Subsequent Events	3 Months Ended
Mar. 29, 2026
Subsequent Events [Abstract]
Subsequent Events	V. SUBSEQUENT EVENTS On April 8, 2026, Teradyne and MultiLane formed a joint venture, MultiLane Test Products (“MLTP”), to which MultiLane contributed the assets of its test and measurement business. MLTP is expected to serve the growing demand from the AI Data Center equipment market by accelerating the development of test solutions for critical high speed data connections. In connection with the formation of MLTP, Teradyne obtained a controlling 75% ownership interest in MLTP for a total purchase price of approximately $157.8 million, subject to customary post-closing adjustments. MLTP will be included in the Product Test Segment. On April 16, 2026, Teradyne acquired all of the issued and outstanding shares of TestInsight Ltd. (“TestInsight”) for a total purchase price of $29.0 million, subject to customary post-closing adjustments. TestInsight is a leading provider of semiconductor test development, validation, and conversion software widely used across the industry. TestInsight will be included in the Semiconductor Test Segment. Due to the limited time since the date of these transactions, certain business combination disclosures are not available or included in this filing.

Subsequent Events

3 Months Ended

Mar. 29, 2026

V. SUBSEQUENT EVENTS

On April 8, 2026, Teradyne and MultiLane formed a joint venture, MultiLane Test Products (“MLTP”), to which MultiLane contributed the assets of its test and measurement business. MLTP is expected to serve the growing demand from the AI Data Center equipment market by accelerating the development of test solutions for critical high speed data connections. In connection with the formation of MLTP, Teradyne obtained a controlling 75% ownership interest in MLTP for a total purchase price of approximately $157.8 million, subject to customary post-closing adjustments. MLTP will be included in the Product Test Segment.

On April 16, 2026, Teradyne acquired all of the issued and outstanding shares of TestInsight Ltd. (“TestInsight”) for a total purchase price of $29.0 million, subject to customary post-closing adjustments. TestInsight is a leading provider of semiconductor test development, validation, and conversion software widely used across the industry. TestInsight will be included in the Semiconductor Test Segment.

Due to the limited time since the date of these transactions, certain business combination disclosures are not available or included in this filing.