Transactions
10
Insider / TERADYNE, INC
Herweck Peter
Director at TERADYNE, INC
- Company
- TERADYNE, INC
- Ticker
- TER
- First filing on record
- October 1, 2025
- Latest trade on record
- September 25, 2026
- SEC filings
- EDGAR ↗
Herweck Peter, Director at TERADYNE, INC, has disclosed 10 transactions in TER since October 1, 2025: 0 purchases (0 open-market buys) and 0 sales, worth about $0 at the reported prices. The latest was filed September 28, 2026, 3 days after the trade.
Open-market buys
0
Sales
0
Avg. disclosure lag
3.3d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Herweck Peter reported 9 transactions that were neither a purchase nor a sale, such as stock awards, option exercises or shares withheld for tax.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 of 8 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| A | Grant or award | 5 | 1,048 | — |
| J | Other acquisition or disposal | 5 | 29 | — |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 7 | 0 | 0 |
| 2025 | 3 | 0 | 0 |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| TER | Other J | September 25, 2026 | September 28, 2026 | 3d | 4 | — | — | Form 4 ↗ | ||
| TER | Other A | September 24, 2026 | September 28, 2026 | 4d | 77 | — | — | Form 4 ↗ | ||
| TER | Other A | June 25, 2026 | June 29, 2026 | 4d | 63 | — | — | Form 4 ↗ | ||
| TER | Other J | June 12, 2026 | June 16, 2026 | 4d | 4 | — | — | Form 4 ↗ | ||
| TER | Other A | May 8, 2026 | May 12, 2026 | 4d | 668 | — | — | Form 4 ↗ | ||
| TER | Other A | March 26, 2026 | March 30, 2026 | 4d | 92 | — | — | Form 4 ↗ | ||
| TER | Other J | March 13, 2026 | March 17, 2026 | 4d | 5 | — | — | Form 4 ↗ | ||
| TER | Other J | December 17, 2025 | December 19, 2025 | 2d | 7 | — | — | Form 4 ↗ | ||
| TER | Other A | December 17, 2025 | December 19, 2025 | 2d | 148 | — | — | Form 4 ↗ | ||
| TER | Other J | September 29, 2025 | October 1, 2025 | 2d | 9 | — | — | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| September 28, 2026 | Form 4 | 0000904454-26-000498 | 2 | published | EDGAR ↗ |
| June 29, 2026 | Form 4 | 0000904454-26-000381 | 1 | published | EDGAR ↗ |
| June 16, 2026 | Form 4 | 0000904454-26-000356 | 1 | published | EDGAR ↗ |
| May 12, 2026 | Form 4 | 0000904454-26-000276 | 1 | published | EDGAR ↗ |
| March 30, 2026 | Form 4 | 0000904454-26-000210 | 1 | published | EDGAR ↗ |
| March 17, 2026 | Form 4 | 0000904454-26-000184 | 1 | published | EDGAR ↗ |
| December 19, 2025 | Form 4 | 0000904454-25-000638 | 2 | published | EDGAR ↗ |
| October 1, 2025 | Form 4 | 0000904454-25-000466 | 1 | published | EDGAR ↗ |
Other insiders at TERADYNE, INC
- Smith Gregory Stephen President and CEO 20 rows
- JOHNSON MERCEDES Director 15 rows
- TUFANO PAUL J Director 10 rows
- MATZ MARILYN Director 9 rows
- Mills Regan President, Product Test 9 rows
- Poulin Shannon John President, Semiconductor Test 8 rows
- Driscoll Ryan VP, General Counsel, Secretary 6 rows
- MADDOCK ERNEST E Director 6 rows
- Hathout Jean Pierre President, Teradyne Robotics 5 rows
- Henry Andrew Chisholm Director 4 rows
Everyone on file, with contracts and lobbying under the company's name: TERADYNE, INC.
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 8 | 10 | October 1, 2025 | September 28, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.