SEC Form 4 · Updated Daily
TER
— TERADYNE, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Smith Gregory Stephen | Director · Officer | 112,495.408 | 2026-08-17 | S |
| TUFANO PAUL J | Director | 65,848 | 2026-06-25 | A |
| Herweck Peter | Director | 16,201 | 2026-06-25 | A |
| Poulin Shannon John | Officer | 15,721.578 | 2026-05-22 | S |
| MATZ MARILYN | Director | 15,040.675 | 2026-08-17 | S |
| Mills Regan | Officer | 11,399.345 | 2026-04-08 | S |
| MADDOCK ERNEST E | Director | 10,267 | 2026-06-12 | J |
| Hathout Jean Pierre | Officer | 9,733 | 2026-06-02 | F |
| Driscoll Ryan | Officer | 7,665.305 | 2026-05-07 | S |
| JOHNSON MERCEDES | Director | 6,364 | 2026-09-01 | S |
| van Kralingen Bridget A | Director | 6,224 | 2026-05-08 | A |
| Henry Andrew Chisholm | Director | 2,927 | 2026-06-25 | A |
| Sayiner Necip | Director | 2,800 | 2026-05-08 | A |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-01 | JOHNSON MERCEDES | Open-market sale | 167 | $341.30 | 6,364 |
| 2026-08-17 | MATZ MARILYN | Open-market sale | 1,200 | $425.00 | 15,040.675 |
| 2026-08-17 | Smith Gregory Stephen | Open-market sale | 4,000 | $425.00 | 112,495.408 |
| 2026-08-03 | JOHNSON MERCEDES | Open-market sale | 166 | $358.15 | 6,531 |
| 2026-07-15 | MATZ MARILYN | Open-market sale | 1,200 | $356.31 | 16,240.675 |
| 2026-07-15 | Smith Gregory Stephen | Open-market sale | 4,000 | $356.31 | 116,495.408 |
| 2026-07-01 | JOHNSON MERCEDES | Open-market sale | 167 | $460.00 | 6,697 |
| 2026-06-25 | Herweck Peter | Grant / award | 63 | $0.00 | 16,201 |
| 2026-06-25 | Henry Andrew Chisholm | Grant / award | 52 | $0.00 | 2,927 |
| 2026-06-25 | TUFANO PAUL J | Grant / award | 116 | $0.00 | 65,848 |
| 2026-06-15 | Smith Gregory Stephen | Open-market sale | 4,000 | $423.03 | 120,469.573 |
| 2026-06-15 | MATZ MARILYN | Open-market sale | 1,200 | $423.03 | 17,440.675 |
| 2026-06-12 | TUFANO PAUL J | J | 19 | $0.00 | 65,732 |
| 2026-06-12 | Herweck Peter | J | 4 | $0.00 | 16,138 |
| 2026-06-12 | MADDOCK ERNEST E | J | 2 | $0.00 | 10,267 |
| 2026-06-02 | JOHNSON MERCEDES | Open-market sale | 167 | $369.74 | 6,864 |
| 2026-06-02 | Hathout Jean Pierre | Tax withholding | 174 | $392.62 | 9,733 |
| 2026-06-01 | Hathout Jean Pierre | Tax withholding | 267 | $369.47 | 9,907 |
| 2026-05-22 | Poulin Shannon John | Open-market sale | 656 | $355.00 | 15,721.578 |
| 2026-05-21 | MATZ MARILYN | Open-market sale | 400 | $350.00 | 18,640.675 |
| 2026-05-21 | Poulin Shannon John | Option exercise (derivative) | 2,843 | $0.00 | 8,532 |
| 2026-05-21 | Poulin Shannon John | Tax withholding | 1,531 | $345.98 | 16,377.578 |
| 2026-05-21 | Poulin Shannon John | Option exercise | 2,843 | $82.61 | 17,908.578 |
| 2026-05-21 | Poulin Shannon John | Open-market sale | 1,008 | $345.37 | 15,065.578 |
| 2026-05-15 | MATZ MARILYN | Open-market sale | 800 | $338.98 | 19,040.675 |
| 2026-05-15 | Smith Gregory Stephen | Option exercise (derivative) | 4,597 | $0.00 | 0 |
| 2026-05-15 | Smith Gregory Stephen | Open-market sale | 8,597 | $338.98 | 124,469.573 |
| 2026-05-15 | Smith Gregory Stephen | Option exercise | 4,597 | $72.10 | 133,066.573 |
| 2026-05-08 | Henry Andrew Chisholm | Grant / award | 668 | $0.00 | 2,875 |
| 2026-05-08 | MADDOCK ERNEST E | Grant / award | 668 | $0.00 | 10,265 |
| 2026-05-08 | Sayiner Necip | Grant / award | 668 | $0.00 | 2,800 |
| 2026-05-08 | TUFANO PAUL J | Grant / award | 668 | $0.00 | 65,713 |
| 2026-05-08 | van Kralingen Bridget A | Grant / award | 668 | $0.00 | 6,224 |
| 2026-05-08 | MATZ MARILYN | Grant / award | 668 | $0.00 | 19,840.675 |
| 2026-05-08 | JOHNSON MERCEDES | Grant / award | 668 | $0.00 | 7,031 |
| 2026-05-08 | Herweck Peter | Grant / award | 668 | $0.00 | 16,134 |
| 2026-05-07 | Driscoll Ryan | Open-market sale | 680 | $377.60 | 7,665.305 |
| 2026-04-08 | Mills Regan | Open-market sale | 16 | $342.17 | 11,399.345 |
| 2026-04-06 | JOHNSON MERCEDES | Open-market sale | 625 | $312.20 | 6,363 |
| 2026-04-02 | Mills Regan | Open-market sale | 252 | $290.88 | 11,415.345 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.