A Form 4 filed on August 18, 2026 discloses that Marilyn Matz, a director of Teradyne, Inc. (NASDAQ:TER), sold 1,200 shares of common stock on August 17, 2026 at a price of $425 per share under a pre-established Rule 10b5-1 trading plan.

Key Highlights

  • Reporting person: Marilyn Matz, identified as a Director of Teradyne, Inc.
  • Transaction: 1,200 shares of common stock disposed of (transaction code S) on August 17, 2026.
  • Price per share: $425, as reported in the filing.
  • Remaining ownership: 15,040.675 shares of common stock beneficially owned directly following the transaction.
  • 10b5-1 plan: The sale was made pursuant to a trading plan adopted by Matz on February 13, 2026, intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.

Teradyne Director Marilyn Matz Reports August 2026 Common Stock Sale

According to the Form 4 filed with the U.S. Securities and Exchange Commission, Marilyn Matz, a director of Teradyne, Inc., disposed of 1,200 shares of Teradyne common stock on August 17, 2026. The filing reports the per-share price as $425 and indicates the transaction was a sale (transaction code S) executed directly by the reporting person.

The filing discloses that the sale was effected pursuant to a sales plan that Matz adopted on February 13, 2026, and that the plan was intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934. The Form 4 checkbox indicates the transaction was made pursuant to a contract, instruction, or written plan satisfying the affirmative defense conditions of Rule 10b5-1(c). Following the reported transaction, the filing states that Matz directly and beneficially owns 15,040.675 shares of Teradyne common stock. No derivative securities transactions were reported in Table II of the filing.

The Form 4 was signed by Ryan E. Driscoll as Attorney-in-Fact on August 18, 2026, the same date it was filed. No amendment to a prior filing was indicated.

What Was Disclosed

The filing reports a single sale of 1,200 shares of Teradyne common stock by director Marilyn Matz at $425 per share on August 17, 2026, conducted under a Rule 10b5-1 plan adopted February 13, 2026, leaving her with direct beneficial ownership of 15,040.675 shares.