TER
Teradyne Inc
NASDAQ: TER · TECHNOLOGY · SEMICONDUCTOR EQUIPMENT & MATERIALS
$313.24
-3.23% today
Updated 2026-10-28
Market cap
$50.81B
P/E ratio
44.64
P/S ratio
11.38x
EPS (TTM)
$7.28
Dividend yield
0.15%
52W range
$136 – $488
Volume
2.7M
Teradyne Inc (TER) Insider transactions
Net insider activity
Net buying (40,600 shares)
Buy transactions
48
Sell transactions
52
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-10-01 | JOHNSON, MERCEDES | Director | Sale | 167 | $402.90 | $67284.30 |
| 2026-09-25 | TUFANO, PAUL J | Director | Buy | 19 | — | — |
| 2026-09-25 | MADDOCK, ERNEST E | Director | Buy | 2 | — | — |
| 2026-09-25 | HERWECK, PETER | Director | Buy | 4 | — | — |
| 2026-09-24 | TUFANO, PAUL J | Director | Buy | 141 | — | — |
| 2026-09-24 | HERWECK, PETER | Director | Buy | 77 | — | — |
| 2026-09-24 | HENRY, ANDREW CHISHOLM | Director | Buy | 64 | — | — |
| 2026-09-17 | MATZ, MARILYN | Director | Sale | 400 | $351.11 | $140444.00 |
| 2026-09-15 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 4,000 | $337.83 | $1.35M |
| 2026-09-15 | MATZ, MARILYN | Director | Sale | 800 | $337.83 | $270264.00 |
| 2026-09-01 | JOHNSON, MERCEDES | Director | Sale | 167 | $341.30 | $56997.10 |
| 2026-08-17 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 4,000 | $425.00 | $1.70M |
| 2026-08-17 | MATZ, MARILYN | Director | Sale | 1,200 | $425.00 | $510000.00 |
| 2026-08-03 | JOHNSON, MERCEDES | Director | Sale | 166 | $358.15 | $59452.90 |
| 2026-07-15 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 4,000 | $356.31 | $1.43M |
| 2026-07-15 | MATZ, MARILYN | Director | Sale | 1,200 | $356.31 | $427572.00 |
| 2026-07-01 | JOHNSON, MERCEDES | Director | Sale | 167 | $460.00 | $76820.00 |
| 2026-06-25 | TUFANO, PAUL J | Director | Buy | 116 | — | — |
| 2026-06-25 | HERWECK, PETER | Director | Buy | 63 | — | — |
| 2026-06-25 | HENRY, ANDREW CHISHOLM | Director | Buy | 52 | — | — |
| 2026-06-15 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 4,000 | $423.03 | $1.69M |
| 2026-06-15 | MATZ, MARILYN | Director | Sale | 1,200 | $423.03 | $507636.00 |
| 2026-06-12 | TUFANO, PAUL J | Director | Buy | 19 | — | — |
| 2026-06-12 | MADDOCK, ERNEST E | Director | Buy | 2 | — | — |
| 2026-06-12 | HERWECK, PETER | Director | Buy | 4 | — | — |
| 2026-06-02 | JOHNSON, MERCEDES | Director | Sale | 167 | $369.74 | $61746.58 |
| 2026-06-02 | HATHOUT, JEAN PIERRE | President, Teradyne Robotics | Sale | 174 | $392.62 | $68315.88 |
| 2026-06-01 | HATHOUT, JEAN PIERRE | President, Teradyne Robotics | Sale | 267 | $369.47 | $98648.49 |
| 2026-05-22 | POULIN, SHANNON JOHN | President, Semiconductor Test | Sale | 656 | $355.00 | $232880.00 |
| 2026-05-21 | POULIN, SHANNON JOHN | President, Semiconductor Test | Sale | 2,843 | — | — |
| 2026-05-21 | POULIN, SHANNON JOHN | President, Semiconductor Test | Buy | 2,843 | $82.61 | $234860.23 |
| 2026-05-21 | POULIN, SHANNON JOHN | President, Semiconductor Test | Sale | 1,531 | $345.98 | $529695.38 |
| 2026-05-21 | POULIN, SHANNON JOHN | President, Semiconductor Test | Sale | 1,008 | $345.37 | $348132.96 |
