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Are Teradyne Insiders Buying or Selling?
Teradyne (TER) has had 6 insider transactions in the past 90 days, all sells. The most recent was MERCEDES JOHNSON, who sold 166 shares at $358.15 on August 3, 2026.
Insider trading patterns can signal confidence or concern from the people who know the company best. AltIndex tracks insider transactions as one of 25+ alternative data signals in the TER AI Score. For government officials trading this stock, see TER congressional trading.
Who’s Trading Teradyne Stock?
| Insider | Activity | Trades | Last Trade |
|---|---|---|---|
| Smith Gregory Stephen | Sold $8.5M | 14 | Jul 15, 2026 |
| MERCEDES JOHNSON | Sold $2M | 19 | Aug 3, 2026 |
| MARILYN MATZ | Sold $1.3M | 4 | Jul 15, 2026 |
| Sanjay Mehta | Sold $1.1M | 4 | Feb 4, 2025 |
| Poulin Shannon John | Sold $580,000 | 2 | May 22, 2026 |
| Burns Richard John | Sold $460,000 | 6 | Feb 4, 2025 |
Recent Teradyne Insider Transactions
| Insider | Transaction Date | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| MERCEDES JOHNSON | Aug 3, 2026 | Sell | 166 | $358.15 | $59,000 |
| Smith Gregory Stephen | Jul 15, 2026 | Sell | 4,000 | $356.31 | $1.4M |
| MARILYN MATZ | Jul 15, 2026 | Sell | 1,200 | $356.31 | $430,000 |
| MERCEDES JOHNSON | Jul 1, 2026 | Sell | 167 | $460 | $77,000 |
| MARILYN MATZ | Jun 15, 2026 | Sell | 1,200 | $423.03 | $510,000 |
| Smith Gregory Stephen | Jun 15, 2026 | Sell | 4,000 | $423.03 | $1.7M |
| MERCEDES JOHNSON | Jun 2, 2026 | Sell | 167 | $369.74 | $62,000 |
| Poulin Shannon John | May 22, 2026 | Sell | 656 | $355 | $230,000 |
| Poulin Shannon John | May 21, 2026 | Sell | 1,008 | $345.37 | $350,000 |
| MARILYN MATZ | May 21, 2026 | Sell | 400 | $350 | $140,000 |
| Smith Gregory Stephen | May 15, 2026 | Sell | 8,597 | $338.98 | $2.9M |
| MARILYN MATZ | May 15, 2026 | Sell | 800 | $338.98 | $270,000 |
| Ryan Driscoll | May 7, 2026 | Sell | 680 | $377.6 | $260,000 |
| Regan Mills | Apr 8, 2026 | Sell | 16 | $342.17 | $5,500 |
| MERCEDES JOHNSON | Apr 6, 2026 | Sell | 625 | $312.2 | $200,000 |
| Regan Mills | Apr 2, 2026 | Sell | 252 | $290.88 | $73,000 |
| MERCEDES JOHNSON | Mar 5, 2026 | Sell | 625 | $299.2 | $190,000 |
| Regan Mills | Feb 25, 2026 | Sell | 788 | $332.87 | $260,000 |
| MERCEDES JOHNSON | Feb 5, 2026 | Sell | 625 | $266.98 | $170,000 |
| MERCEDES JOHNSON | Jan 5, 2026 | Sell | 625 | $211.85 | $130,000 |
| Smith Gregory Stephen | Dec 12, 2025 | Sell | 1,108 | $201.31 | $220,000 |
| MERCEDES JOHNSON | Dec 5, 2025 | Sell | 625 | $200 | $130,000 |
| Smith Gregory Stephen | Nov 12, 2025 | Sell | 1,108 | $180.2 | $200,000 |
| MERCEDES JOHNSON | Nov 5, 2025 | Sell | 625 | $177.05 | $110,000 |
| Smith Gregory Stephen | Oct 10, 2025 | Sell | 1,108 | $145.24 | $160,000 |
| MERCEDES JOHNSON | Oct 6, 2025 | Sell | 625 | $147.9 | $92,000 |
| Smith Gregory Stephen | Sep 22, 2025 | Sell | 554 | $126.39 | $70,000 |
| Smith Gregory Stephen | Sep 12, 2025 | Sell | 554 | $115 | $64,000 |
