Teradyne (NASDAQ: TER) CEO sells 4,000 shares in a planned stock trade

What happened

Teradyne, Inc. (NASDAQ: TER) President and CEO and director Gregory Stephen Smith sold 4,000 shares of common stock on 10/15/2026. The shares sold at $341.28 each, for about $1.37 million. After the sale, Smith held 104,495.4075 shares. The filing says the trade was made under a Rule 10b5-1 plan adopted on February 12, 2026.

The Form 4 names Teradyne and ticker TER and lists Smith as the reporting person. It shows one common stock sale in the non-derivative table and no derivative transaction. Direct ownership is marked D in the table. The filing was signed on 10/19/2026.

Key numbers

Metric	Latest	Change	Source
Shares sold	4,000 shares		SEC Form 4
Sale price per share	$341.28		SEC Form 4
Total sale value	about $1.37 million		SEC Form 4
Shares held after sale	104,495.4075 shares		SEC Form 4

Read more: Teradyne (TER) stock analysis and investment case

Why it matters

OptimistFi's case is that Teradyne is a cyclical but high-quality test-and-automation franchise. Its value depends on chip complexity and factory automation turning into revenue without hurting historically strong gross margins and cash conversion. This filing does not update revenue, margins or cash conversion, so it leaves that operating thesis intact.

OptimistFi's calculation shows the 4,000 shares were about 3.7% of Smith's pre-trade holding. Smith still held 104,495.4075 shares after the sale, so the disposition reduced the stake but did not remove it. The main caveat is that the sale was made under a Rule 10b5-1 plan adopted on February 12, 2026, so it may not reflect a fresh discretionary view.

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What's next

The next quarterly report or next insider filing will show whether more scheduled sales continue or whether holdings stabilize. Until then, this Form 4 mainly shows that a planned sale took place on 10/15/2026 at $341.28 per share. For investors, the question is whether later filings show the same pattern or a different pace of selling.

The filing's only scheduled reference is the sales plan adopted on February 12, 2026. If later Form 4s show more sales under that plan, the disclosure would stay consistent with prearranged trading. If holdings hold steady, this filing would remain a one-off sale.

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