Data spanning the past 90 days through January 16, 2026 reveals that Teradyne's three principal insider shareholders consist of Ceo Mark E Jagiela (208.60K shares), President And Ceo Gregory Stephen Smith (93.41K shares), Director Paul J Tufano (64.86K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Mark E Jagiela | Ceo | 208,600 | 31 Jan, 2023 |
| Gregory Stephen Smith | President And Ceo | 93,409 | 15 Dec, 2025 |
| Paul J Tufano | 64,861 | 19 Dec, 2025 | |
| Timothy E Guertin | 62,729 | 19 Mar, 2024 | |
| Brad Robbins | President And Litepoint Corp. | 52,772 | 31 Jan, 2024 |
| Edwin J Gillis | 43,921 | 21 Mar, 2023 | |
| Walter G. Vahey | Exec. Vp And Corp. Development | 41,570 | 01 Feb, 2022 |
| Sanjay Mehta | Vp And Chief Financial Officer | 36,576 | 05 Feb, 2025 |
| Richard John Burns | President And Semiconductor Test | 25,191 | 05 Feb, 2025 |
| Michael A Bradley | 24,815 | 17 Dec, 2021 | |
| Charles Jeffrey Gray | Vp And General Counsel And Secretary | 24,643 | 31 Jan, 2024 |
| Marilyn Matz | 19,173 | 13 May, 2025 | |
| Ujjwal Kumar | President And Teradyne Robotics | 16,369 | 05 Aug, 2025 |
| Peter Herweck | 15,369 | 19 Dec, 2025 | |
| John Francis Wood | President And System Test Group | 14,137 | 04 Feb, 2025 |
| Michelle L. Turner | Chief Financial Officer | 11,260 | 05 Nov, 2025 |
| Ernest E Maddock | 9,595 | 19 Dec, 2025 | |
| Mercedes Johnson | 8,238 | 06 Jan, 2026 | |
| Ryan Driscoll | Vp And General Counsel And Secretary | 7,007 | 05 Feb, 2025 |
| Kralingen Bridget A Van | 5,556 | 13 May, 2025 | |
| Ford Tamer | 5,359 | 16 May, 2023 | |
| John Lukez | President And Litepoint Corp. | 4,185 | 04 Feb, 2025 |
| Necip Sayiner | 2,132 | 03 Jul, 2025 | |
| Andrew Chisholm Henry | 2,132 | 03 Jul, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 05 Jan, 2026 | Mercedes Johnson | Common Stock | D | 625 | $211.85 | 8,238 | D | S |
| 17 Dec, 2025 | Paul J Tufano | Common Stock | A | 36 | $0.00 | 64,861 | D | J |
| 17 Dec, 2025 | Paul J Tufano | Common Stock | A | 256 | $0.00 | 64,825 | D | A |
| 17 Dec, 2025 | Paul J Tufano | - | - | 64,861 | D | |||
| 17 Dec, 2025 | Paul J Tufano | - | - | 64,825 | D | |||
| 17 Dec, 2025 | Ernest E Maddock | Common Stock | A | 2 | $0.00 | 9,595 | D | J |
| 17 Dec, 2025 | Peter Herweck | Common Stock | A | 7 | $0.00 | 15,369 | D | J |
| 17 Dec, 2025 | Peter Herweck | Common Stock | A | 148 | $0.00 | 15,362 | D | A |
| 12 Dec, 2025 | Gregory Stephen Smith | Common Stock | D | 1,108 | $201.31 | 93,409 | D | S |
| 05 Dec, 2025 | Mercedes Johnson | Common Stock | D | 625 | $200.00 | 8,863 | D | S |
| 12 Nov, 2025 | Gregory Stephen Smith | Common Stock | D | 1,108 | $180.20 | 94,517 | D | S |
| 05 Nov, 2025 | Mercedes Johnson | Common Stock | D | 625 | $177.05 | 9,488 | D | S |
| 05 Nov, 2025 | Gregory Stephen Smith | Common Stock | A | 2,072 | $36.75 | 96,849 | D | M |
| 05 Nov, 2025 | Gregory Stephen Smith | - | - | 95,625 | D | |||
| 05 Nov, 2025 | Gregory Stephen Smith | Common Stock | D | 1,224 | $177.05 | 95,625 | D | F |
| 03 Nov, 2025 | Michelle L. Turner | Common Stock | A | 11,144 | $0.00 | 11,260 | D | A |
| 03 Nov, 2025 | Michelle L. Turner | - | - | 11,260 | D | |||
| 10 Oct, 2025 | Gregory Stephen Smith | - | - | 94,777 | D | |||
| 10 Oct, 2025 | Gregory Stephen Smith | Common Stock | D | 1,108 | $145.24 | 94,777 | D | S |
| 06 Oct, 2025 | Mercedes Johnson | Common Stock | D | 625 | $147.90 | 10,113 | D | S |