| 2026-05-21 | MATZ, MARILYN | Director | Sale | 400 | $350.00 | $140000.00 |
| 2026-05-15 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 4,597 | — | — |
| 2026-05-15 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 8,597 | $338.98 | $2.91M |
| 2026-05-15 | SMITH, GREGORY STEPHEN | Director, President and CEO | Buy | 4,597 | $72.10 | $331443.70 |
| 2026-05-15 | MATZ, MARILYN | Director | Sale | 800 | $338.98 | $271184.00 |
| 2026-05-08 | VAN, KRALINGEN BRIDGET A | Director | Buy | 668 | — | — |
| 2026-05-08 | TUFANO, PAUL J | Director | Buy | 668 | — | — |
| 2026-05-08 | SAYINER, NECIP | Director | Buy | 668 | — | — |
| 2026-05-08 | MATZ, MARILYN | Director | Buy | 668 | — | — |
| 2026-05-08 | MADDOCK, ERNEST E | Director | Buy | 668 | — | — |
| 2026-05-08 | JOHNSON, MERCEDES | Director | Buy | 668 | — | — |
| 2026-05-08 | HERWECK, PETER | Director | Buy | 668 | — | — |
| 2026-05-08 | HENRY, ANDREW CHISHOLM | Director | Buy | 668 | — | — |
| 2026-05-07 | DRISCOLL, RYAN | VP, General Counsel, Secretary | Sale | 680 | $377.60 | $256768.00 |
| 2026-04-08 | MILLS, REGAN | President, Product Test | Sale | 16 | $342.17 | $5474.72 |
| 2026-04-06 | JOHNSON, MERCEDES | Director | Sale | 625 | $312.20 | $195125.00 |
| 2026-04-02 | MILLS, REGAN | President, Product Test | Sale | 252 | $290.88 | $73301.76 |
| 2026-04-01 | POULIN, SHANNON JOHN | President, Semiconductor Test | Sale | 1,162 | $312.20 | $362776.40 |
| 2026-04-01 | MILLS, REGAN | President, Product Test | Sale | 222 | $312.20 | $69308.40 |
| 2026-03-26 | TUFANO, PAUL J | Director | Buy | 159 | — | — |
| 2026-03-26 | HERWECK, PETER | Director | Buy | 92 | — | — |
| 2026-03-26 | HENRY, ANDREW CHISHOLM | Director | Buy | 75 | — | — |
| 2026-03-13 | TUFANO, PAUL J | Director | Buy | 25 | — | — |
| 2026-03-13 | MADDOCK, ERNEST E | Director | Buy | 2 | — | — |
| 2026-03-13 | HERWECK, PETER | Director | Buy | 5 | — | — |
| 2026-03-05 | JOHNSON, MERCEDES | Director | Sale | 625 | $299.20 | $187000.00 |
| 2026-02-25 | MILLS, REGAN | President, Product Test | Sale | 788 | $332.87 | $262301.56 |
| 2026-02-05 | JOHNSON, MERCEDES | Director | Sale | 625 | $266.98 | $166862.50 |
| 2026-02-04 | SMITH, GREGORY STEPHEN | Director, President and CEO | Buy | 11,810 | — | — |
| 2026-02-04 | SMITH, GREGORY STEPHEN | Director, President and CEO | Buy | 13,380 | — | — |
| 2026-02-04 | POULIN, SHANNON JOHN | President, Semiconductor Test | Buy | 3,937 | — | — |
| 2026-02-04 | POULIN, SHANNON JOHN | President, Semiconductor Test | Buy | 4,460 | — | — |
| 2026-02-04 | MILLS, REGAN | President, Product Test | Buy | 886 | — | — |
| 2026-02-04 | MILLS, REGAN | President, Product Test | Buy | 1,004 | — | — |
| 2026-02-04 | HATHOUT, JEAN PIERRE | President, Teradyne Robotics | Buy | 886 | — | — |
| 2026-02-04 | HATHOUT, JEAN PIERRE | President, Teradyne Robotics | Buy | 1,004 | — | — |
| 2026-02-04 | DRISCOLL, RYAN | VP, General Counsel, Secretary | Buy | 1,575 | — | — |
| 2026-02-04 | DRISCOLL, RYAN | VP, General Counsel, Secretary | Buy | 1,784 | — | — |
