Teradyne Inc.
Last updated September 27, 2026
Organization details
- Legal name
- Teradyne Inc.
- Ownership
- Public
- Status
- Active
- SIC code
- 3825 — Instruments For Meas & Testing of Electricity & Elec Signals
- Jurisdiction of incorporation
- Massachusetts
- Headquarters city
- North Reading
- Headquarters state / province
- Massachusetts
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- TER
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0000097210
- EIN
- 04-2272148
Board of directors
-
Andrew Chisholm Henry · DirectorSince 2025
-
Edwin J. Gillis · DirectorSince 2023
-
Ernest E. Maddock · DirectorSince 2023
-
Ford Tamer · DirectorSince 2023
-
Gregory Stephen Smith · Director · President and CEOSince 2024
-
Kralingen Bridget A. Van · DirectorSince 2024
-
Marilyn Matz · DirectorSince 2023
-
Mark E. Jagiela · Director · CEOSince 2023
-
Mercedes Johnson · DirectorSince 2023
- Since 2025
-
Paul J. Tufano · DirectorSince 2023
-
Peter Herweck · DirectorSince 2023
-
Timothy E. Guertin · DirectorSince 2023
Chief executives
Gregory Stephen Smith
· President and CEO
Dates unknown
Mark E. Jagiela
· CEO
Dates unknown
Director election results
Annual meeting of May 8, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
92.8%
-
96.3%
-
96.8%
-
98.0%
-
98.9%
-
99.7%
-
100.0%
Board connections
8 of this board's directors also sit on 16 other boards.
- via Mercedes Johnson
- via Ernest E. Maddock
- via Necip Sayiner
- via Paul J. Tufano
- via Ford Tamer
- via Ford Tamer
- via Ernest E. Maddock
- via Necip Sayiner
- via Necip Sayiner
- via Necip Sayiner
- via Kralingen Bridget A. Van
- via Edwin J. Gillis
- via Mercedes Johnson
- via Kralingen Bridget A. Van
- via Ernest E. Maddock
- via Timothy E. Guertin
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $0
- 0 purchases by 0 insiders
- Sold, last 12 months
- $14,376,993
- 32 sales by 6 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 17, 2026 | Marilyn Matz Director | Open-market sale | −400 | $351.11 | $140,444 |
| Sep 15, 2026 | Marilyn Matz Director | Open-market sale | −800 | $337.83 | $270,264 |
| Sep 15, 2026 | Gregory Stephen Smith Director, Officer (President and CEO) | Open-market sale | −4,000 | $337.83 | $1,351,320 |
| Sep 1, 2026 | Mercedes Johnson Director | Open-market sale | −167 | $341.30 | $56,997 |
| Aug 17, 2026 | Marilyn Matz Director | Open-market sale | −1,200 | $425.00 | $510,000 |
| Aug 17, 2026 | Gregory Stephen Smith Director, Officer (President and CEO) | Open-market sale | −4,000 | $425.00 | $1,700,000 |
| Aug 3, 2026 | Mercedes Johnson Director | Open-market sale | −166 | $358.15 | $59,453 |
| Jul 15, 2026 | Marilyn Matz Director | Open-market sale | −1,200 | $356.31 | $427,572 |
| Jul 15, 2026 | Gregory Stephen Smith Director, Officer (President and CEO) | Open-market sale | −4,000 | $356.31 | $1,425,240 |
| Jul 1, 2026 | Mercedes Johnson Director | Open-market sale | −167 | $460.00 | $76,820 |
| Jun 25, 2026 | Paul J. Tufano Director | Grant or award | +116 | — | — |
| Jun 25, 2026 | Andrew Chisholm Henry Director | Grant or award | +52 | — | — |
| Jun 25, 2026 | Peter Herweck Director | Grant or award | +63 | — | — |
| Jun 15, 2026 | Marilyn Matz Director | Open-market sale | −1,200 | $423.03 | $507,636 |
| Jun 15, 2026 | Gregory Stephen Smith Director, Officer (President and CEO) | Open-market sale | −4,000 | $423.03 | $1,692,120 |
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