Teradyne, Inc. (TER) Insider Trading
Over the last 3 months, TER insiders made 0 open-market buys and 8 sales, a net sale of -$6.4M (SEC Form 4). Over the last 6 months, 908 institutions increased and 883 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
8
Net (3m)
-$6.4M
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price -4.5%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 18, 2026 | MATZ MARILYNdirector | Sell | 1,200 | $425.00 |
| Aug 18, 2026 | Smith Gregory Stephendirector, officer: President and CEO | Sell | 4,000 | $425.00 |
| Aug 4, 2026 | JOHNSON MERCEDESdirector | Sell | 166 | $358.15 |
| Jul 16, 2026 | MATZ MARILYNdirector | Sell | 1,200 | $356.31 |
| Jul 16, 2026 | Smith Gregory Stephendirector, officer: President and CEO | Sell | 4,000 | $356.31 |
| Jul 2, 2026 | JOHNSON MERCEDESdirector | Sell | 167 | $460.00 |
| Jun 29, 2026 | Henry Andrew Chisholmdirector | Grant | 52 | — |
| Jun 29, 2026 | TUFANO PAUL Jdirector | Grant | 116 | — |
| Jun 29, 2026 | Herweck Peterdirector | Grant | 63 | — |
| Jun 16, 2026 | Smith Gregory Stephendirector, officer: President and CEO | Sell | 4,000 | $423.03 |
| Jun 16, 2026 | MATZ MARILYNdirector | Sell | 1,200 | $423.03 |
| May 26, 2026 | Poulin Shannon Johnofficer: President, Semiconductor Test | Tax | 1,531 | $345.98 |
| May 26, 2026 | MATZ MARILYNdirector | Sell | 400 | $350.00 |
| May 26, 2026 | Poulin Shannon Johnofficer: President, Semiconductor Test | Sell | 656 | $355.00 |
| May 26, 2026 | Poulin Shannon Johnofficer: President, Semiconductor Test | Sell | 1,008 | $345.37 |
| May 26, 2026 | Poulin Shannon Johnofficer: President, Semiconductor Test | Option | 2,843 | $82.61 |
| May 19, 2026 | Smith Gregory Stephendirector, officer: President and CEO | Option | 4,597 | $72.10 |
| May 19, 2026 | MATZ MARILYNdirector | Sell | 800 | $338.98 |
| May 19, 2026 | Smith Gregory Stephendirector, officer: President and CEO | Sell | 8,597 | $338.98 |
| May 12, 2026 | TUFANO PAUL Jdirector | Grant | 668 | — |
| May 12, 2026 | MATZ MARILYNdirector | Grant | 668 | — |
| May 12, 2026 | JOHNSON MERCEDESdirector | Grant | 668 | — |
| May 12, 2026 | MADDOCK ERNEST Edirector | Grant | 668 | — |
| May 12, 2026 | van Kralingen Bridget Adirector | Grant | 668 | — |
| May 12, 2026 | Henry Andrew Chisholmdirector | Grant | 668 | — |
| May 12, 2026 | Sayiner Necipdirector | Grant | 668 | — |
| May 12, 2026 | Herweck Peterdirector | Grant | 668 | — |
| May 11, 2026 | Driscoll Ryanofficer: VP, General Counsel, Secretary | Sell | 680 | $377.60 |
| Apr 9, 2026 | Mills Reganofficer: President, Product Test | Sell | 16 | $342.17 |
| Apr 7, 2026 | JOHNSON MERCEDESdirector | Sell | 625 | $312.20 |
Source: TER SEC Form 4 filings, latest Aug 18, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their TER positions over the last 6 months (SEC Form 13F).
Increased
908
New positions
639
Reduced
883
Sold out
126
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 19.4M | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 16.3M | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 10.2M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 10.2M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 8.6M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 8.6M | May 8, 2026 |
| STATE STREET CORP | Increased | 7.3M | Aug 7, 2026 |
| STATE STREET CORP | Reduced | 7.0M | May 15, 2026 |
| Invesco Ltd. | Increased | 6.7M | Aug 14, 2026 |
| JPMORGAN CHASE & CO | Increased | 5.6M | Aug 12, 2026 |
| JANE STREET GROUP, LLC | Increased | 5.2M | Aug 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 4.6M | Aug 12, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 4.4M | May 15, 2026 |
| FMR LLC | Increased | 4.1M | Aug 13, 2026 |
| FMR LLC | Increased | 3.6M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.