As of the latest Form 4 filed Jul 2, 2026.
What Teradyne Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 17 most recent filings for TER.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-02 | 2026-07-01 | JOHNSON MERCEDES Director | SSale | −167.00 | $460.00 | $76.8K | Yes (planned) | Form 4 ↗ |
| 2026-06-29 | 2026-06-25 | TUFANO PAUL J Director | AAward | +116.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-29 | 2026-06-25 | Henry Andrew Chisholm Director | AAward | +52.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-29 | 2026-06-25 | Herweck Peter Director | AAward | +63.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | MATZ MARILYN Director | SSale | −1.20K | $423.03 | $508K | Yes (planned) | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Smith Gregory Stephen President and CEO | SSale | −4.00K | $423.03 | $1.69M | Yes (planned) | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | MADDOCK ERNEST E Director | JOther | +2.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | Herweck Peter Director | JOther | +4.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-12 | TUFANO PAUL J Director | JOther | +19.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-03 | 2026-06-02 | Hathout Jean Pierre President, Teradyne Robotics | FTax | −174.00 | $392.62 | $68.3K | No | Form 4 ↗ |
| 2026-06-03 | 2026-06-02 | JOHNSON MERCEDES Director | SSale | −167.00 | $369.74 | $61.7K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-01 | Hathout Jean Pierre President, Teradyne Robotics | FTax | −267.00 | $369.47 | $98.6K | No | Form 4 ↗ |
| 2026-04-09 | 2026-04-08 | Mills Regan President, Product Test | SSale | −16.00 | $342.17 | $5.47K | Yes (planned) | Form 4 ↗ |
| 2026-04-07 | 2026-04-06 | JOHNSON MERCEDES Director | SSale | −625.00 | $312.20 | $195K | Yes (planned) | Form 4 ↗ |
| 2026-03-30 | 2026-03-26 | Herweck Peter Director | AAward | +92.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-30 | 2026-03-26 | TUFANO PAUL J Director | AAward | +159.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-30 | 2026-03-26 | Henry Andrew Chisholm Director | AAward | +75.00 | $0.00 | $0.00 | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also TER’s full analysis or the market-wide insider trading feed. The tabs above jump to TER’s other SEC data.
Source: SEC Form 4 filings for TER, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.