| MERCEDES JOHNSON | Sep 5, 2025 | Sell | 625 | $120.06 | $75,000 |
| Smith Gregory Stephen | Aug 12, 2025 | Sell | 554 | $106 | $59,000 |
| MERCEDES JOHNSON | Aug 5, 2025 | Sell | 625 | $106 | $66,000 |
| MERCEDES JOHNSON | Jul 30, 2025 | Sell | 1,875 | $105.73 | $200,000 |
| Smith Gregory Stephen | Jul 30, 2025 | Sell | 554 | $105.73 | $59,000 |
| MERCEDES JOHNSON | Mar 3, 2025 | Sell | 625 | $110.96 | $69,000 |
| Sanjay Mehta | Feb 4, 2025 | Sell | 1,384 | $111.49 | $150,000 |
| Burns Richard John | Feb 4, 2025 | Sell | 445 | $111.49 | $50,000 |
| Ryan Driscoll | Feb 4, 2025 | Sell | 216 | $111.49 | $24,000 |
| MERCEDES JOHNSON | Feb 3, 2025 | Sell | 625 | $112.58 | $70,000 |
| Sanjay Mehta | Jan 30, 2025 | Sell | 614 | $102 | $63,000 |
| Ryan Driscoll | Jan 30, 2025 | Sell | 437 | $102 | $45,000 |
| Sanjay Mehta | Jan 29, 2025 | Sell | 5,338 | $122.9 | $660,000 |
| Burns Richard John | Jan 29, 2025 | Sell | 1,477 | $122.9 | $180,000 |
| Ryan Driscoll | Jan 29, 2025 | Sell | 76 | $122.9 | $9,300 |
| Sanjay Mehta | Jan 28, 2025 | Sell | 1,789 | $120.51 | $220,000 |
| Burns Richard John | Jan 28, 2025 | Sell | 407 | $120.51 | $49,000 |
| Burns Richard John | Jan 28, 2025 | Sell | 407 | $120.51 | $49,000 |
| Ryan Driscoll | Jan 28, 2025 | Sell | 107 | $120.51 | $13,000 |
| Smith Gregory Stephen | Jan 3, 2025 | Sell | 3,080 | $130 | $400,000 |
| MERCEDES JOHNSON | Jan 2, 2025 | Sell | 625 | $126.76 | $79,000 |
| Smith Gregory Stephen | Dec 16, 2024 | Sell | 3,080 | $130 | $400,000 |
| MERCEDES JOHNSON | Dec 2, 2024 | Sell | 625 | $110.04 | $69,000 |
| MERCEDES JOHNSON | Nov 7, 2024 | Sell | 625 | $111.42 | $70,000 |
| Burns Richard John | Oct 2, 2024 | Sell | 191 | $129.68 | $25,000 |
| Smith Gregory Stephen | Oct 1, 2024 | Sell | 3,080 | $132.8 | $410,000 |
| Burns Richard John | Oct 1, 2024 | Sell | 789 | $132.8 | $100,000 |
| MERCEDES JOHNSON | Oct 1, 2024 | Sell | 625 | $132.8 | $83,000 |
| Smith Gregory Stephen | Sep 11, 2024 | Sell | 3,080 | $130 | $400,000 |
Frequently Asked Questions: Teradyne Insider Trading
In the past 90 days, Teradyne insiders have made 0 buys and 6 sells. The net selling may indicate insiders are taking profits or reducing exposure.
The most recent sale was by MERCEDES JOHNSON who sold 166 shares on August 3, 2026. View all transactions in the table on this page.
Insider buying is generally a stronger signal than insider selling, since insiders may sell for personal reasons (diversification, taxes) but typically buy only when they believe the stock is undervalued. AltIndex uses insider transaction patterns alongside 25+ other signals in the AI Score.
Smith Gregory Stephen has sold the most TER stock in the last 2 years, with a total value of $8.5M.
The total value of insider transactions for Teradyne in the last 2 years is negative, amounting to -$15M. This suggests that insiders have predominantly sold shares, which could reflect various personal or financial considerations rather than a straightforward outlook on the company's future performance.
