TER
Teradyne insider trading
Information Technology · Heavy selling
Close · Oct 5, 2026
$444.53
+201.2% over 12 months
Share price and insider trades
TER closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$14.4M
Insiders buying0
Insiders selling6
Valuation, profit and volume
P/E (trailing)61.1Sector median 32.1
Market value$69.50BSemiconductor Equipment & Materials
Profit margin25.8%Revenue growth +103.9%
Volume vs. 50-day0.7×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 Teradyne insiders reported open-market purchases totaling $0, while 6 insiders reported sales totaling $14.4M. 33 of 33 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales. 57 grants, option exercises and tax withholdings are not shown.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Oct 2SEC | Mercedes JohnsonDirector | Sell Plan | 167 | $402.90 | $67K | +10.3% | — |
| Sep 18SEC | Marilyn MatzDirector | Sell Plan | 400 | $351.11 | $140K | +26.6% | — |
| Sep 16SEC | Gregory Stephen SmithCEO, President | Sell Plan | 4,000 | $337.83 | $1.4M | +31.6% | — |
| Sep 16SEC | Marilyn MatzDirector | Sell Plan | 800 | $337.83 | $270K | +31.6% | — |
| Sep 2SEC | Mercedes JohnsonDirector | Sell Plan | 167 | $341.30 | $57K | +30.2% | — |
| Aug 18SEC | Gregory Stephen SmithCEO, President | Sell Plan | 4,000 | $425.00 | $1.7M | +4.6% | — |
| Aug 18SEC | Marilyn MatzDirector | Sell Plan | 1,200 | $425.00 | $510K | +4.6% | — |
| Aug 4SEC | Mercedes JohnsonDirector | Sell Plan | 166 | $358.15 | $59K | +24.1% | — |
| Jul 16SEC | Gregory Stephen SmithCEO, President | Sell Plan | 4,000 | $356.31 | $1.4M | +24.8% | — |
| Jul 16SEC | Marilyn MatzDirector | Sell Plan | 1,200 | $356.31 | $428K | +24.8% | — |
| Jul 2SEC | Mercedes JohnsonDirector | Sell Plan | 167 | $460.00 | $77K | -3.4% | — |
| Jun 16SEC | Gregory Stephen SmithCEO, President | Sell Plan | 4,000 | $423.03 | $1.7M | +5.1% | — |
| Jun 16SEC | Marilyn MatzDirector | Sell Plan | 1,200 | $423.03 | $508K | +5.1% | — |
| Jun 3SEC | Mercedes JohnsonDirector | Sell Plan | 167 | $369.74 | $62K | +20.2% | — |
| May 26SEC | Shannon John PoulinPresident | Sell Plan | 1,008 | $345.37 | $348K | +28.7% | — |
| May 26SEC | Shannon John PoulinPresident | Sell Plan | 656 | $355.00 | $233K | +25.2% | — |
| May 26SEC | Marilyn MatzDirector | Sell Plan | 400 | $350.00 | $140K | +27.0% | — |
| May 19SEC | Gregory Stephen SmithCEO, President | Sell Plan | 8,597 | $338.98 | $2.9M | +31.1% | — |
| May 19SEC | Marilyn MatzDirector | Sell Plan | 800 | $338.98 | $271K | +31.1% | — |
| May 11SEC | Ryan DriscollGeneral Counsel | Sell Plan | 680 | $377.60 | $257K | +17.7% | — |
| Apr 9SEC | Regan MillsPresident | Sell Plan | 16 | $342.17 | $5K | +29.9% | — |
| Apr 7SEC | Mercedes JohnsonDirector | Sell Plan | 625 | $312.20 | $195K | +42.4% | — |
| Apr 3SEC | Regan MillsPresident | Sell Plan | 252 | $290.88 | $73K | +52.8% | — |
| Mar 6SEC | Mercedes JohnsonDirector | Sell Plan | 625 | $299.20 | $187K | +48.6% | — |
| Feb 27SEC | Regan MillsPresident | Sell Plan | 788 | $332.87 | $262K | +33.5% | — |
| Feb 6SEC | Mercedes JohnsonDirector | Sell Plan | 625 | $266.98 | $167K | +66.5% | — |
| Jan 6SEC | Mercedes JohnsonDirector | Sell Plan | 625 | $211.85 | $132K | +109.8% | — |
| Dec 15SEC | Gregory Stephen SmithCEO, President | Sell Plan | 1,108 | $201.31 | $223K | +120.8% | — |
| Dec 8SEC | Mercedes JohnsonDirector | Sell Plan | 625 | $200.00 | $125K | +122.3% | — |
| Nov 14SEC | Gregory Stephen SmithCEO, President | Sell Plan | 1,108 | $180.20 | $200K | +146.7% | — |
| Nov 7SEC | Mercedes JohnsonDirector | Sell Plan | 625 | $177.05 | $111K | +151.1% | — |
| Oct 15SEC | Gregory Stephen SmithCEO, President | Sell Plan | 1,108 | $145.24 | $161K | +206.1% | — |
| Oct 8SEC | Mercedes JohnsonDirector | Sell Plan | 625 | $147.90 | $92K | +200.6% | — |
Insiders at Teradyne
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Gregory Stephen SmithCEO, President | — | $9.7M | Sep 16, 2026 | — |
| Marilyn MatzDirector | — | $2.3M | Sep 18, 2026 | — |
| Mercedes JohnsonDirector | — | $1.3M | Oct 2, 2026 | — |
| Shannon John PoulinPresident | — | $581K | May 26, 2026 | — |
| Regan MillsPresident | — | $341K | Apr 9, 2026 | — |
| Ryan DriscollGeneral Counsel | — | $257K | May 11, 2026 | — |
| Andrew Chisholm HenryDirector | — | — | Sep 28, 2026 | — |
| Ernest E MaddockDirector | — | — | Sep 28, 2026 | — |
| Paul J TufanoDirector | — | — | Sep 28, 2026 | — |
| Peter HerweckDirector | — | — | Sep 28, 2026 | — |
| Jean Pierre HathoutPresident | — | — | Jun 3, 2026 | — |
| Necip SayinerDirector | — | — | May 12, 2026 | — |
| Kralingen Bridget A VanDirector | — | — | May 12, 2026 | — |
| Michelle L. TurnerCFO | — | — | Nov 5, 2025 | — |
Insider activity at other Information Technology companies
Same sector, ranked by insider buying in the last 90 days.
Common questions about TER insiders
Are Teradyne insiders buying TER stock?
In the past 12 months, 0 insiders reported open-market purchases of TER worth $0.
Are Teradyne insiders selling TER stock?
6 insiders reported sales worth $14.4M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.