Teradyne Director Marilyn Matz Files Form 144 to Sell 400 Shares

Insider Filing Analysis: Form 144

Company: Teradyne, Inc. (NASDAQ: TER)
Insider: Marilyn Matz (Director)
Filing Date: October 21, 2026

Transaction Summary

• Security: Common Stock
• Shares Proposed for Sale: 400 shares
• Estimated Aggregate Market Value: $140,000.00 (~$350.00 per share)
• Approximate Sale Date: October 21, 2026
• Broker: Fidelity Brokerage Services LLC

Origin and History

• Acquisition History: Acquired on May 9, 2024, via restricted stock vesting as equity compensation from the issuer.
• Pre-Arranged Plan: Executed pursuant to a Rule 10b5-1 trading plan adopted on February 13, 2026.
• Recent Prior Activity (Past 3 Months):
  • August 17, 2026: 1,200 shares ($510,000.00)
  • September 15, 2026: 800 shares ($270,264.00)
  • September 17, 2026: 400 shares ($140,444.00)
  • October 15, 2026: 800 shares ($273,024.00)

Market & Trading Impact

• Trading Significance: Low. The proposed transaction of 400 shares represents a negligible fraction of Teradyne's 156,340,750 outstanding shares. Furthermore, the sale is being conducted under a pre-established Rule 10b5-1 plan, indicating regular scheduled liquidity rather than a discretionary market-timing decision.