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Teradyne TER

Teradyne is the 238th largest S&P 500 company by market cap, worth $48.3 billion. 9 directors have filed with the SEC in the last 12 months (who counts), 1 of them an executive. 5 other officers are on file. At 30 Jun 2026, Vanguard was its largest institutional holder, with 13.1% of the company.

CEO
Gregory Stephen Smith
Sector
Information Technology
Sub-industry
Semiconductor Materials & Equipment
Headquarters
North Reading, Massachusetts
Founded
1960
More
Wikipedia
Market cap
$48.3B
238th largest, 23 Oct 2026 close
Revenue
$3.2B
Fiscal year 2025
Price to sales
15.1
Market cap over revenue
Employees
6,600
10-K, 31 Dec 2025
Market cap per employee
$7.3M
Market cap over employees
Connections
4
S&P 500 companies sharing a director or officer

Largest institutional holders

Each fund group's share of Teradyne. Where a company has several share classes, the share is of its total value.

13F filings for the quarter to 30 Jun 2026

These five hold 38.0% of Teradyne.

Source: SEC Form 13F data sets, SEC XBRL shares outstanding 路 All holders

Board and officers

3 people here also hold roles at other S&P 500 companies.

Roles filed up to 30 Sep 2026

NameTitle
Directors (9)
Gregory Stephen SmithPresident and CEOPresident and CEO
Andrew Chisholm HenryDirectorDirector
Peter HerweckDirectorDirector
Mercedes JohnsonDirectorAlso at Analog Devices and SynopsysDirector
Bridget A. van KralingenDirectorAlso at The Travelers CompaniesDirector
Ernest E. MaddockDirectorDirector
Marilyn MatzDirectorDirector
Necip SayinerDirectorAlso at SandiskDirector
Paul J. TufanoDirectorDirector
Officers (5)
Michelle L. TurnerChief Financial OfficerLast filed 5 Nov 2025Chief Financial Officer
Ryan DriscollVP, General Counsel, SecretaryLast filed 11 May 2026VP, General Counsel, Secretary
Jean Pierre HathoutPresident, Teradyne RoboticsLast filed 3 Jun 2026President, Teradyne Robotics
Regan MillsPresident, Product TestLast filed 9 Apr 2026President, Product Test
Shannon John PoulinPresident, Semiconductor TestLast filed 26 May 2026President, Semiconductor Test

Source: SEC insider filings (Forms 3, 4 and 5), Teradyne's Form 4 filings 路 All directors and officers

Companies that share people with Teradyne

Each person's title here, then at the other company.

  • Analog Devices ADI
    • Mercedes Johnson: Director here, Director there
  • Sandisk SNDK
    • Necip Sayiner: Director here, Director there
  • Synopsys SNPS
    • Mercedes Johnson: Director here, Director there
  • The Travelers Companies TRV
    • Bridget A. van Kralingen: Director here, Director there

Source: SEC insider filings 路 See the whole network

Teradyne's market cap since December 2008

Weekly, up to 23 Oct 2026

Show equal percentage changes as equal steps.
201020122014201620182020202220242026$48.3B

Source: Yahoo Finance closing prices, SEC XBRL shares outstanding

Workforce

Headcount at 31 Dec 2025

Employees
6,600
As of December 31, 2025, we employed approximately 6,600 employees, of whom approximately 2,200 were employed in the United States.
Teradyne Form 10-K

Source: Teradyne Form 10-K

Insider trades

Open-market buys and sales by directors and officers. Grants, option exercises and shares withheld for tax are left out.

Trades from 30 Sep 2025 to 30 Sep 2026

Directors and officers sold $14.4 million of stock in 32 sales and made no open-market purchases in the 12 months to 30 Sep 2026.

DatePersonTitleTypeSharesValue
17 Sep 2026SaleMarilyn MatzDirectorDirectorSale400$140K
15 Sep 2026SaleGregory Stephen SmithPresident and CEOPresident and CEOSale4,000$1.4M
15 Sep 2026SaleMarilyn MatzDirectorDirectorSale800$270K
1 Sep 2026SaleMercedes JohnsonDirectorDirectorSale167$57K
17 Aug 2026SaleGregory Stephen SmithPresident and CEOPresident and CEOSale4,000$1.7M
17 Aug 2026SaleMarilyn MatzDirectorDirectorSale1,200$510K
3 Aug 2026SaleMercedes JohnsonDirectorDirectorSale166$59K
15 Jul 2026SaleGregory Stephen SmithPresident and CEOPresident and CEOSale4,000$1.4M
15 Jul 2026SaleMarilyn MatzDirectorDirectorSale1,200$428K
1 Jul 2026SaleMercedes JohnsonDirectorDirectorSale167$77K

Showing 10 of 32 trades

Source: SEC insider transactions data sets, Teradyne's Form 4 filings

Trades by members of Congress and officials

Trades members of Congress and senior executive branch officials disclosed, including their families'. Amounts are filed as ranges.

Trades from 20 Oct 2023 to 20 Oct 2026

7 people disclosed 9 purchases and 12 sales of Teradyne stock since October 2023.

DateMember or officialTypeAmount
17 Jul 2026Donald J Trump (President)President 路 SoldSale$1,001 to $15,000$1K to $15K
18 May 2026Donald J Trump (President)President 路 SoldSale$50,001 to $100,000$50K to $100K
1 May 2026Rohit Khanna (House, D-CA)House, D-CA 路 BoughtPurchase$1,001 to $15,000$1K to $15K
29 Apr 2026Michael T. McCaul (House, R-TX)House, R-TX 路 BoughtPurchase$50,001 to $100,000$50K to $100K
28 Apr 2026Donald J Trump (President)President 路 SoldSale$1,001 to $15,000$1K to $15K
15 Apr 2026Donald J Trump (President)President 路 BoughtPurchase$1,001 to $15,000$1K to $15K
9 Apr 2026Donald J Trump (President)President 路 SoldSale$100,001 to $250,000$100K to $250K
27 Mar 2026Alan Armstrong (Senate, R-OK)Senate, R-OK 路 BoughtPurchase$1,001 to $15,000$1K to $15K
31 Oct 2025Lisa McClain (House, R-MI)House, R-MI 路 SoldSale$1,001 to $15,000$1K to $15K
30 Oct 2025Lisa McClain (House, R-MI)House, R-MI 路 SoldSale$1,001 to $15,000$1K to $15K

Showing 10 of 21 trades

Source: House, Senate and OGE disclosures via the Congress trading monitor

Not on file: no WARN layoff notices under its own name since October 2023.