Updated Jul 16, 2026 · Last SEC filing 2026-07-02
TERADYNE, INC (TER) has filed 24 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-02. 2 Form 8-K material event filings were reported by TER in the last 90 days. 12 Form 144 notices of proposed sale were filed for TER stock. InsiderAlpha tracks every TER SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Instruments For Meas & Testing of Electricity & Elec Signals (SIC 3825) |
|---|---|
| SEC CIK | 0000097210 |
| Form 4 filings (90d) | 24 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 12 |
| Latest Form 4 filing | 2026-07-02 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| JOHNSON MERCEDES | Director | S — Open-market sale | 167 | $460.00 | $77K | SEC | |
| Herweck Peter | Director | A — Grant or award | 63 | $0.00 | — | SEC | |
| TUFANO PAUL J | Director | A — Grant or award | 116 | $0.00 | — | SEC | |
| Henry Andrew Chisholm | Director | A — Grant or award | 52 | $0.00 | — | SEC | |
| MATZ MARILYN | Director | S — Open-market sale | 1.2K | $423.03 | $508K | SEC | |
| Smith Gregory Stephen | President and CEO | S — Open-market sale | 4.0K | $423.03 | $1.69M | SEC | |
| Herweck Peter | Director | J — Other acquisition / disposition | 4 | $0.00 | — | SEC | |
| TUFANO PAUL J | Director | J — Other acquisition / disposition | 19 | $0.00 | — | SEC | |
| MADDOCK ERNEST E | Director | J — Other acquisition / disposition | 2 | $0.00 | — | SEC | |
| Hathout Jean Pierre | President, Teradyne Robotics | F — Tax withholding / forfeiture | 174 | $392.62 | $68K | SEC | |
| JOHNSON MERCEDES | Director | S — Open-market sale | 167 | $369.74 | $62K | SEC | |
| Hathout Jean Pierre | President, Teradyne Robotics | F — Tax withholding / forfeiture | 267 | $369.47 | $99K | SEC | |
| Poulin Shannon John | President, Semiconductor Test | S — Open-market sale | 656 | $355.00 | $233K | SEC | |
| Poulin Shannon John | President, Semiconductor Test | M — Option exercise | 2.8K | $82.61 | $235K | SEC | |
| Poulin Shannon John | President, Semiconductor Test | S — Open-market sale | 1.0K | $345.37 | $348K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for TERADYNE, INC (TER). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Poulin Shannon John | 5 | $1.35M |
| MATZ MARILYN | 4 | $919K |
| Smith Gregory Stephen | 4 | $4.94M |
| TUFANO PAUL J | 3 | — |
| Herweck Peter | 3 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in TER insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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