TERADYNE, INC insider transactions

What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78. — In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

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2026-10-02	2026-10-01	JOHNSON MERCEDES	S	167	$402.9	Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-01 and its public availability date is 2026-10-02. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0000904454-26-000502 ↗SEC accession 0000904454-26-000498 ↗SEC accession 0000904454-26-000496 ↗

Recent insider disclosures

Inspect all 11 displayed rows: Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

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2026-10-02	2026-10-01	JOHNSON MERCEDES	S	167	$402.9	Not reported
2026-09-28	2026-09-24	Herweck Peter	A	77	$0	Not reported
2026-09-28	2026-09-24	TUFANO PAUL J	A	141	$0	Not reported
2026-09-28	2026-09-24	Henry Andrew Chisholm	A	64	$0	Not reported
2026-09-18	2026-09-17	MATZ MARILYN	S	400	$351.11	Not reported
2026-09-16	2026-09-15	Smith Gregory Stephen	S	4,000	$337.83	Not reported
2026-09-16	2026-09-15	MATZ MARILYN	S	800	$337.83	Not reported
2026-09-03	2026-09-01	JOHNSON MERCEDES	S	167	$341.3	Not reported
2026-08-19	2026-08-17	Smith Gregory Stephen	S	4,000	$425	Not reported
2026-08-19	2026-08-17	MATZ MARILYN	S	1,200	$425	Not reported
2026-08-05	2026-08-03	JOHNSON MERCEDES	S	166	$358.15	Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 25 displayed rows: Officers and directors in the directory

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Gray Charles Jeffrey	0001461137	86
Vahey Walter G.	0001553425	28
MATZ MARILYN	0001618274	14
VALLEE ROY	0001220020	109
BRADLEY MICHAEL A	0001198621	214
JAGIELA MARK E	0001252396	68
MADDOCK ERNEST E	0001227050	19
GILLIS EDWIN J	0001186557	17
Tempesta Daniel David	0001383680	171
BAGLEY JAMES W	0001016317	36
Beecher Gregory R	0001239380	57
Burns Richard John	0001357050	38
CARNESALE ALBERT	0001239382	10
CHRISTMAN DANIEL W	0001199143	76
Driscoll Ryan	0001479936	5
GUERTIN TIMOTHY E	0001217440	90
HOTCHKISS JEFFREY R	0001275985	45
JOHNSON MERCEDES	0001225110	65
Mehta Sanjay	0001775135	23
Mills Regan	0002062527	3
O REILLY VINCENT M	0001157849	6
Poulin Shannon John	0002065866	2
Robbins Brad	0001618272	39
Smith Gregory Stephen	0001666934	42
TUFANO PAUL J	0001201520	17

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.