price movement.

Market effects

None; the transaction is company‑specific and does not affect the broader semiconductor equipment sector.

None; the filing is U.S.‑focused and limited to Teradyne.

None; no global market effect.

Counterpoint

The sale could be interpreted as a signal of insider concern, but the size is too small to warrant a contrarian trade.

Key entities

  • Teradyne, Inc.

    U.S. semiconductor equipment manufacturer (ticker TER).

  • Marilyn Matz

    Director of Teradyne who sold shares.

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.

Related articles

$FORMHighAI 8/10

FormFactor and Teradyne announce collaboration, $300M investment

FormFactor (FORM) and Teradyne (TER) announced a collaboration and $300M investment in semiconductor test and measurement technologies. The deal aims to combine FormFactor's probe technologies with Teradyne's automated test platforms, focusing on high-performance compute and advanced packaging applications. The transaction is subject to regulatory approvals.