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Teradyne, Inc.

TechnologyS&P 500NASDAQ 100

Teradyne, Inc. insider trading

Teradyne, Inc. files with the SEC as a Instruments For Meas & Testing of Electricity & Elec Signals company headquartered in North Reading, MA. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.

From SEC filings

Recent TER insider transactions

4 insiders traded TER on the open market between May 15, 2026 and Sep 17, 2026 — 18 sales worth $12.2M, of which every one was pre-scheduled under a 10b5-1 plan.

Bought
—
Sold
$12.2M

18 of 18 on a 10b5-1 plan

Net
−$12.2M
Insiders
4

Open-market purchases (code P) and sales (code S) from Teradyne, Inc.'s own SEC Form 4 filings. Grants and option exercises are excluded — they are compensation, not decisions. Share counts are derived from the reported value and price. Verify any figure against the original filing before acting on it; this is monitoring, not advice.

Filing history last read from EDGAR on Sep 21, 2026. The live dashboard shows new filings the moment they clear.

Every TER Form 4 on SEC.gov

SEC Form 4 data, Q3 2024 to Q2 2026

TER insider trading by quarter

Between Jul 01, 2024 and Jun 30, 2026, 8 insiders traded TER on the open market: 0 purchases and 56 sales worth $13.7M, 55 of the sales pre-scheduled under a 10b5-1 plan. In the last four quarters alone: 0 purchases and 29 sales ($8.9M), by 6 insiders.

QuarterBoughtSold
Q2 2026—−$6.7M12 sales · all on a plan
Q1 2026—−$748.6K4 sales · 3 on a plan
Q4 2025—−$911.7K6 sales · all on a plan
Q3 2025—−$590.6K7 sales · all on a plan
Q2 2025——
Q1 2025—−$2.1M15 sales · all on a plan
Q4 2024—−$1.2M7 sales · all on a plan
Q3 2024—−$1.5M5 sales · all on a plan
Largest sale
−$2.9M of TER by Smith Gregory Stephen (President and CEO · Director) on May 15, 2026, under a 10b5-1 plan.

Open-market transactions through Jun 30, 2026most recent first

  • Driscoll Ryan10b5-1

    VP, General Counsel, Secretary

    −$256.8K

    May 07, 2026

    680 sh · $377.60

  • Mills Regan10b5-1

    President, Product Test

    −$5.5K

    Apr 08, 2026

    16 sh · $342.17

  • Johnson Mercedes10b5-1

    Director

    −$195.1K

    Apr 06, 2026

    625 sh · $312.20

  • Mills Regan10b5-1

    President, Product Test

    −$73.3K

    Apr 02, 2026

    252 sh · $290.88

  • Johnson Mercedes10b5-1

    Director

    −$187K

    Mar 05, 2026

    625 sh · $299.20

  • Mills Regan

    President, Product Test

    −$262.3K

    Feb 25, 2026

    788 sh · $332.87

  • Johnson Mercedes10b5-1

    Director

    −$166.9K

    Feb 05, 2026

    625 sh · $266.98

  • Johnson Mercedes10b5-1

    Director

    −$132.4K

    Jan 05, 2026

    625 sh · $211.85

  • Smith Gregory Stephen10b5-1

    President and CEO · Director

    −$223.1K

    Dec 12, 2025

    1,108 sh · $201.31

  • Johnson Mercedes10b5-1

    Director

    −$125K

    Dec 05, 2025

    625 sh · $200.00

  • Smith Gregory Stephen10b5-1

    President and CEO · Director

    −$199.7K

    Nov 12, 2025

    1,108 sh · $180.20

  • Johnson Mercedes10b5-1

    Director

    −$110.7K

    Nov 05, 2025

    625 sh · $177.05

  • Smith Gregory Stephen10b5-1

    President and CEO · Director

    −$160.9K

    Oct 10, 2025

    1,108 sh · $145.24

  • Johnson Mercedes10b5-1

    Director

    −$92.4K

    Oct 06, 2025

    625 sh · $147.90

  • Smith Gregory Stephen10b5-1

    President and CEO · Director

    −$70K

    Sep 22, 2025

    554 sh · $126.39

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

Teradyne, Inc. company record

SEC industry classification
Instruments For Meas & Testing of Electricity & Elec Signals
Headquarters
North Reading, MA
Incorporated in
MA
Listed on
Nasdaq
SEC Central Index Key
0000097210

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Technology sector shown above.

After insiders bought TER

What the stock actually did in the 90 days following each open-market purchase

Don't check TER — let it ping you

Get told the moment an insider moves on TER

Pro watches Teradyne, Inc. for you and sends a Telegram ping within moments of a Form 4 clearing EDGAR — a C-suite open-market buy, a cluster, a 10b5-1 regime break — long before it reaches the press. Add TER to a watchlist, see each mover's benchmark-measured track record and which legendary funds hold it, and read the full filing history instead of the last 72 hours.

Track TER on the live dashboardFilings on SEC.gov

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

How to read TER insider activity

Open-market purchase (code P)
An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
Grants and option exercises (codes A, M)
Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
Cluster buy
Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

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This week on the tape: who actually chose to sellThe weekly split of scheduled 10b5-1 selling vs deliberate sales, with the deciders named.

Questions

Are TER insiders buying or selling?
Between May 15, 2026 and Sep 17, 2026, 4 Teradyne, Inc. insiders made no open-market purchases and 18 sales worth $12.2M, a net sale of $12.2M. 18 of the sales were pre-scheduled under a Rule 10b5-1 plan.
How much TER stock have insiders bought and sold in the last two years?
Between Jul 01, 2024 and Jun 30, 2026, 8 Teradyne, Inc. insiders made no open-market purchases and 56 sales worth $13.7M. 55 of the sales were pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: no purchases and 29 sales ($8.9M). The largest sale was Smith Gregory Stephen selling $2.9M on May 15, 2026.
What was the largest recent TER insider trade?
Smith Gregory Stephen (President and CEO · Director) sold $2.9M of TER stock on May 15, 2026 at about $338.98 a share, under a pre-scheduled 10b5-1 plan.
When did an insider last buy TER shares?
No open-market purchase by a Teradyne, Inc. insider appears in the filings from May 15, 2026 to Sep 17, 2026 — every recorded open-market transaction in that period was a sale.
Where does TER insider trading data come from?
From the Form 4 filings Teradyne, Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.

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