Teradyne CEO/Director Files Form 144 for Routine $1.37M Share Sale

Executive Summary

On October 15, 2026, Gregory Stephen Smith, an Officer and Director of Teradyne, Inc. (NASDAQ: TER), filed a Form 144 notice disclosing the intent to sell 4,000 shares of common stock with an aggregate market value of approximately $1.37 million via Fidelity Brokerage Services LLC.

Transaction Details

• Securities to be Sold: 4,000 shares of Common Stock
• Aggregate Market Value: $1,365,120.00 (implied price of $341.28 per share)
• Shares Outstanding: 156,340,750 shares (proposed sale represents ~0.0026% of total shares)
• Nature of Acquisition: Restricted Stock Vesting on January 27, 2026
• Plan Adoption: Conducted pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on February 12, 2026

Prior Sales Context (Past 3 Months)

The filer has executed regular monthly sales of 4,000 shares under the same plan:

• 07/15/2026: 4,000 shares for $1,425,240.00
• 08/17/2026: 4,000 shares for $1,700,000.00
• 09/15/2026: 4,000 shares for $1,351,320.00

Market Impact & Significance

The trading significance is assessed as Low. The transaction is executed according to a pre-established Rule 10b5-1 plan, represents an immaterial fraction of Teradyne's total outstanding shares, and continues an identical scheduled monthly cadence from prior months.