Teradyne Director Sold 400 Shares of Company Stock
The transaction follows a pre-arranged trading plan as the firm manages its recent share price appreciation.
Updated on Sept. 29, 2026 in Public Companies
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Teradyne director Marilyn Matz sold 400 shares of common stock on September 17, 2026, for a total of $140,444. The sale, executed at $351.11 per share, represents a non-discretionary move under a pre-existing trading plan.
Why it matters
The sale occurs as Teradyne stock has seen significant volatility, appreciating 209% over the past twelve months. Investors often monitor these structured sales to gauge insider sentiment amid broader market performance.
Director Marilyn Matz sold 400 shares for $140,444, leaving her with 13,840 shares of Teradyne common stock. This follows a period where the company, which reports $4.5 billion in trailing twelve-month revenue, saw its share price grow 209% over the prior year.
The players
Teradyne
A developer of automated test equipment for semiconductor and electronic manufacturers with $4.5 billion in trailing revenue.
Marilyn Matz
A director at Teradyne who manages equity holdings through a structured, non-discretionary Rule 10b5-1 trading plan.
The details
The transaction was processed on September 17, 2026, under a Rule 10b5-1 trading plan that was originally adopted by the director on February 13, 2026. Such plans allow insiders to schedule stock sales in advance to comply with securities regulations and avoid concerns regarding non-public information. Following this sale, Matz retains approximately 0.0089% of the company's total outstanding shares.
Timeline
February 13, 2026: The Rule 10b5-1 trading plan was adopted.
September 17, 2026: The director sold 400 shares of common stock.
September 29, 2026: The company announced the Magnum E2 test system.
Market Landscape
The use of a Rule 10b5-1 trading plan is standard practice across many public firms and aligns with industry trends for insider risk mitigation. This transaction follows the established compliance patterns mandated by the rule to separate executive trading activity from daily news.
Operators should view this trade as a scheduled administrative action rather than a signal regarding the company's upcoming product performance. Focus on the firm's $4.5 billion revenue stream and recent product updates rather than individual director trades.
The takeaway
Insider sales executed under Rule 10b5-1 plans typically reflect long-term portfolio management rather than immediate company outlook. Monitor filings for changes in plan adoption dates to detect shifts in executive confidence levels.
Further reading
For more on how major industry players handle equity, see Public Companies.
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