| 2026-02-02 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 6,763 | $249.53 | $1.69M |
| 2026-02-02 | MILLS, REGAN | President, Product Test | Sale | 345 | $249.53 | $86087.85 |
| 2026-02-02 | HATHOUT, JEAN PIERRE | President, Teradyne Robotics | Sale | 381 | $249.53 | $95070.93 |
| 2026-02-02 | DRISCOLL, RYAN | VP, General Counsel, Secretary | Sale | 414 | $249.53 | $103305.42 |
| 2026-01-28 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 486 | $250.48 | $121733.28 |
| 2026-01-28 | MILLS, REGAN | President, Product Test | Sale | 167 | $250.48 | $41830.16 |
| 2026-01-28 | DRISCOLL, RYAN | VP, General Counsel, Secretary | Sale | 82 | $250.48 | $20539.36 |
| 2026-01-27 | SMITH, GREGORY STEPHEN | Director, President and CEO | Buy | 59,475 | — | — |
| 2026-01-27 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 30,610 | $238.94 | $7.31M |
| 2026-01-27 | MILLS, REGAN | President, Product Test | Sale | 193 | $238.94 | $46115.42 |
| 2026-01-27 | DRISCOLL, RYAN | VP, General Counsel, Secretary | Sale | 113 | $238.94 | $27000.22 |
| 2026-01-05 | JOHNSON, MERCEDES | Director | Sale | 625 | $211.85 | $132406.25 |
| 2025-12-17 | TUFANO, PAUL J | Director | Buy | 256 | — | — |
| 2025-12-17 | TUFANO, PAUL J | Director | Buy | 36 | — | — |
| 2025-12-17 | MADDOCK, ERNEST E | Director | Buy | 2 | — | — |
| 2025-12-17 | HERWECK, PETER | Director | Buy | 148 | — | — |
| 2025-12-17 | HERWECK, PETER | Director | Buy | 7 | — | — |
| 2025-12-12 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 1,108 | $201.31 | $223051.48 |
| 2025-12-05 | JOHNSON, MERCEDES | Director | Sale | 625 | $200.00 | $125000.00 |
| 2025-11-12 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 1,108 | $180.20 | $199661.60 |
| 2025-11-05 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 2,072 | — | — |
| 2025-11-05 | SMITH, GREGORY STEPHEN | Director, President and CEO | Buy | 2,072 | $36.75 | $76146.00 |
| 2025-11-05 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 1,224 | $177.05 | $216709.20 |
| 2025-11-05 | JOHNSON, MERCEDES | Director | Sale | 625 | $177.05 | $110656.25 |
| 2025-11-03 | TURNER, MICHELLE L. | Chief Financial Officer | Buy | 9,156 | — | — |
| 2025-11-03 | TURNER, MICHELLE L. | Chief Financial Officer | Buy | 11,144 | — | — |
| 2025-10-10 | SMITH, GREGORY STEPHEN | Director, President and CEO | Sale | 1,108 | $145.24 | $160925.92 |
| 2025-10-06 | JOHNSON, MERCEDES | Director | Sale | 625 | $147.90 | $92437.50 |
| 2025-09-29 | TUFANO, PAUL J | Director | Buy | 49 | — | — |
Frequently asked questions
Are TER insiders buying or selling?
Over the transactions on record, TER insiders have been net sellers, with about $25.33M in stock sold across 52 sales, against 3 open-market purchases.
Does insider selling at TER mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which TER insiders are selling the most?
Recent selling is concentrated in a few names. SMITH, GREGORY STEPHEN accounts for the largest share on record, with about $19.01M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.